CN105406785A - Shaft doubly-fed generator system for ship - Google Patents
Shaft doubly-fed generator system for ship Download PDFInfo
- Publication number
- CN105406785A CN105406785A CN201511011706.9A CN201511011706A CN105406785A CN 105406785 A CN105406785 A CN 105406785A CN 201511011706 A CN201511011706 A CN 201511011706A CN 105406785 A CN105406785 A CN 105406785A
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- Prior art keywords
- controller
- axle band
- side converter
- ship
- electric engine
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/12—Stator flux based control involving the use of rotor position or rotor speed sensors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses a shaft doubly-fed generator system for ship. The system comprises a propeller, a shaft doubly-fed motor, a rotating speed sensor, a sampling circuit, a doubly-fed converter and a controller, wherein the propeller is connected to a rotor of the shaft doubly-fed motor, and a stator of the shaft doubly-fed motor is connected to a ship power grid; the doubly-fed converter comprises a generator side converter connected to a three-phase excitation winding of the rotor of the shaft doubly-fed motor, a grid side converter connected to the ship power grid and a DC-link capacitor, wherein the generator side converter and the grid side converter are connected through two DC buses, and the DC-link capacitor is bridged between the two DC buses; output ends of the rotating speed sensor and the sampling circuit are connected to an input end of the controller; and a first control output end of the controller is connected to a control input end of the generator side converter, and a second control output end of the controller is connected to a control input end of the DC-link capacitor. According to the shaft doubly-fed generator system for ship, a doubly-fed generation technology is applied to a shaft motor system for ship, and bidirectional flow of power is realized.
Description
Technical field
The present invention relates to marine vessel power technology.
Background technology
Since the seventies, because oil crisis occurs in the Middle East, some scholar's proposition ship main engine shafts drive electrical power generators to replace the independent diesel engine generator of tradition to generate electricity.Boats and ships axle generator and electricity generation system are exactly grow up gradually in this context.Shaft-Generator belongs to without frequency compensation electricity generation system before, 1880s, Kawasaki company of Japan have developed roll onroll-off type Shaft-Generator peculiar to vessel, it is serious that this generator system is subject to the impact of marine stormy waves situation, engine speed change will affect mains frequency to a great extent, almost can not operate time serious, can only traditional standby generator powered be passed through if desired.There is the frequency compensation type axle generator of Mechanical course than uncompensated axle generator further in the later stage, when engine speed changes, rotating speed can be made to remain on certain value by compensation arrangement.But this system is when main frame speed and rated speed have big difference, and installed capacity is by limited.Since the later stage eighties, the appearance of large power all-controlled device IGBT and the maturation of PWM technology, PWM rectifier and inverter are applied in boats and ships generating and go, and bring to generating effect and largely improve.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of axle band dual-feeding motor system peculiar to vessel, and doubly-fed generation technology has been applied in ship shaft translator system by it.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of axle band dual-feeding motor system peculiar to vessel, comprises screw, axle band double feedback electric engine, speed probe, sample circuit, double-feed current transformer and controller; Screw is connected with the rotor of axle band double feedback electric engine, and the stator of axle band double feedback electric engine is connected with network of ship; Double-feed current transformer comprise be connected with the three phase excitation winding of the rotor of axle band double feedback electric engine pusher side current transformer, for the net side converter that is connected with network of ship and dc-link capacitance, pusher side current transformer is connected by two DC buss with net side converter, and dc-link capacitance is connected across between two DC buss; Speed probe is used for the rotor speed of detection axis band double feedback electric engine, and sample circuit is for the stator voltage of the voltage and axle band double feedback electric engine that detect dc-link capacitance, stator current and rotor current; The output of speed probe is connected with the input of controller with the output of sample circuit, first control output end of controller is connected with the control input end of pusher side current transformer, and the second control output end of controller is connected with the control input end of net side converter.
After sampling technique scheme, the voltage-regulation function of double feedback electric engine can be realized, realize the two-way flow of power.The present invention, according to boats and ships Generation Control standard design, can be widely used in Ship Power Station.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of axle band dual-feeding motor system peculiar to vessel according to an embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, invention is described in detail.
Refer to Fig. 1.According to a kind of axle band dual-feeding motor system peculiar to vessel of the present invention, comprise screw 1, axle band double feedback electric engine 2, speed probe 3, sample circuit 4, double-feed current transformer and controller 6.
Screw 1 is connected with the rotor of axle band double feedback electric engine 2, rotates for rotor driven; The stator of axle band double feedback electric engine 2 is connected with network of ship 10.
Double-feed current transformer comprise be connected with the three phase excitation winding of the rotor of axle band double feedback electric engine pusher side current transformer 51, for the net side converter 52 that is connected with network of ship 10 and dc-link capacitance 53, pusher side current transformer 51 is connected by two DC buss 54 with net side converter 52, and dc-link capacitance 53 is connected across between two DC buss 54.Dc-link capacitance 53 has the effect of filtering, and axle band double feedback electric engine 2 pairs of network of ships can be avoided to cause interference.
Speed probe 3 is for the rotor speed of detection axis band double feedback electric engine, and sample circuit 4 is for the stator voltage of the voltage and axle band double feedback electric engine that detect dc-link capacitance 53, stator current and rotor current.The output of speed probe 3 is connected with the input of controller 6 with the output of sample circuit 4, first control output end of controller 6 is connected with the control input end of pusher side current transformer 51, and the second control output end of controller 6 is connected with the control input end of net side converter 52.In the present embodiment, speed probe 3 can adopt photoelectric encoder, and controller 6 can adopt dsp chip, and model is the TMS302F28335 of TI company.
Axle band dual-feeding motor system peculiar to vessel also comprises a ups power 7, and ups power 7 is connected across between two DC buss.This ups power can be used as stand-by power supply and uses, when the system failure or motor speed inadequate time can control this power supply electrifying and provide control power supply to motor, thus improve the operational reliability of whole system.
When ship's main diesel engine drives screw 1 to rotate, a part of mechanical energy being also delivered on the rotor of axle band double feedback electric engine 2, having made it rotate simultaneously along with rotating together at screw 1.When axle band double feedback electric engine 2 works, the machinery speed of power frequency ω sl and rotor that the pulsation ω s that the stator of axle band double feedback electric engine 2 exports equals the rotor of axle band double feedback electric engine 2 runs angular frequency r sum, i.e. ω r+ ω sl=ω s.ω sl is also called slip frequency, is the rotor-side being supplied to motor by controller 6; ω s is also called synchro angle frequency, due in network of ship use frequency f to be the industrial-frequency alternating current of 50Hz, and ω s=2 π f, therefore ω s is a determined value.Controller 6 can obtain mechanical separator speed nr and the machinery speed operation angular frequency r of rotor based on the detection signal of speed probe 3, simultaneously, based on the stator voltage collected and stator current, the rotating speed n of the rotating magnetic field of the stator of axle band double feedback electric engine 2 can be obtained.
As nr < n, axle band double feedback electric engine 2 is in metasynchronism generating state, and controller 6 controller side converter 51 works in inverter mode, and dc-link capacitance 53 discharges, and causes DC bus-bar voltage to decline slightly.In order to keep DC bus-bar voltage constant, controller 6 simultaneously Controling network side converter 52 is operated in rectification state.As nr > n, axle band double feedback electric engine 2 is in supersynchronous running status, the rotor-side of axle band double feedback electric engine 2 needs to DC bus electric discharge, and controller 6 controller side converter 51 is converted to rectification state, and now the voltage of dc-link capacitance 53 has the trend risen slightly.Rise to limit DC bus-bar voltage, controller 6 simultaneously Controling network side converter 52 is converted to inverter mode, to make net side converter 52 by the electric energy feedback on DC bus to network of ship 10.
The control mode of controller 6 pairs of pusher side current transformers 51 and net side converter 52 has multiple, and control with the constant frequency realizing electric energy, the application does not limit this.
In the present embodiment, controller 6 passes through stator flux orientation vector control mode controller side converter 51, by grid voltage orientation vector control mode Controling network side converter 52.
Wherein, controller 6 using rotor speed nr as input signal, rotating magnetic field rotating speed with reference to motor stator exports quadrature axis reference current signal, given direct-axis current reference value is zero, to hand over, direct-axis current reference signal respectively with the dq coordinate system lower rotor part top-cross obtained after Clark converts and Park converts, direct-axis current detection signal is compared, input signal as two current control module participates in computing, outputed signal and carried out plus and minus calculation with current feed-forward decoupling zero component, the friendship exported, the motor speed that d-axis reference voltage signal and speed probe obtain is connected to vector module, two phase voltages under output α β coordinate system, finally using the control variables of the voltage detecting value of above-mentioned voltage signal and dc-link capacitance as controller 6.
The stator line voltage of the axle band double feedback electric engine 2 that controller 6 arrives according to real-time sampling, adopt that digital servo-control is around-France calculates stator three-phase voltage space combination vector in real time, and then according to the functional relation determination flux linkage vector between flux linkage vector during double feedback electric engine steady operation and voltage vector, and synchronously rotating reference frame d-axis is positioned on flux linkage vector axle.Controller 6 using the voltage given value of dc-link capacitance and its voltage detecting value as its input signal, export d-axis reference current, given quadrature axis reference current value is zero, to hand over, direct-axis current reference signal respectively with the off line top-cross of dq coordinate system obtained after clark converts and Park converts, direct-axis current detection signal is compared, input signal as two current control module participates in computing, to output signal and current feed-forward decoupling zero component, voltage compensation component carries out plus and minus calculation, the friendship exported, the rotor signal that d-axis reference voltage signal and speed probe obtain is as the input signal of vector module, export the control variables of voltage detecting value as controller 6 of voltage signal and dc-link capacitance under α β coordinate system.
Claims (5)
1. an axle band dual-feeding motor system peculiar to vessel, is characterized in that, comprises screw, axle band double feedback electric engine, speed probe, sample circuit, double-feed current transformer and controller;
Described screw is connected with the rotor of described axle band double feedback electric engine; The stator of described axle band double feedback electric engine is connected with network of ship;
Described double-feed current transformer comprise be connected with the three phase excitation winding of the rotor of described axle band double feedback electric engine pusher side current transformer, for the net side converter that is connected with described network of ship and dc-link capacitance, described pusher side current transformer is connected by two DC buss with described net side converter, and described dc-link capacitance is connected across between two DC buss;
Described speed probe is for detecting the rotor speed of described axle band double feedback electric engine, and described sample circuit is for the stator voltage of the voltage and described axle band double feedback electric engine that detect described dc-link capacitance, stator current and rotor current; The output of described speed probe is connected with the input of described controller with the output of described sample circuit, first control output end of described controller is connected with the control input end of described pusher side current transformer, and the second control output end of described controller is connected with the control input end of described net side converter.
2. axle band dual-feeding motor system peculiar to vessel according to claim 1, is characterized in that, described axle band dual-feeding motor system peculiar to vessel also comprises a ups power, and described ups power is connected across between described two DC buss.
3. axle band dual-feeding motor system peculiar to vessel according to claim 1, is characterized in that, described controller is by stator flux orientation vector control mode controller side converter;
Described controller is by grid voltage orientation vector control mode Controling network side converter.
4. axle band dual-feeding motor system peculiar to vessel according to claim 1, it is characterized in that, described speed probe is photoelectric encoder.
5. axle band dual-feeding motor system peculiar to vessel according to claim 1, it is characterized in that, described controller is dsp chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011706.9A CN105406785A (en) | 2015-12-30 | 2015-12-30 | Shaft doubly-fed generator system for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011706.9A CN105406785A (en) | 2015-12-30 | 2015-12-30 | Shaft doubly-fed generator system for ship |
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| Publication Number | Publication Date |
|---|---|
| CN105406785A true CN105406785A (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511011706.9A Pending CN105406785A (en) | 2015-12-30 | 2015-12-30 | Shaft doubly-fed generator system for ship |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864715A (en) * | 2017-01-24 | 2017-06-20 | 同济大学 | Double-fed type ship mixing axle translator unit starts the system and method with propulsion |
| CN109120197A (en) * | 2017-06-23 | 2019-01-01 | 中国电力工程顾问集团华东电力设计院有限公司 | Double feedback electric engine frequency conversion speed-adjusting system based on current source converter |
| CN112087166A (en) * | 2020-09-17 | 2020-12-15 | 华中科技大学 | Alternating current-direct current hybrid double-fed asynchronous full-electric ship electric propulsion system and control method |
| CN118619055A (en) * | 2024-08-07 | 2024-09-10 | 南京师范大学 | Vertical gravity energy storage system based on doubly-fed motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201430498Y (en) * | 2009-07-07 | 2010-03-24 | 江门市安利电源工程有限公司 | Marine inverter shaft generator |
| US20130300380A1 (en) * | 2010-06-08 | 2013-11-14 | Siemens Aktiengesellschaft | Shaft-driven generator system |
| CN104037799A (en) * | 2014-05-06 | 2014-09-10 | 北京赛思亿电气科技有限公司 | Ship shaft generator system and control method thereof |
| CN104779856A (en) * | 2014-01-10 | 2015-07-15 | 哈尔滨智晟天诚科技开发有限公司 | Doubly-fed shaft generator system |
-
2015
- 2015-12-30 CN CN201511011706.9A patent/CN105406785A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201430498Y (en) * | 2009-07-07 | 2010-03-24 | 江门市安利电源工程有限公司 | Marine inverter shaft generator |
| US20130300380A1 (en) * | 2010-06-08 | 2013-11-14 | Siemens Aktiengesellschaft | Shaft-driven generator system |
| CN104779856A (en) * | 2014-01-10 | 2015-07-15 | 哈尔滨智晟天诚科技开发有限公司 | Doubly-fed shaft generator system |
| CN104037799A (en) * | 2014-05-06 | 2014-09-10 | 北京赛思亿电气科技有限公司 | Ship shaft generator system and control method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864715A (en) * | 2017-01-24 | 2017-06-20 | 同济大学 | Double-fed type ship mixing axle translator unit starts the system and method with propulsion |
| CN109120197A (en) * | 2017-06-23 | 2019-01-01 | 中国电力工程顾问集团华东电力设计院有限公司 | Double feedback electric engine frequency conversion speed-adjusting system based on current source converter |
| CN109120197B (en) * | 2017-06-23 | 2024-02-02 | 中国电力工程顾问集团华东电力设计院有限公司 | Double-fed motor variable-frequency speed control system based on current source converter |
| CN112087166A (en) * | 2020-09-17 | 2020-12-15 | 华中科技大学 | Alternating current-direct current hybrid double-fed asynchronous full-electric ship electric propulsion system and control method |
| CN118619055A (en) * | 2024-08-07 | 2024-09-10 | 南京师范大学 | Vertical gravity energy storage system based on doubly-fed motor |
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Application publication date: 20160316 |