CN203434881U - Interconnection wire-free parallel power supply control system of auxiliary current transformers of motor train unit - Google Patents
Interconnection wire-free parallel power supply control system of auxiliary current transformers of motor train unit Download PDFInfo
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- CN203434881U CN203434881U CN201320569837.9U CN201320569837U CN203434881U CN 203434881 U CN203434881 U CN 203434881U CN 201320569837 U CN201320569837 U CN 201320569837U CN 203434881 U CN203434881 U CN 203434881U
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Abstract
The utility model relates to an interconnection wire-free parallel power supply control system of auxiliary current transformers of a motor train unit. The system comprises an auxiliary current transformer power circuit and an auxiliary current transformer control circuit. The auxiliary current transformer power circuit includes a plurality of inverter power modules connected in parallel; and each auxiliary current transformer module consists of an inverter, a potential transformer and an LC filter. And the auxiliary current transformer control circuit includes a phase-locking synchronization control unit, an instantaneous power calculation unit, a droop control unit, a voltage closed-loop control unit, and an intermediate feedforward control unit. With the system, parallel connection of the multiple auxiliary current transformers of the motor train unit is realized; and thus redundancy and reliability of the auxiliary current transformers are improved.
Description
Technical field
The utility model relates to a kind of rail truck auxiliary power supply system, and specifically, relating to a kind of motor train unit AuCT has interconnection line parallel operation control system.
Background technology
AuCT is one of rail truck basic element of character, plays to power consumption equipments such as the air-conditioning on train, electric water boilers, and stable three-phase, single phase alternating current power supply is provided, improve vehicle riding comfort can effect.AuCT is mainly comprised of inverter, charger and storage battery, relates generally to three-phase inverter here.
At present, it is independently-powered that the general employing of motor train unit respectively saves the AuCT in compartment.Along with the increase day by day of power consumption equipment on car, the capacity of compartment AuCT needs corresponding increase, when AuCT fault, needs adjacent car to change power supply by contactor, and redundancy, the reliability of AuCT are lower.By the AuCT parallel connection in each joint compartment, can effectively improve reliability and the redundancy of AuCT.Be parallel with two kinds of modes, a kind of is the parallel connection that has interconnection line, and another is the parallel connection of no control interconnection.
Wireless Parallel Control, have another name called droop control, adopt external characteristic droop method, each AuCT only detects active power of output and the reactive power of this unit, output voltage and the frequency of by certain algorithm, adjusting this unit realize current-sharing, compared to there being interconnection line to control, can not introduce outside noise and interference, greatly improved reliability and the redundancy of parallel system.
Utility model content
The purpose of this utility model is to provide a kind of simple in structure, reliable motor train unit AuCT no control interconnection parallel operation control system.
The technical solution of the utility model is: a kind of motor train unit AuCT no control interconnection parallel operation control system, comprise AuCT power circuit and AuCT control circuit, AuCT power circuit comprises a plurality of inverter power modules that are connected in parallel, and each AuCT module is comprised of the inverter being mutually connected in series, transformer and LC filter; AuCT control circuit Phase-Locked Synchronous control unit, instantaneous power computing unit, droop control unit, voltage close loop control unit and intermediate voltage feedfoward control unit, the input of Phase-Locked Synchronous control unit connects AuCT power circuit ac bus, gather three-phase bus magnitude of voltage, the voltage output end of Phase-Locked Synchronous control unit connects the input of droop control unit, a phase angle output part for Phase-Locked Synchronous control unit is connected to inverter, and another part feeds back to Phase-Locked Synchronous control unit; The input of instantaneous power computing unit connects the output of LC filter, gather the electric current of three-phase circuitry phase, the input of instantaneous power computing unit also connects AuCT power circuit ac bus, gather three-phase bus magnitude of voltage, the output of instantaneous power computing unit connects the input of droop control unit; The output of droop control unit connects the input of voltage close loop control unit, and the output of voltage close loop control unit connects inverter; The input of intermediate voltage feedfoward control unit connects the DC bus end of AuCT module, and the output of intermediate voltage feedfoward control unit connects the input of voltage close loop control unit.
The beneficial effects of the utility model are:
The utility model has been realized the parallel connection of a plurality of AuCTs of motor train unit, has increased redundancy, the reliability of AuCT.This control system is used voltage close loop to control, and controls complexity and relatively reduces, and controls reliability and improves; This control system can realize the accurate Phase-Locked Synchronous of each AuCT power circuit to busbar voltage, and operational reliability in parallel is high.The voltage of the use in this control, PQ all adopt instantaneous value to control, and in general PQ droop control, introduce intermediate voltage feedfoward control, and dynamic property is good.
Accompanying drawing explanation
Accompanying drawing 1 is motor train unit AuCT no control interconnection parallel operation system configuration schematic diagram.
Accompanying drawing 2 is the utility model control system structural representation.
Embodiment
Below in conjunction with Figure of description, specific embodiment of the utility model is elaborated.
As shown in Figures 1 and 2
Motor train unit AuCT no control interconnection parallel operation control system, comprise AuCT power circuit and AuCT control circuit, AuCT power circuit comprises a plurality of inverter power modules that are connected in parallel, and each AuCT module is comprised of the inverter being mutually connected in series, transformer and LC filter; AuCT control circuit Phase-Locked Synchronous control unit 1, instantaneous power computing unit 2, droop control unit 3, voltage close loop control unit 4 and intermediate voltage feedfoward control unit 5, the input of Phase-Locked Synchronous control unit 1 connects AuCT power circuit ac bus, gather three-phase bus magnitude of voltage, the voltage output end of Phase-Locked Synchronous control unit 1 connects the input of droop control unit, a phase angle output part for Phase-Locked Synchronous control unit 1 is connected to inverter, and another part feeds back to Phase-Locked Synchronous control unit 1; The input of instantaneous power computing unit 2 connects the output of LC filter, gather the electric current of three-phase circuitry phase, the input of instantaneous power computing unit 2 also connects AuCT power circuit ac bus, gather three-phase bus magnitude of voltage, the output of instantaneous power computing unit 2 connects the input of droop control unit 3; The output of droop control unit 3 connects the input of voltage close loop control unit, and the output of voltage close loop control unit 4 connects inverter; The input of intermediate voltage feedfoward control unit 5 connects the DC bus end of AuCT module, and the output of intermediate voltage feedfoward control unit 5 connects the input of voltage close loop control unit 4.
During system works, Phase-Locked Synchronous control unit 1 and instantaneous power computing unit 2 gather respectively three-phase alternating current busbar voltage, u
a, u
band u
c, Phase-Locked Synchronous control unit utilizes u
a, u
b, u
cwith reference frequency f
*, calculate phase angle regulated value θ and sagging voltage-regulation value U
0, phase angle regulated value feeds back to Phase-Locked Synchronous control unit and inverter, for adjusting the angular displacement of inverter phase; Instantaneous power computing unit 2 gathers the output of LC filter, gathers the current i of three-phase circuitry phase
a, i
band i
c, utilize the current i of three-phase circuitry phase
a, i
band i
cand three-phase alternating current busbar voltage, u
a, u
band u
ccalculate active-power P and the reactive power Q of inverter,, droop control unit 3 calculates voltage-regulation amount U in conjunction with P, Q
*, intermediate voltage feedfoward control unit 5 gathers the voltage U of inverter DC bus end
cpa, and calculate intermediate voltage feedfoward control output U
c, voltage close loop control unit 4 is according to voltage-regulation amount U
*with intermediate voltage feedfoward control output U
c, finally calculate contravarianter voltage regulated value U, according to contravarianter voltage regulated value U and phase angle regulated value θ, regulate inverter output, guarantee each inverter unit steady operation.
Claims (1)
1. a motor train unit AuCT no control interconnection parallel operation control system, it is characterized in that: comprise AuCT power circuit and AuCT control circuit, AuCT power circuit comprises a plurality of inverter power modules that are connected in parallel, and each AuCT module is comprised of the inverter being mutually connected in series, transformer and LC filter; AuCT control circuit Phase-Locked Synchronous control unit, instantaneous power computing unit, droop control unit, voltage close loop control unit and intermediate voltage feedfoward control unit, the input of Phase-Locked Synchronous control unit connects AuCT power circuit ac bus, gather three-phase bus magnitude of voltage, the voltage output end of Phase-Locked Synchronous control unit connects the input of droop control unit, a phase angle output part for Phase-Locked Synchronous control unit is connected to inverter, and another part feeds back to Phase-Locked Synchronous control unit; The input of instantaneous power computing unit connects the output of LC filter, gather the electric current of three-phase circuitry phase, the input of instantaneous power computing unit also connects AuCT power circuit ac bus, gather three-phase bus magnitude of voltage, the output of instantaneous power computing unit connects the input of droop control unit; The output of droop control unit connects the input of voltage close loop control unit, and the output of voltage close loop control unit connects inverter; The input of intermediate voltage feedfoward control unit connects the DC bus end of AuCT module, and the output of intermediate voltage feedfoward control unit connects the input of voltage close loop control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569837.9U CN203434881U (en) | 2013-09-13 | 2013-09-13 | Interconnection wire-free parallel power supply control system of auxiliary current transformers of motor train unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569837.9U CN203434881U (en) | 2013-09-13 | 2013-09-13 | Interconnection wire-free parallel power supply control system of auxiliary current transformers of motor train unit |
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| Publication Number | Publication Date |
|---|---|
| CN203434881U true CN203434881U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320569837.9U Expired - Fee Related CN203434881U (en) | 2013-09-13 | 2013-09-13 | Interconnection wire-free parallel power supply control system of auxiliary current transformers of motor train unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457494A (en) * | 2013-09-13 | 2013-12-18 | 青岛四方车辆研究所有限公司 | System and method for parallel control of auxiliary converters of motor train unit in the absence of interconnecting lines |
| CN106451755A (en) * | 2016-12-13 | 2017-02-22 | 中车株洲电力机车有限公司 | Air compressor control circuit of storage battery powered electrical power engineering vehicle |
| US10008854B2 (en) | 2015-02-19 | 2018-06-26 | Enphase Energy, Inc. | Method and apparatus for time-domain droop control with integrated phasor current control |
| CN109552047A (en) * | 2017-09-26 | 2019-04-02 | 株洲中车时代电气股份有限公司 | A kind of secondary power system for subway train |
-
2013
- 2013-09-13 CN CN201320569837.9U patent/CN203434881U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457494A (en) * | 2013-09-13 | 2013-12-18 | 青岛四方车辆研究所有限公司 | System and method for parallel control of auxiliary converters of motor train unit in the absence of interconnecting lines |
| CN103457494B (en) * | 2013-09-13 | 2016-03-23 | 中车青岛四方车辆研究所有限公司 | Motor train unit AuCT arcless breaking control system and control method |
| US10008854B2 (en) | 2015-02-19 | 2018-06-26 | Enphase Energy, Inc. | Method and apparatus for time-domain droop control with integrated phasor current control |
| US10951037B2 (en) | 2015-02-19 | 2021-03-16 | Enphase Energy, Inc. | Method and apparatus for time-domain droop control with integrated phasor current control |
| US11355936B2 (en) | 2015-02-19 | 2022-06-07 | Enphase Energy, Inc. | Method and apparatus for time-domain droop control with integrated phasor current control |
| CN106451755A (en) * | 2016-12-13 | 2017-02-22 | 中车株洲电力机车有限公司 | Air compressor control circuit of storage battery powered electrical power engineering vehicle |
| CN109552047A (en) * | 2017-09-26 | 2019-04-02 | 株洲中车时代电气股份有限公司 | A kind of secondary power system for subway train |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266000 Shandong province Qingdao City, Ruichang Road No. 231 Patentee after: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. Address before: 266000 Shandong province Qingdao City, Ruichang Road No. 231 Patentee before: QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20210913 |