CN104242487B - A kind of periphery transmission rake thickener transmission dolly wireless power supply system and control method thereof - Google Patents
A kind of periphery transmission rake thickener transmission dolly wireless power supply system and control method thereof Download PDFInfo
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- CN104242487B CN104242487B CN201410520689.0A CN201410520689A CN104242487B CN 104242487 B CN104242487 B CN 104242487B CN 201410520689 A CN201410520689 A CN 201410520689A CN 104242487 B CN104242487 B CN 104242487B
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Abstract
The present invention discloses a kind of periphery transmission rake thickener transmission dolly wireless power supply system and control method thereof, belongs to radio energy transmission system and method. Wireless power supply system by former limit power device, former limit digital control unit, former limit radio communication module, secondary receive and changing device, secondary digital control unit, secondary radio communication module and transmission dolly form. Wireless power supply system operationally, controls current constant in the magnetic energy for emission coil of former limit by former limit digital control unit, makes secondary pickup voltage constant, and then speed regulation device regulation and control transmission dolly can be made at the uniform velocity to run under different loads. Transmission dolly is wirelessly powered, instead of adopt traditional current collector device to power, avoid because of conduction ring and carbon brush corrosion, abrasion and insulate impaired and cause the generation of the operational trouble such as phase shortage, short circuit, decrease time and the cost of maintenance, repair, it is to increase the safety performance of rake thickener and the economic benefit of coal separating plant.
Description
Technical field
The present invention relates to the wireless power supply system of a kind of coal separating plant sedimentation concentration equipment and control method, specifically a kind of periphery transmission rake thickener transmission dolly wireless power supply system and control method thereof.
Background technology
Along with the popularization and application of ore dressing floatation process technology, cause in concentrate pulp containing abundant residues flotation reagent, such as collecting agent, industrial starch, soda acid thing etc., above-mentioned various waste water usually needs to enter rake thickener and carries out clarifying treatment, is recycled further by water.
Traditional periphery transmission rake thickener is fixed with current collector device in heart cylinder position wherein, the mechanical slip-ring device that namely diameter is bigger, power supply by brush, slip ring and be laid on truss cable supply motor. Owing to rake thickener works under open-air atmosphere, handled black water is all flowed into by the fixing cylinder in center, the black water that splashes makes around running contact place of erection very moist, it is easy to make conduction ring and carbon brush frame corrosion, carbon brush stuck etc. in carbon brush frame, causes carbon brush and ring header loose contact. In addition, rub for a long time between carbon brush and slip ring, it is easy to impaired and generation spark. At weather such as heavy rains, slip ring insulator material is impaired, it is easy to single phase ground fault. Because the three-phase supply of motor is all by current collector device transmission, as long as any one group of carbon brush occurs that contact is good or the situations such as impaired rear appearance short circuit that insulate, electrical accident will be caused, coal separating plant is caused to stop production, and electric equipment maintenance workload is greatly, costly so that coal separating plant's production benefit reduces.
The essence of wireless power transmission technology is a kind of biography energy medium by being present in physical space of general reference, as: high frequency power magnetic field, hertzian wave, microwave, RF radiowave etc., realize by source electrode, electric energy is transferred to the brand-new electrical energy fed pattern by electrode with the form of electrical isolation, it efficiently solves the convenient of power supply, secure accessing problem, solve the plug-in spark that tradition dependence electric conductor directly carries out the power supply direct contact type transmission of electricity pattern of physical contact and brings, long-pending carbon, not easily safeguard, easily produce the problems such as abrasion, the security hidden trouble that particularly electricity consumption exists in particular circumstances. the advantage that wireless power transmission technology has that environment avidity is strong, environmental protection, the contact electric energy transmission mode such as convenient, flexible, safe are incomparable. along with further developing and maturation of this technology, the electrical equipment wireless power mode based on wireless power transmission pattern will become practical, have broad application prospects.
Summary of the invention
It is an object of the invention to be provided a kind of periphery transmission rake thickener transmission dolly wireless power supply system and control method thereof, solve the problems such as electrical accident takes place frequently, poor stability, maintenance load are big, economic benefit is low that the periphery transmission rake thickener adopting current collector device to power at present exists.
The object of the present invention is achieved like this:
Described rake thickener one-piece construction comprises central tube, center post, transmission frame, track, harrow frame, concentration basin, wireless power supply system etc., outside wherein track laying prolongs on concentration basin, around concentration basin one week.
Described wireless power supply system is powered device by former limit, secondary receives and changing device, former limit digital control unit, secondary digital control unit, former limit radio communication module, secondary radio communication module and transmission dolly composition, its limit, Central Plains powers device, former limit digital control unit and former limit radio communication module are arranged on track side, secondary receives and changing device, secondary digital control unit and secondary radio communication module are arranged on transmission dolly, the output of former limit digital control unit controls former limit and powers device, the output control secondary of secondary digital control unit receives and changing device and secondary radio communication module.
Described former limit device of powering is made up of module of powering, former limit magnetic energy for emission coil, coil current detection module, module of wherein powering is connected with former limit magnetic energy for emission coil, power supply module is former limit magnetic energy for emission coil power supply, and coil current detection module is series at former limit magnetic energy for emission coil.
Described secondary receives and changing device picks up coil by secondary magnetic energy, secondary resonance compensation circuit, secondary current rectifying and wave filtering circuit, secondary DC-DC conversion circuit, three-phase inverting circuit, speed regulation device and current of electric detection module composition, wherein secondary magnetic energy pickup coil is connected with secondary current rectifying and wave filtering circuit by secondary resonance compensation circuit, secondary current rectifying and wave filtering circuit, secondary DC-DC conversion circuit, three-phase inverting circuit, speed regulation device, current of electric detection module is linked in sequence successively, current of electric detection module is series at the three-phase input end of motor in transmission dolly.
Described power supply module is made up of AC power, former limit current rectifying and wave filtering circuit, former limit DC-DC conversion circuit, high-frequency inverter circuit, former limit resonance compensation circuit, wherein AC power, former limit current rectifying and wave filtering circuit, former limit DC-DC conversion circuit, high-frequency inverter circuit are linked in sequence successively, and high-frequency inverter circuit is connected by former limit resonance compensation circuit and former limit magnetic energy for emission coil.
The output terminal of described coil current detection module and former limit radio communication module is connected to the input terminus of former limit digital control unit, and the output terminal of former limit digital control unit is connected with former limit DC-DC conversion circuit, high-frequency inverter circuit; The output terminal of current of electric detection module and secondary radio communication module is connected to the input terminus of secondary digital control unit, and the output terminal of secondary digital control unit is connected with secondary DC-DC conversion circuit, three-phase inverting circuit, speed regulation device and secondary radio communication module.
Described former limit magnetic energy for emission coil was laid in orbit, around concentration basin one week; Secondary magnetic energy pickup coil is spiral coil, is wrapped on pickup device; Pickup device can be the one in inverted U-shaped, semi-circular shape, half side's annular, and pickup device is lead the strong material of magnetic energy power, for the magnetic field of former limit magnetic energy for emission coil transmissions provides good loop so that secondary magnetic energy pickup coil can better receive magnetic energy.
Described speed regulation device straight can be handed over for handing over, AC-AC frequency converter or other devices that can be used for regulating and controlling in transmission dolly electric motor starting, stopping and at the uniform velocity running.
The method of supplying power to of described wireless power supply system is: former limit current rectifying and wave filtering circuit is that to be transformed into direct current be that former limit DC-DC conversion circuit is powered for the alternating-current that AC power exported; Former limit DC-DC conversion circuit is be the direct current of required size by the DC power conversion that former limit current rectifying and wave filtering circuit exports is that high-frequency inverter circuit is powered; High-frequency inverter circuit is the DC power conversion former limit DC-DC conversion circuit exported is that high frequency alternating-current is supplied to former limit magnetic energy for emission coil, high-frequency ac current, when former limit magnetic energy for emission coil midstream is logical, produces the magnetic field of high-frequency alternating near the magnetic energy for emission coil of former limit; Former limit magnetic energy for emission coil transmissions magnetic energy; Secondary magnetic energy pickup coil picks up the magnetic energy of former limit magnetic energy for emission coil transmissions, picks up in coil at secondary magnetic energy and produces alternating-current; Secondary current rectifying and wave filtering circuit secondary magnetic energy picks up the alternating-current of coil pickup to be transformed into direct current be that secondary DC-DC conversion circuit is powered; Secondary DC-DC conversion circuit is that the DC power conversion exported by secondary current rectifying and wave filtering circuit becomes the direct current of required size to be that three-phase inverting circuit is powered; Three-phase inverting circuit be by secondary DC-DC conversion circuit export DC power conversion be three-phase alternating current supply speed regulation device, the three-phase alternating current that three-phase inverter circuitry exports is changed into the alternating-current of required frequency and amplitude by speed regulation device, thus be machine operation offer power supply, control motor at the uniform velocity runs.
Described wireless power supply system is the efficiency of raising system, is all provided with resonance compensation circuit at former limit magnetic energy for emission coil and secondary magnetic energy pickup coil side, reduces the wattless power of system.
The control chip of described former limit digital control unit and secondary digital control unit adopts dsp chip, and the pwm pulse that dsp chip produces controls former limit DC-DC conversion circuit, high-frequency inverter circuit, secondary DC-DC conversion circuit, three-phase inverting circuit and speed regulation device work.
The control method of described periphery transmission rake thickener transmission dolly wireless power supply system:
(1) power on operation: operator is by pressing releasing the button on hand-held control terminal, open control signal and it is sent to former limit radio communication module and secondary radio communication module with wireless form from hand-held control terminal, former limit radio communication module is after receiving unlatching control signal, sent to former limit digital control unit, the dsp chip of former limit digital control unit produces pwm pulse triggering power supply module Central Plains limit DC-DC conversion circuit and high-frequency inverter circuit opens work, secondary radio communication module is after receiving unlatching control signal, sent to secondary digital control unit, the dsp chip of secondary digital control unit produces pwm pulse and triggers secondary DC-DC conversion circuit, work opened by three-phase inverting circuit and speed regulation device, thus realize motor wireless power in transmission dolly, transmission dolly starts to run around concentration basin.
(2) constant current, at the uniform velocity control: when not changing the tripping pulse of secondary DC-DC conversion circuit and three-phase inverting circuit, the input voltage of speed regulation device is relevant to size of current in the magnetic energy for emission coil of former limit, for making the input voltage of speed regulation device keep constant, motor in transmission dolly is carried out speed regulating control, need to detect the electric current in the magnetic energy for emission coil of former limit by coil current detection module, coil current is detected Signal transmissions to former limit digital control unit by coil current detection module, after coil current is detected signal computing by the dsp chip of former limit digital control unit, change the tripping pulse of former limit DC-DC conversion circuit, make current constant in the magnetic energy for emission coil of former limit, in addition speed regulation device change out-put supply by required speed governing mode, the rotating speed of motor in control transmission dolly, motor in transmission dolly is at the uniform velocity run in different loads situation.
(3) failure testing and process: the received current being detected motor in transmission dolly by current of electric detection module, and send the motor current signal of detection to secondary digital control unit, when motor received current is excessive, tri-phase current is asymmetric and during other failure conditions in motor input, after current of electric is detected signal computing by the dsp chip of secondary digital control unit, close the PWM tripping pulse that secondary digital control unit exports, the trouble signal that secondary digital control unit obtains after current of electric is detected signal processing simultaneously exports to secondary radio communication module, trouble signal is wirelessly sent to former limit radio communication module by secondary radio communication module, the trouble signal received is transferred to former limit digital control unit by former limit radio communication module, after trouble signal is processed by former limit digital control unit, close the PWM tripping pulse that former limit digital control unit exports, make motor in transmission dolly out of service under the failure condition such as stall or phase shortage.
(4) power-off is shut down: when needs stop transmission dolly; the stop button of operator by pressing on hand-held control terminal; with wireless form to former limit radio communication module and secondary radio communication mold block transfer stop control signal; thus making former limit digital control unit and secondary digital control unit stopping work so that in transmission dolly, motor power-off is out of service.
Useful effect: periphery transmission rake thickener transmission dolly is wirelessly powered, lay corresponding former limit magnetic energy for emission coil in orbit, control power device and secondary of former limit by former limit digital control unit and secondary digital control unit to receive and circuit working in changing device, electric energy just can be sent to by the form that magnetic field is coupled in secondary reception and changing device, and then be motor offer power supply in transmission dolly, it is achieved that motor safety, reliable power supply.
Advantage: with periphery transmission rake thickener adopt current collector device power supply mode the difference is that, the rake thickener of the present invention transmission dolly wireless power supply system, achieve safe, efficient, the reliable power supply under severe environment, decrease the number of times that the electric accident that heavy rain or black water cause under open-air atmosphere occurs, maintenance, repair workload is greatly reduced, thus improves the security of rake thickener and the economic benefit of coal separating plant.
Accompanying drawing explanation
Fig. 1 is the periphery transmission rake thickener structural representation of the present invention.
Fig. 2 is the functional block diagram of the present invention.
Fig. 3 is main power circuit and the pilot circuit block diagram of the present invention.
Fig. 4 is electromagnetic mechanism schematic diagram in the present invention.
Fig. 5 is the workflow diagram of the present invention.
In figure, 1, central tube; 2, center post; 3, transmission frame; 4, track; 5, harrow frame; 6, concentration basin; 7, wireless power supply system; 8, former limit powers device; 9, secondary receives and changing device; 10, former limit digital control unit; 11, secondary digital control unit; 12, former limit radio communication module; 13, secondary radio communication module; 14, transmission dolly; 15, power supply module; 16, former limit magnetic energy for emission coil; 17, coil current detection module; 18, secondary magnetic energy pickup coil; 19, secondary resonance compensation circuit; 20, secondary current rectifying and wave filtering circuit; 21, secondary DC-DC conversion circuit; 22, three-phase inverting circuit; 23, speed regulation device; 24, current of electric detection module; 25, AC power; 26, former limit current rectifying and wave filtering circuit; 27, former limit DC-DC conversion circuit; 28, high-frequency inverter circuit; 29, former limit resonance compensation circuit; 30, pickup device.
Embodiment
Embodiment 1: the present invention comprises periphery transmission rake thickener transmission dolly wireless power supply system and control method, and concrete scheme is as follows:
Fig. 1 is periphery transmission rake thickener structural representation, rake thickener one-piece construction comprises central tube 1, center post 2, transmission frame 3, track 4, harrow frame 5, concentration basin 6, wireless power supply system 7 etc., its middle orbit 4 was laid on outside prolonging on concentration basin 6, around concentration basin 6 one weeks.
In Fig. 2 wireless power supply system 7 by former limit power device 8, secondary receives and changing device 9, former limit digital control unit 10, secondary digital control unit 11, former limit radio communication module 12, secondary radio communication module 13 and transmission dolly 14 form, power device 8, former limit digital control unit 10 and former limit radio communication module 12 of its limit, Central Plains is arranged on track 4 side; Secondary receives and changing device 9, secondary digital control unit 11 and secondary radio communication module 13 are arranged on transmission dolly 14. The output of former limit digital control unit 10 controls former limit and powers device 8; The output control secondary of secondary digital control unit 11 receives and changing device 9 and secondary radio communication module 13. Power device 8, former limit digital control unit 10 and former limit radio communication module 12 of former limit is arranged on the Signal transmissions that track 4 side facilitates between them together; Equally, secondary reception and changing device 9, secondary digital control unit 11 and secondary radio communication module 13 are arranged on transmission dolly 14 also to facilitate the Signal transmissions between them together. Communication between former limit radio communication module 12 and secondary radio communication module 13 wirelessly realizes.
In Fig. 1, in transmission dolly 14, motor is wirelessly powered, and transmission dolly 14 and transmission frame 3 link together, and in transmission dolly 14, motor is rotated along track 4 by deceleration device band action roller wheel, thus transmission frame 3 is stirred in concentration basin 6 with harrow frame 5.
Described former limit device 8 of powering is made up of power supply module 15, former limit magnetic energy for emission coil 16, coil current detection module 17, module 15 of wherein powering is connected with former limit magnetic energy for emission coil 16, power supply module 15 is powered for former limit magnetic energy for emission coil 16, and coil current detection module 17 is series at former limit magnetic energy for emission coil 16.
Described secondary receives and changing device 9 picks up coil 18 by secondary magnetic energy, secondary resonance compensation circuit 19, secondary current rectifying and wave filtering circuit 20, secondary DC-DC conversion circuit 21, three-phase inverting circuit 22, speed regulation device 23 and current of electric detection module 24 form, wherein secondary magnetic energy pickup coil 18 is connected with secondary current rectifying and wave filtering circuit 20 by secondary resonance compensation circuit 19, secondary current rectifying and wave filtering circuit 20, secondary DC-DC conversion circuit 21, three-phase inverting circuit 22, speed regulation device 23, current of electric detection module 24 is linked in sequence successively, current of electric detection module 24 is series at the three-phase input end of motor in transmission dolly 14.
Described power supply module 15 is made up of AC power 25, former limit current rectifying and wave filtering circuit 26, former limit DC-DC conversion circuit 27, high-frequency inverter circuit 28, former limit resonance compensation circuit 29, wherein AC power 25, former limit current rectifying and wave filtering circuit 26, former limit DC-DC conversion circuit 27, high-frequency inverter circuit 28 are linked in sequence successively, and high-frequency inverter circuit 28 is connected by former limit resonance compensation circuit 29 and former limit magnetic energy for emission coil 16.
The output terminal of described coil current detection module 17 and former limit radio communication module 12 is connected to the input terminus of former limit digital control unit 10, and the output terminal of former limit digital control unit 10 is connected with former limit DC-DC conversion circuit 27, high-frequency inverter circuit 28; The output terminal of current of electric detection module 24 and secondary radio communication module 13 is connected to the input terminus of secondary digital control unit 11, and the output terminal of secondary digital control unit 11 is connected with secondary DC-DC conversion circuit 21, three-phase inverting circuit 22, speed regulation device 23 and secondary radio communication module 13.
Described former limit magnetic energy for emission coil 16 was laid on track 4, around concentration basin 6 one weeks. In Fig. 4, secondary magnetic energy pickup coil 18 is spiral coil, is wrapped on pickup device 30; Pickup device 30 can be the one in inverted U-shaped, semi-circular shape, half side's annular; Pickup device 30 is for leading the strong material of magnetic energy power, and the magnetic field launched for former limit magnetic energy for emission coil 16 provides good loop so that secondary magnetic energy pickup coil 18 can better receive magnetic energy; Pickup device 30 is fixed on the bottom of transmission dolly 14, can rotate around concentration basin 6 with transmission dolly 14. The spacing of former limit magnetic energy for emission coil 16 and secondary magnetic energy pickup coil 18 is very near, realizes electric energy wireless transmission under the effect of coupled magnetic field.
Described speed regulation device 23 can be hand over straight friendship, AC-AC frequency converter or other devices that can be used for regulating and controlling electric motor starting, stopping and at the uniform velocity steady running in transmission dolly 14.
The method of supplying power to of described wireless power supply system 7 is: former limit current rectifying and wave filtering circuit 26 is that the alternating-current that AC power 25 exports is transformed into direct current is that former limit DC-DC conversion circuit 27 is powered; Former limit DC-DC conversion circuit 27 is that high-frequency inverter circuit 28 is powered by the direct current that the DC power conversion that former limit current rectifying and wave filtering circuit 26 exports is required size; High-frequency inverter circuit 28 is that high frequency alternating-current is supplied to former limit magnetic energy for emission coil 16 by the DC power conversion that former limit DC-DC conversion circuit 27 exports, when high-frequency ac current circulates in former limit magnetic energy for emission coil 16, near former limit magnetic energy for emission coil 16, produce the magnetic field of high-frequency alternating; Magnetic energy launched by former limit magnetic energy for emission coil 16; Secondary magnetic energy pickup coil 18 picks up the magnetic energy that former limit magnetic energy for emission coil 16 is launched, and picks up in coil 18 at secondary magnetic energy and produces alternating-current; Secondary current rectifying and wave filtering circuit 20 is that the alternating-current that secondary magnetic energy pickup coil 18 picks up is transformed into direct current supply secondary DC-DC conversion circuit 21; Secondary DC-DC conversion circuit 21 is that the DC power conversion exported by secondary current rectifying and wave filtering circuit 20 becomes the direct current of required size to be that three-phase inverting circuit 22 is powered; Three-phase inverting circuit 22 is DC power conversion secondary DC-DC conversion circuit 21 exported is three-phase alternating current supply speed regulation device 23, the three-phase alternating current that three-phase inverting circuit 22 exports is transformed into the alternating-current of required frequency and amplitude by speed regulation device 23, thus is machine operation offer power supply. Former limit current rectifying and wave filtering circuit 26 and secondary current rectifying and wave filtering circuit 20 adopt bridge-type uncontrollable rectifier capacitor filter, high-frequency inverter circuit 28 adopts the one in single-phase semi-bridge inversion circuit, single-phase full bridge inversion circuit, push-pull type single-phase inversion circuit, and three-phase inverting circuit 22 adopts three-phase inverter bridge circuit.
Described wireless power supply system 7 is the efficiency of raising system, is provided with former limit resonance compensation circuit 29 on former limit magnetic energy for emission coil 16 side, picks up coil 18 side at secondary magnetic energy and is provided with secondary resonance compensation circuit 19.
Described former limit digital control unit 10 and the control chip of secondary digital control unit 11 all adopt dsp chip, and the pwm pulse that in Fig. 3, dsp chip produces controls former limit DC-DC conversion circuit 27, high-frequency inverter circuit 28, secondary DC-DC conversion circuit 21, three-phase inverting circuit 22 and speed regulation device 23 and works.
Fig. 5 is the workflow diagram of the present invention, in step #1, operator is by pressing releasing the button on hand-held control terminal, open control signal and it is sent to former limit radio communication module 12 and secondary radio communication module 13 with wireless form from hand-held control terminal, former limit radio communication module 12 is after receiving unlatching control signal, being sent to former limit digital control unit 10, the dsp chip of former limit digital control unit 10 produces pwm pulse triggering power supply limit, module 15 Central Plains DC-DC conversion circuit 27 and high-frequency inverter circuit 28 opens work, secondary radio communication module 13 is after receiving unlatching control signal, sent to secondary digital control unit 11, the dsp chip of secondary digital control unit 11 produces pwm pulse triggering secondary DC-DC conversion circuit 21, three-phase inverting circuit 22 and speed regulation device 23 and opens work, thus realizing motor wireless power in transmission dolly 14, transmission dolly 14 starts to run around concentration basin 6. step #2 is used for judging in transmission dolly 14, whether motor has fault, and the tri-phase current that current of electric detection module 24 detects motor input is sent in secondary digital control unit 11 and carried out judgement process. if judging there is fault in motor, then jump to step #6, the automatic power-off of the first situation performing step #6 is shut down, namely the pwm pulse that secondary digital control unit 11 exports is closed, the trouble signal obtained after process is exported to secondary radio communication module 13 by secondary digital control unit 11 simultaneously, trouble signal is wirelessly sent to former limit radio communication module 12 by secondary radio communication module 13, the trouble signal received is transferred to after former limit digital control unit 10 processes by former limit radio communication module 12, close the pwm pulse that former limit digital control unit 10 exports, make motor in transmission dolly 14 out of service under the failure condition such as stall or phase shortage, if judging, motor does not have fault, then perform step #3 and judge in former limit magnetic energy for emission coil 16, whether electric current keeps constant, and the electric current that coil current detection module 17 detects in former limit magnetic energy for emission coil 16 is sent in former limit digital control unit 10 and carried out judgement process. if judging, in former limit magnetic energy for emission coil 16, electric current changes, the dsp chip then performing step #4 former limit digital control unit 10 changes the pwm pulse of former limit DC-DC conversion circuit 27, and then perform step #3 continue judge in former limit magnetic energy for emission coil 16, whether electric current keeps constant, electric current in former limit magnetic energy for emission coil 16 is made to remain constant, thus the input voltage making speed regulation device 23 keeps constant, so that speed regulation device 23 regulate motor in transmission dolly 14 at the uniform velocity to run, if judging, in former limit magnetic energy for emission coil 16, electric current keeps constant, then perform step #5 and at the uniform velocity run, regulate and control motor in transmission dolly 14 by speed regulation device 23 and at the uniform velocity run. after execution of step #5, perform the 2nd kind of situation people of step #6 for power-off shutdown, when operator needs to stop transmission dolly 14, the stop button of operator by pressing on hand-held control terminal, stop control signal is transmitted to former limit radio communication module 12 and secondary radio communication module 13 with wireless form, former limit radio communication module 12 is after receiving stop control signal, it is transferred to former limit digital control unit 10, secondary radio communication module 13 is after receiving stop control signal, it is transferred to secondary digital control unit 11, thus make former limit digital control unit 10 and secondary digital control unit 11 stop work, make motor power-off in transmission dolly 14 out of service.
Claims (8)
1. a periphery transmission rake thickener transmission dolly wireless power supply system, it is characterized in that: rake thickener one-piece construction comprises central tube, center post, transmission frame, track, harrow frame, concentration basin and wireless power supply system, outside wherein track laying prolongs on concentration basin, around concentration basin one week;
Described wireless power supply system is powered device by former limit, secondary receives and changing device, former limit digital control unit, secondary digital control unit, former limit radio communication module, secondary radio communication module and transmission dolly composition, its limit, Central Plains powers device, former limit digital control unit and former limit radio communication module are arranged on track side, secondary receives and changing device, secondary digital control unit and secondary radio communication module are arranged on transmission dolly, the output of former limit digital control unit controls former limit and powers device, the output control secondary of secondary digital control unit receives and changing device and secondary radio communication module,
Described former limit device of powering is made up of module of powering, former limit magnetic energy for emission coil, coil current detection module, module of wherein powering is connected with former limit magnetic energy for emission coil, power supply module is former limit magnetic energy for emission coil power supply, and coil current detection module is series at former limit magnetic energy for emission coil;
Described secondary receives and changing device picks up coil by secondary magnetic energy, secondary resonance compensation circuit, secondary current rectifying and wave filtering circuit, secondary DC-DC conversion circuit, three-phase inverting circuit, speed regulation device and current of electric detection module composition, wherein secondary magnetic energy pickup coil is connected with secondary current rectifying and wave filtering circuit by secondary resonance compensation circuit, secondary current rectifying and wave filtering circuit, secondary DC-DC conversion circuit, three-phase inverting circuit, speed regulation device, current of electric detection module is linked in sequence successively, current of electric detection module is series at the three-phase input end of motor in transmission dolly,
The control method of described a kind of periphery transmission rake thickener transmission dolly wireless power supply system is:
(1) power on operation: operator is by pressing releasing the button on hand-held control terminal, open control signal and it is sent to former limit radio communication module and secondary radio communication module with wireless form from hand-held control terminal, former limit radio communication module is after receiving unlatching control signal, sent to former limit digital control unit, the dsp chip of former limit digital control unit produces pwm pulse triggering power supply module Central Plains limit DC-DC conversion circuit and high-frequency inverter circuit opens work, secondary radio communication module is after receiving unlatching control signal, sent to secondary digital control unit, the dsp chip of secondary digital control unit produces pwm pulse and triggers secondary DC-DC conversion circuit, work opened by three-phase inverting circuit and speed regulation device, thus realize motor wireless power in transmission dolly, transmission dolly starts to run around concentration basin,
(2) constant current, at the uniform velocity control: when not changing the tripping pulse of secondary DC-DC conversion circuit and three-phase inverting circuit, the input voltage of speed regulation device is relevant to size of current in the magnetic energy for emission coil of former limit, for making the input voltage of speed regulation device keep constant, motor in transmission dolly is carried out speed regulating control, need to detect the electric current in the magnetic energy for emission coil of former limit by coil current detection module, coil current is detected Signal transmissions to former limit digital control unit by coil current detection module, after coil current is detected signal computing by the dsp chip of former limit digital control unit, change the tripping pulse of former limit DC-DC conversion circuit, make current constant in the magnetic energy for emission coil of former limit, speed regulation device change out-put supply by required speed governing mode, the rotating speed of motor in control transmission dolly, motor in transmission dolly is at the uniform velocity run in different loads situation,
(3) failure testing and process: the received current being detected motor in transmission dolly by current of electric detection module, and send the motor current signal of detection to secondary digital control unit, when motor received current is excessive, tri-phase current is asymmetric and during other failure conditions in motor input, after current of electric is detected signal computing by the dsp chip of secondary digital control unit, close the PWM tripping pulse that secondary digital control unit exports, the trouble signal that secondary digital control unit obtains after current of electric is detected signal processing simultaneously exports to secondary radio communication module, trouble signal is wirelessly sent to former limit radio communication module by secondary radio communication module, the trouble signal received is transferred to former limit digital control unit by former limit radio communication module, after trouble signal is processed by former limit digital control unit, close the PWM tripping pulse that former limit digital control unit exports, make motor in transmission dolly out of service under stall or phase shortage situation,
(4) power-off is shut down: when needs stop transmission dolly; the stop button of operator by pressing on hand-held control terminal; with wireless form to former limit radio communication module and secondary radio communication mold block transfer stop control signal; thus making former limit digital control unit and secondary digital control unit stopping work so that in transmission dolly, motor power-off is out of service.
2. a kind of periphery transmission rake thickener transmission dolly wireless power supply system according to claim 1, it is characterized in that: described power supply module is made up of AC power, former limit current rectifying and wave filtering circuit, former limit DC-DC conversion circuit, high-frequency inverter circuit, former limit resonance compensation circuit, wherein AC power, former limit current rectifying and wave filtering circuit, former limit DC-DC conversion circuit, high-frequency inverter circuit are linked in sequence successively, and high-frequency inverter circuit is connected by former limit resonance compensation circuit and former limit magnetic energy for emission coil.
3. a kind of periphery transmission rake thickener transmission dolly wireless power supply system according to claim 1, it is characterized in that: the output terminal of described coil current detection module and former limit radio communication module is connected to the input terminus of former limit digital control unit, and the output terminal of former limit digital control unit is connected with former limit DC-DC conversion circuit, high-frequency inverter circuit; The output terminal of current of electric detection module and secondary radio communication module is connected to the input terminus of secondary digital control unit, and the output terminal of secondary digital control unit is connected with secondary DC-DC conversion circuit, three-phase inverting circuit, speed regulation device and secondary radio communication module.
4. a kind of periphery transmission rake thickener transmission dolly wireless power supply system according to claim 1, it is characterised in that: described former limit magnetic energy for emission coil was laid in orbit, around concentration basin one week; Secondary magnetic energy pickup coil is spiral coil, is wrapped on pickup device; Pickup device is the one in inverted U-shaped, semi-circular shape, and pickup device is lead the strong material of magnetic energy power, for the magnetic field of former limit magnetic energy for emission coil transmissions provides good loop so that secondary magnetic energy pickup coil can better receive magnetic energy.
5. a kind of periphery transmission rake thickener transmission dolly wireless power supply system according to claim 1, it is characterised in that: described speed regulation device be hand over straight hand over, AC-AC frequency converter or other devices that can be used for regulating and controlling in transmission dolly electric motor starting, stopping and at the uniform velocity running.
6. a kind of periphery transmission rake thickener transmission dolly wireless power supply system according to claim 1, it is characterised in that: the method for supplying power to of described wireless power supply system is: former limit current rectifying and wave filtering circuit is that the alternating-current that AC power exports is transformed into direct current is that former limit DC-DC conversion circuit is powered; Former limit DC-DC conversion circuit is be the direct current of required size by the DC power conversion that former limit current rectifying and wave filtering circuit exports is that high-frequency inverter circuit is powered; High-frequency inverter circuit is the DC power conversion former limit DC-DC conversion circuit exported is that high frequency alternating-current is supplied to former limit magnetic energy for emission coil, high-frequency ac current, when former limit magnetic energy for emission coil midstream is logical, produces the magnetic field of high-frequency alternating near the magnetic energy for emission coil of former limit; Former limit magnetic energy for emission coil transmissions magnetic energy; Secondary magnetic energy pickup coil picks up the magnetic energy of former limit magnetic energy for emission coil transmissions, picks up in coil at secondary magnetic energy and produces alternating-current; Secondary current rectifying and wave filtering circuit secondary magnetic energy picks up the alternating-current of coil pickup to be transformed into direct current be that secondary DC-DC conversion circuit is powered; Secondary DC-DC conversion circuit is that the DC power conversion exported by secondary current rectifying and wave filtering circuit becomes the direct current of required size to be that three-phase inverting circuit is powered; Three-phase inverting circuit be by secondary DC-DC conversion circuit export DC power conversion be three-phase alternating current supply speed regulation device, the three-phase alternating current that three-phase inverter circuitry exports is changed into the alternating-current of required frequency and amplitude by speed regulation device, thus is machine operation offer power supply.
7. a kind of periphery transmission rake thickener transmission dolly wireless power supply system according to claim 1, it is characterized in that: for improving the efficiency of wireless power supply system, at former limit magnetic energy for emission coil and secondary magnetic energy pickup coil side, resonance compensation circuit is all installed, reduces the wattless power of system.
8. a kind of periphery transmission rake thickener transmission dolly wireless power supply system according to claim 1, it is characterized in that: the control chip of former limit digital control unit and secondary digital control unit adopts dsp chip, the pwm pulse that dsp chip produces controls former limit DC-DC conversion circuit, high-frequency inverter circuit, secondary DC-DC conversion circuit, three-phase inverting circuit and speed regulation device work.
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| CN106899049A (en) * | 2015-12-21 | 2017-06-27 | 乐金电子研发中心(上海)有限公司 | Electric energy dispensing device, electric energy reception device and wireless charging system for electric automobile |
| CN108539873B (en) * | 2018-06-14 | 2023-12-19 | 吉成无线（深圳）有限公司 | Gas and liquid transmission butt joint control device with wireless power supply mode |
| CN112977102A (en) * | 2021-04-19 | 2021-06-18 | 国网黑龙江省电力有限公司电力科学研究院 | Dynamic resonant magnetic coupling wireless charging system for electric automobile |
| CN114030381B (en) * | 2021-11-09 | 2023-12-05 | 重庆前卫无线电能传输研究院有限公司 | High-power wireless energy transmission system of heavy-load AGV trolley and control method |
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