CN104348367A - Auxiliary converter module - Google Patents
Auxiliary converter module Download PDFInfo
- Publication number
- CN104348367A CN104348367A CN201410614495.7A CN201410614495A CN104348367A CN 104348367 A CN104348367 A CN 104348367A CN 201410614495 A CN201410614495 A CN 201410614495A CN 104348367 A CN104348367 A CN 104348367A
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- CN
- China
- Prior art keywords
- current transformer
- transformer module
- auxiliary current
- support capacitor
- drive plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses an auxiliary converter module, which belongs to the technical field of the electric power, and solves the technical problem in the prior art that the auxiliary converter module is inconvenient to control. The auxiliary converter module comprises a main circuit and a control circuit; the main circuit comprises a pre-charging circuit, a rectifying unit, a supporting capacitor and an inversion unit, external alternating voltage is used for charging the supporting capacitor through the pre-charging circuit, then the external alternating voltage is converted to the direct-current voltage on the supporting capacitor through the rectifying unit, and the direct-current voltage is converted to the alternating voltage through the inversion unit; the control circuit is used for outputting an opening control signal or closing control signal between a gate pole and an emitting electrode of a power switch device in the inversion unit. The auxiliary converter module can be used in a diesel locomotive.
Description
Technical field
The present invention relates to technical field of electric power, specifically, relate to a kind of auxiliary current transformer module.
Background technology
Diesel locomotive is the important component part in railway transportation.Wherein, the auxiliary current transformer module in diesel locomotive for realizing the unsteady flow function of AC-DC-interchange, and assists using electricity system to power for train.
At present, in diesel locomotive, contactor is usually adopted to open the function of auxiliary current transformer module.But the mode loss of employing contactor is large, failure rate is high, therefore there is the technical problem being not easy to control auxiliary current transformer module.
Summary of the invention
The object of the present invention is to provide a kind of auxiliary current transformer module, to solve in prior art the technical problem being not easy to control auxiliary current transformer module.
The invention provides a kind of auxiliary current transformer module, comprise main circuit and control circuit;
Described main circuit comprises precharge loop, rectification unit, Support Capacitor and inversion unit, external communication voltage charges to described Support Capacitor through described precharge loop, external communication voltage changes the direct voltage on described Support Capacitor into through described rectification unit afterwards, then changes direct voltage into alternating voltage through described inversion unit;
Described control circuit is used for exporting the control signal opened or turn off between the gate pole and emitter of the device for power switching in described inversion unit.
Preferably, described precharge loop comprises pre-charge resistance and charging panel;
Described charging panel is used for external communication voltage is charged to described Support Capacitor through described pre-charge resistance, also for driving opening of the switching tube in described rectification unit.
Further, described control circuit comprises drive plate, control board and power panel;
Described power panel is connected with control board with described drive plate respectively, and provides power supply for described drive plate and control board;
Described control board is connected with described drive plate, the control signal that described control board is opened by described drive plate to output between the gate pole and emitter of the device for power switching in described inversion unit or turned off.
Preferably, described rectification unit is the three-phase commutation bridge of thyristor composition.
Preferably, the device for power switching in described inversion unit is IGBT.
Preferably, the customization electric capacity that described Support Capacitor is as a whole.
Further, described main circuit is provided with radiator, described radiator is provided with temperature relay.
Preferably, described radiator is Section Bar Heat Sinks.
Further, between described rectification unit and described Support Capacitor, and between described Support Capacitor and described inversion unit, be provided with the composite bus bar of laminated structure.
Preferably, the composite bus bar of described laminated structure comprises positive busbar, negative busbar and insulating barrier, and described insulating barrier is arranged between described positive busbar and negative busbar.
Present invention offers following beneficial effect: in the main circuit of auxiliary current transformer module provided by the invention, be provided with precharge loop.Before rectification unit carries out rectification, can first be charged to Support Capacitor by precharge loop, to control the size of intermediate voltage on Support Capacitor, when intermediate voltage reaches pre-sizing, restart rectification unit and inversion unit, carry out the unsteady flow of AC-DC-interchange.Therefore, technical scheme provided by the invention can, under the prerequisite not by devices such as contactors, make auxiliary current transformer module can start when small area analysis, and after startup completes, return to running current, thus the operating state of control auxiliary current transformer module that can be convenient.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, accompanying drawing required in describing is done simple introduction below to embodiment:
Fig. 1 is the circuit diagram of the auxiliary current transformer module that the embodiment of the present invention provides;
Fig. 2 is the front view of the auxiliary current transformer module that the embodiment of the present invention provides;
Fig. 3 is the left view of the auxiliary current transformer module that the embodiment of the present invention provides;
Fig. 4 is the right view of the auxiliary current transformer module that the embodiment of the present invention provides;
Fig. 5 is the rearview of the auxiliary current transformer module that the embodiment of the present invention provides.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the embodiment of the present invention provides a kind of auxiliary current transformer module, comprises main circuit 1 and control circuit 2.
Main circuit comprises precharge loop, rectification unit 12, Support Capacitor C and inversion unit 13, external communication voltage charges to Support Capacitor C through precharge loop, external communication voltage changes the direct voltage on Support Capacitor C into through rectification unit 12 afterwards, then changes direct voltage into alternating voltage through inversion unit 13.Control circuit is used for exporting the control signal opened or turn off between the gate pole and emitter of device for power switching V1, V2, V3, V4, V5, the V6 in inversion unit 13.
In the present embodiment, precharge loop comprises pre-charge resistance R1, R2, R3 and charging panel 11.Charging panel 11 charges to Support Capacitor C through pre-charge resistance R1, R2, R3 for making external communication voltage, also for driving opening of switching tube D1, D2, D3 in rectification unit 12.Rectification unit 12 is the three-phase commutation bridge of thyristor D1, D2, D3 composition.
Control circuit comprises drive plate 21, control board 22 and power panel 23.Power panel 23 is connected with control board 22 with drive plate 21 respectively, and provides power supply for drive plate 21 and control board 22.Control board 22 is connected with drive plate 21, the control signal that control board 22 is opened by drive plate 21 to output between the gate pole and emitter of the device for power switching V1 to V6 in inversion unit 13 or turned off.This device for power switching is preferably insulated gate bipolar transistor (Insulated Gate Bipolar Transistor is called for short IGBT), and is provided with anti-paralleled diode.In other embodiments, also thyristor, gate level turn-off thyristor (Gate-Turn-Off Thyristor can be adopted, be called for short GTO), other device for power switching such as integrated gate commutated thyristor (Intergrated Gate Commutated Thyristor, be called for short IGCT).
When auxiliary current transformer module starts, outside 440V three-phase alternating voltage first charges to Support Capacitor C through pre-charge resistance R1, R2, R3 by charging panel 11, and charging panel 11 can also monitor the magnitude of voltage on Support Capacitor C.When after the voltage that Support Capacitor C reaches predetermined, charging panel 11 stops charging to Support Capacitor C, and opens the thyristor in rectification unit 12, makes external communication voltage change the direct voltage on Support Capacitor C into through rectification unit 12.
Opened or turn off control signal by drive plate 21 to exporting between the gate pole and emitter of each IGBT of inversion unit 13 by control board 22 again, making direct voltage on Support Capacitor C after inversion unit 13,380V three-phase alternating voltage can be changed into.
As a preferred version, the customization electric capacity that Support Capacitor C is as a whole, thus under the prerequisite ensureing normal function, facilitate the installation and removal of Support Capacitor C.In addition, Support Capacitor C is parallel with discharge resistance R11, after quitting work in auxiliary current transformer module, by the charge discharge of surplus in Support Capacitor C to safe voltage.
As shown in Figure 3 and Figure 4, main circuit is provided with radiator 3 further, radiator 3 is provided with temperature relay KA1, the output of inversion unit 13 is provided with current sensor SC1, SC2, SC3.Radiator 3 is preferably Section Bar Heat Sinks, not only reduces cost, and Section Bar Heat Sinks has lower thermal resistance, thus improves the radiating efficiency of auxiliary current transformer module.
Drive plate 21 can realize the reception of control board 22 control signal, the driving of the IGBT of inversion unit 13, and treatment temperature signal, current signal and fault-signal also feed back to control board 22.Drive plate 21 is by the signal of received current transducer SC1, SC2, SC3 and temperature relay KA1; export control board 22 after treatment to; then export to drive plate 21 pulse control signal that IGBT opens or turn off by control board 22; by the transmission of driving pulse control signal or stop opening or turning off of control IGBT, realize the defencive function of auxiliary current transformer module.In addition, by arranging 7M Ω resistance R21, R22, can the intermediate voltage on Support Capacitor C be changed into current signal, and pass through drive plate 21 by this current signal transfer to control board 22, control board 22 can determine whether open or turn off IGBT according to the size of intermediate voltage, thus achieve the detection of intermediate voltage, save the space that voltage sensor is set, also save the cost of auxiliary current transformer module.
Power panel 23 receives 110V direct voltage, and provides ± 15V ,+5V direct voltage to drive plate 21, provides+5V direct voltage to control board 22 simultaneously.The gate pulse of IGBT is provided by drive plate 21, and Three-phase SPWM ripple, after acquisition ± 15V ,+5V operating voltage and the SPWM ripple that provided by control board 22, is converted to the six road square-wave pulses of+15V ,-10V by drive plate 21.Drive plate 21 monitors the pulsewidth of SPWM ripple simultaneously ,+5V the voltage magnitude of input queued switches plate 21, and the fault-signal of IGBT and overload signal, and drive plate 21 judges fault and the overload of IGBT by the voltage between monitoring IGBT collector and emitter.When monitoring these signals and occurring abnormal, fault-signal and overload signal by locking pulse, and are given control board 22 by drive plate 21, make control board 22 stop sending SPWM ripple.In addition, drive plate 21 also temperature relay KA1 can be collected the current signal that gathers of temperature signal and current sensor SC1, SC2, SC3 after treatment, export control board 22 to.Control board 22 is under the setting of system, continues to send SPWM ripple or stopping sends SPWM ripple, and SPWM ripple is sent to drive plate 21, thus realizes defencive function.Whole process is that control board 22 sends SPWM ripple to drive plate 21, and obtain feedback signal from drive plate 21, again by communicating with the master system of auxiliary current transformer module outside, thus determine whether interrupt or unbalanced pulse, the process of the IGBT of whole main circuit is made to form a Control loop, make auxiliary current transformer module globality higher, can independent practical function.
Namely in auxiliary current transformer module running, when drive plate 21, temperature relay KA1, current sensor SC1, SC2, SC3 or external communication interface provide fault-signal, control board 22 will block SPWM ripple, auxiliary current transformer module quits work, control board 22 will carry out self-inspection, after fault-signal disappears, control board 22 sends pulse, and auxiliary current transformer module is started working.Drive plate 21 can export the pulse that six tunnels triggering IGBT turn on and off, and interlocks the pulse triggered between inversion unit 13 upper and lower bridge arm, and the IGBT of upper and lower bridge arm can not be damaged because of straight-through.The auxiliary current transformer module that the embodiment of the present invention provides is when being short-circuited fault, fast response time, just protects when short circuit current is very little, the effective guarantee safety of IGBT constant power semiconductor device self.
In the present embodiment, between rectification unit 12 and Support Capacitor C, and between Support Capacitor C and inversion unit 13 (copper bar 130 of output), be provided with the composite bus bar 4 of laminated structure, as shown in Figure 5.Preferably, the composite bus bar 4 of laminated structure can comprise positive busbar, negative busbar and insulating barrier, and insulating barrier is arranged between positive busbar and negative busbar.
Traditional copper bar connects the stray inductance that easily generation is larger, be because when IGBT turns off, stray inductance can produce the voltage of a Ls × Is, reacts on the IGBT that will turn off with the reverse shutoff voltage one of main circuit, this makes voltage that IGBT bears excessive, and may damage IGBT.And by the composite bus bar 4 of laminated structure, rectification unit 12, Support Capacitor C, inversion unit 13 and output copper bar thereof are connected, by adding the mode of insulating barrier between positive and negative busbar, positive and negative busbar is stacked, composite bus bar 4 itself is made to form the structure of a similar capacity plate antenna, by in and copper bar produce stray inductance, the stray inductance of composite bus bar 4 is greatly reduced.
The auxiliary current transformer module that the embodiment of the present invention provides not only environmental protection, clean, loss is low, also make output voltage more stable, fluctuation is less, effectively reduce loss, decrease failure rate, and reduce the volume of auxiliary current transformer module, its volume can reach 460mm × 367mm × 280mm.Auxiliary current transformer module is integrated with control, drives and power section; and be integrated with defencive function; make the integrated level of auxiliary current transformer module higher; make only to need to provide control power supply and main power source just can complete the function of AC power being carried out variable voltage variable frequency to auxiliary current transformer module; independently can also realize function when running simultaneously; be convenient to control system, and for the maintenance of auxiliary current transformer module and replacing.By integrated defencive function, fault, electric current is excessive, temperature is too high protection are carried out to auxiliary current transformer module, thus the safety of protection auxiliary current transformer module and whole system.Auxiliary current transformer module inside adopts terrace composite bus bar to be connected, and the stray inductance of auxiliary current transformer module itself is reduced greatly, it also avoid because surge voltage is excessive, to the infringement of device for power switching.The reasonable in design of auxiliary current transformer module high integration of the present invention, reliability is high, perfect in shape and function, is convenient to maintenance and transplants.What is more important, by arranging precharge loop, the intermediate voltage of auxiliary current transformer module can be regulated, under the prerequisite not by devices such as contactors, auxiliary current transformer module can be started when small area analysis, and after startup completes, return to running current, thus the operating state of control auxiliary current transformer module that can be convenient.
Although execution mode disclosed in this invention is as above, the execution mode that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technical staff in any the technical field of the invention; under the prerequisite not departing from spirit and scope disclosed in this invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (10)
1. an auxiliary current transformer module, is characterized in that, comprises main circuit and control circuit;
Described main circuit comprises precharge loop, rectification unit, Support Capacitor and inversion unit, external communication voltage charges to described Support Capacitor through described precharge loop, external communication voltage changes the direct voltage on described Support Capacitor into through described rectification unit afterwards, then changes direct voltage into alternating voltage through described inversion unit;
Described control circuit is used for exporting the control signal opened or turn off between the gate pole and emitter of the device for power switching in described inversion unit.
2. auxiliary current transformer module as claimed in claim 1, it is characterized in that, described precharge loop comprises pre-charge resistance and charging panel;
Described charging panel is used for external communication voltage is charged to described Support Capacitor through described pre-charge resistance, also for driving opening of the switching tube in described rectification unit.
3. auxiliary current transformer module as claimed in claim 1, it is characterized in that, described control circuit comprises drive plate, control board and power panel;
Described power panel is connected with control board with described drive plate respectively, and provides power supply for described drive plate and control board;
Described control board is connected with described drive plate, the control signal that described control board is opened by described drive plate to output between the gate pole and emitter of the device for power switching in described inversion unit or turned off.
4. the auxiliary current transformer module as described in any one of claims 1 to 3, is characterized in that, described rectification unit is the three-phase commutation bridge of thyristor composition.
5. the auxiliary current transformer module as described in any one of Claims 1-4, is characterized in that, the device for power switching in described inversion unit is IGBT.
6. the auxiliary current transformer module as described in any one of claim 1 to 5, is characterized in that, the customization electric capacity that described Support Capacitor is as a whole.
7. the auxiliary current transformer module as described in any one of claim 1 to 6, is characterized in that, described main circuit is provided with radiator, and described radiator is provided with temperature relay.
8. auxiliary current transformer module as claimed in claim 7, it is characterized in that, described radiator is Section Bar Heat Sinks.
9. the auxiliary current transformer module as described in any one of claim 1 to 8, is characterized in that, between described rectification unit and described Support Capacitor, and is provided with the composite bus bar of laminated structure between described Support Capacitor and described inversion unit.
10. auxiliary current transformer module as claimed in claim 9, is characterized in that, the composite bus bar of described laminated structure comprises positive busbar, negative busbar and insulating barrier, and described insulating barrier is arranged between described positive busbar and negative busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614495.7A CN104348367A (en) | 2014-11-04 | 2014-11-04 | Auxiliary converter module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614495.7A CN104348367A (en) | 2014-11-04 | 2014-11-04 | Auxiliary converter module |
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| Publication Number | Publication Date |
|---|---|
| CN104348367A true CN104348367A (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410614495.7A Pending CN104348367A (en) | 2014-11-04 | 2014-11-04 | Auxiliary converter module |
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| CN (1) | CN104348367A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655836A (en) * | 2016-11-14 | 2017-05-10 | 中车株洲电力机车研究所有限公司 | Current transformer and current transformer module |
| CN107395027A (en) * | 2017-07-14 | 2017-11-24 | 中车永济电机有限公司 | A kind of ocean fishing vessel electric propulsion current transformer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269166A (en) * | 2013-05-30 | 2013-08-28 | 广州市伟达力电器有限公司 | Frequency converter with pre-charging protection function |
| CN203554304U (en) * | 2013-11-04 | 2014-04-16 | 南车株洲电力机车研究所有限公司 | Auxiliary converter module for diesel locomotive |
| JP2014087204A (en) * | 2012-10-25 | 2014-05-12 | Toyota Industries Corp | Motor inverter |
-
2014
- 2014-11-04 CN CN201410614495.7A patent/CN104348367A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014087204A (en) * | 2012-10-25 | 2014-05-12 | Toyota Industries Corp | Motor inverter |
| CN103269166A (en) * | 2013-05-30 | 2013-08-28 | 广州市伟达力电器有限公司 | Frequency converter with pre-charging protection function |
| CN203554304U (en) * | 2013-11-04 | 2014-04-16 | 南车株洲电力机车研究所有限公司 | Auxiliary converter module for diesel locomotive |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655836A (en) * | 2016-11-14 | 2017-05-10 | 中车株洲电力机车研究所有限公司 | Current transformer and current transformer module |
| CN107395027A (en) * | 2017-07-14 | 2017-11-24 | 中车永济电机有限公司 | A kind of ocean fishing vessel electric propulsion current transformer |
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Application publication date: 20150211 |