CN102497111A

CN102497111A - Fast-control power supply system based on IPM (intelligent power module) H-bridge cascade connection

Info

Publication number: CN102497111A
Application number: CN2011103685280A
Authority: CN
Inventors: 陈滋健
Original assignee: ECU ELECTRONICS INDUSTRIAL Co Ltd
Current assignee: ECU ELECTRONICS INDUSTRIAL Co Ltd
Priority date: 2011-11-20
Filing date: 2011-11-20
Publication date: 2012-06-13
Anticipated expiration: 2031-11-20
Also published as: CN102497111B

Abstract

The invention relates to a fast-control power supply system based on IPM (intelligent power module) H-bridge cascade connection. The fast-control power supply system comprises multiple subsystems which are connected with loads in parallel, wherein each subsystem consists of multiple inverting cabinets and output cabinets; an H-bridge inverting module is arranged in each inverting cabinet; multiple inverting cabinets are connected in series and then connected with the output cabinets; and the output cabinets are connected with IVC (independent virtual channel) coils of the loads. The fast-control power supply system disclosed by the invention adopts the H-bridge inverting modules to perform series-parallel connection so as to replace the conventional device series-parallel connection, meanwhile, multiple inverting cabinets and output cabinets are combined together to construct the subsystems, and finally, multiple subsystems form the fast-control power supply system to ensure that the expansibility of the fast-control power supply system is enhanced. Moreover, the inverting cabinets adopt the H-bridge inverting modules, so that the inverting cabinets are simple in structure, strong in safety and convenient to maintain.

Description

Fast control power-supply system based on the cascade of IPM module H bridge

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Technical field

The present invention relates to the power-supply system field, especially a kind of fast control power-supply system based on the cascade of IPM module H bridge.

Background technology

EAST superconducting tokamak device as country's " 95 " major scientific projects has great importance to the nuclear fusion experimental research work of China; And in order to realize the big plasma stability operation of elongating than position shape, the vertical displacement of plasma quick control power supply of development function admirable (being called for short fast control power supply) is very necessary.The maximum characteristics that EAST is controlled power supply soon are big electric current output and dynamic response faster; For this reason; Power supply has adopted many advanced technologies, like multilevel converter, phase shift PWM technology, inverter parallel technology, high power electronic equipment design and manufacturing technology etc.

The fast control power supply of operation is pressed to change a social system on the multi-level frequency conversion device basis in tradition and is formed at present; Adopt the AC/DC/AC structure; Comprise heterogeneous diode rectifier and carrier phase half-bridge three-level inverter two parts, in view of the great power of fast control power supply, employing be the series-parallel pattern of device.Along with the development of EAST nuclear fusion experimental research, the control power supply of seeking quickness has extensibility, and traditional device connection in series-parallel pattern can't meet the demands well.

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Summary of the invention

The object of the present invention is to provide a kind of extensibility strong, be convenient to safeguard, the fast control power-supply system based on the cascade of IPM module H bridge simple in structure.

For realizing above-mentioned purpose; The present invention has adopted following technical scheme: a kind of fast control power-supply system based on the cascade of IPM module H bridge; Comprise a plurality of subsystems that are attempted by in the load, described subsystem is made up of a plurality of inversion cabinets and output counter, is provided with H bridge inversion module in the inversion cabinet; Link to each other with output counter after the connection in series-parallel of a plurality of inversion cabinet, output counter is attempted by on the IVC coil of load.

Can know by technique scheme, the present invention adopt H bridge inversion module carry out connection in series-parallel with

Replace traditional device connection in series-parallel, adopt the combination of a plurality of inversion cabinets and output counter to make up subsystem simultaneously, finally make up fast control power-supply system, the autgmentability of fast control power-supply system is strengthened by a plurality of subsystems.In addition, because the inversion cabinet adopts H bridge inversion module, the structure of inversion cabinet is become simply, the fail safe enhancing, easy to maintenance.

Description of drawings

Fig. 1 is circuit theory diagrams of the present invention;

Fig. 2 is the circuit theory diagrams of H bridge inversion module among the present invention.

Embodiment

A kind of fast control power-supply system based on the cascade of IPM module H bridge; Comprise a plurality of subsystems 1 that are attempted by in the load 4; Described subsystem 1 is made up of with output counter 3 a plurality of inversion cabinets 2, is provided with H bridge inversion module in the inversion cabinet 2, links to each other with output counter 3 after a plurality of inversion cabinet 2 connection in series-parallel; Output counter 3 is attempted by on the IVC coil of load 4, and is as shown in Figure 1.A plurality of inversion cabinets 2 are through the copper bus-bar connection in series-parallel, are connected to the IVC coil of load 4 via output counter 3, isolate and device connection in series-parallel scheme than traditional single phase transformer, and the present invention makes that the autgmentability of fast control power supply is strengthened, maintainability is improved.

As shown in Figure 1, described inversion cabinet 2 is made up of three-phase isolation transformer T and H bridge inversion module, the termination 380V three-phase alternating current of three-phase isolation transformer T, and the other end of three-phase isolation transformer T is connected with H bridge inversion module; Described output counter 3 is made up of a plurality of equalizing reactors, a plurality of current sensor, voltage sensor AT and crow bar unit 5; One end of equalizing reactor all connects the output of H bridge inversion module; Connect with crow bar unit 5 after the other end parallel connection of equalizing reactor; Crow bar unit 5 connects the output of H bridge inversion module, and current sensor is connected with equalizing reactor, and voltage sensor AT is attempted by on the crow bar unit 5.Described current sensor is a Hall current sensor, and described voltage sensor AT is the Hall voltage transducer.Three-phase isolation transformer T plays the purpose that this power-supply system and 380V three-phase alternating current are isolated; H bridge inversion module is used for the three-phase main-frequency alternating current is converted into the alternating current of single-phase controllable frequency; Equalizing reactor is used to guarantee that the electric current of each branch road is consistent, and current sensor is used to measure branch current, and voltage sensor AT is used to measure the voltage of crow bar unit 5; Crow bar unit 5 is used under the situation of overvoltage, playing the effect of short-circuit protection.

Below in conjunction with Fig. 1 the present invention is further described.

The number of inversion cabinet 2 is 9 in the described subsystem 1; The input of first, second and third H bridge inversion module BR1, BR2, BR3 is connected with three-phase isolation transformer T respectively; Connect the output termination output counter 3 of first and third H bridge inversion module BR1, BR3 between first, second and third H bridge inversion module BR1, BR2, the BR3; Fourth, fifth, the input of six H bridge inversion module BR4, BR5, BR6 is connected with three-phase isolation transformer T respectively; Fourth, fifth, connect the output termination output counter 3 of the 4th, six H bridge inversion module BR4, BR6 between six H bridge inversion module BR4, BR5, the BR6; Seven, the input of eight, nine H bridge inversion module BR7, BR8, BR9 is connected with three-phase isolation transformer T respectively; Seven, connect between eight, nine H bridge inversion module BR7, BR8, the BR9; Seven, the output of the output termination output counter 3, the three of nine H bridge inversion module BR7, BR9, six, nine H bridge inversion module BR3, BR6, BR9 parallel connection.

The number of equalizing reactor, current sensor is 3 in the described output counter 3, the output of a termination the one H bridge inversion module BR1 of the first equalizing reactor L1, and the first equalizing reactor L1 connects with the first current sensor CT1; The output of a termination the 4th H bridge inversion module BR4 of the second equalizing reactor L2, the second equalizing reactor L2 connects with the second current sensor CT2; The output of a termination the 7th H bridge inversion module BR7 of the 3rd equalizing reactor L3, the 3rd equalizing reactor L3 connects with the 3rd current sensor CT3; The other end parallel connection of first, second and third current sensor CT1, CT2, CT3; The parallel connected end of this parallel end connection voltage sensor AT and crow bar unit 5, the output of the parallel connected end and the 3rd, six of voltage sensor AT and crow bar unit 5, nine H bridge inversion module BR3, BR6, BR9 links to each other.

As shown in Figure 2; Described H bridge inversion module comprises rectifier bridge 6 and first and second IPM assembly 7,8, and the input of rectifier bridge 6 links to each other with an end of fast acting fuse, and the other end of fast acting fuse links to each other with three-phase isolation transformer T; The output of rectifier bridge 6 links to each other with the input of an IPM assembly 7; Cross-over connection filter capacitor C1, C2 on the one IPM assembly 7, an IPM assembly 7 links to each other with the 2nd IPM assembly 8, cross-over connection filter capacitor C3, C4 on the 2nd IPM assembly 8.Described fast acting fuse is made up of first, second and third fuse F 1, F2, F3, the termination three-phase isolation transformer T of first, second and third fuse F 1, F2, F3, the input of another termination rectifier bridge 6 of first, second and third fuse F 1, F2, F3.First and second IPM assembly 7,8 plays the effect of inversion, the change of current, is alternating current with dc inverter.

A plurality of inversion cabinets 2 make up subsystem 1 through copper bus-bar connection in series-parallel and output counter 3 combinations, N the directly parallelly connected IVC coil that promptly can be connected to load 4 by public busbar of subsystem 1.Output counter 3 is the bridges that connect inversion cabinet 2 and load 4, and the AC side of each inversion assembly merges through equalizing reactor in output counter 3, and equalizing reactor adopts band centre cap mode, so that adjust parameter.For each branch road is provided with current sensor, simultaneously the total current after confluxing is carried out isolation measurement in the output counter 3, total output voltage of power-supply system is also measured at output counter 3.

In sum; The present invention adopts H bridge inversion module to carry out connection in series-parallel to replace traditional device connection in series-parallel; Adopt the combination of a plurality of inversion cabinets 2 and output counter 3 to make up subsystem 1 simultaneously, finally make up fast control power-supply system, the autgmentability of fast control power-supply system is strengthened by a plurality of subsystems 1.In addition, because inversion cabinet 2 adopts H bridge inversion modules, the structure of inversion cabinet 2 is become simply, the fail safe enhancing, easy to maintenance.

Claims

1. fast control power-supply system based on the cascade of IPM module H bridge; It is characterized in that: comprise a plurality of subsystems (1) that are attempted by in the load (4); Described subsystem (1) is made up of a plurality of inversion cabinets (2) and output counter (3); Be provided with H bridge inversion module in the inversion cabinet (2), link to each other with output counter (3) after a plurality of inversion cabinets (2) connection in series-parallel, output counter (3) is attempted by on the IVC coil of load (4).

2. the fast control power-supply system based on the cascade of IPM module H bridge according to claim 1; It is characterized in that: described inversion cabinet (2) is made up of three-phase isolation transformer T and H bridge inversion module; The termination 380V three-phase alternating current of three-phase isolation transformer T, the other end of three-phase isolation transformer T is connected with H bridge inversion module; Described output counter (3) is made up of a plurality of equalizing reactors, a plurality of current sensor, voltage sensor AT and crow bar unit (5); One end of equalizing reactor all connects the output of H bridge inversion module; Connect with crow bar unit (5) after the other end parallel connection of equalizing reactor; Crow bar unit (5) connects the output of H bridge inversion module, and current sensor is connected with equalizing reactor, and voltage sensor AT is attempted by on the crow bar unit (5).

3. the fast control power-supply system based on the cascade of IPM module H bridge according to claim 2; It is characterized in that: the number of inversion cabinet (2) is 9 in the described subsystem (1); The input of first, second and third H bridge inversion module BR1, BR2, BR3 is connected with three-phase isolation transformer T respectively; Connect the output termination output counter (3) of first and third H bridge inversion module BR1, BR3 between first, second and third H bridge inversion module BR1, BR2, the BR3; Fourth, fifth, the input of six H bridge inversion module BR4, BR5, BR6 is connected with three-phase isolation transformer T respectively; Fourth, fifth, connect the output termination output counter (3) of the 4th, six H bridge inversion module BR4, BR6 between six H bridge inversion module BR4, BR5, the BR6; Seven, the input of eight, nine H bridge inversion module BR7, BR8, BR9 is connected with three-phase isolation transformer T respectively; Seven, connect between eight, nine H bridge inversion module BR7, BR8, the BR9; Seven, the output termination output counter (3) of nine H bridge inversion module BR7, BR9, the output parallel connection of the 3rd, six, nine H bridge inversion module BR3, BR6, BR9.

4. the fast control power-supply system based on the cascade of IPM module H bridge according to claim 3; It is characterized in that: the number of the interior equalizing reactor of described output counter (3), current sensor is 3; The output of a termination the one H bridge inversion module BR1 of the first equalizing reactor L1, the first equalizing reactor L1 connects with the first current sensor CT1; The output of a termination the 4th H bridge inversion module BR4 of the second equalizing reactor L2, the second equalizing reactor L2 connects with the second current sensor CT2; The output of a termination the 7th H bridge inversion module BR7 of the 3rd equalizing reactor L3, the 3rd equalizing reactor L3 connects with the 3rd current sensor CT3; The other end parallel connection of first, second and third current sensor CT1, CT2, CT3; The parallel connected end of this parallel end connection voltage sensor AT and crow bar unit (5), the output of the parallel connected end and the 3rd, six of voltage sensor AT and crow bar unit (5), nine H bridge inversion module BR3, BR6, BR9 links to each other.

5. the fast control power-supply system based on the cascade of IPM module H bridge according to claim 2, it is characterized in that: described current sensor is a Hall current sensor, described voltage sensor AT is the Hall voltage transducer.

6. the fast control power-supply system based on the cascade of IPM module H bridge according to claim 2; It is characterized in that: described H bridge inversion module comprises rectifier bridge (6) and first and second IPM assembly (7,8); The input of rectifier bridge (6) links to each other with an end of fast acting fuse; The other end of fast acting fuse links to each other with three-phase isolation transformer T, and the output of rectifier bridge (6) links to each other with the input of an IPM assembly (7), and an IPM assembly (7) is gone up cross-over connection filter capacitor C1, C2; The one IPM assembly (7) links to each other with the 2nd IPM assembly (8), and the 2nd IPM assembly (8) is gone up cross-over connection filter capacitor C3, C4.

7. the fast control power-supply system based on the cascade of IPM module H bridge according to claim 6; It is characterized in that: described fast acting fuse is made up of first, second and third fuse F 1, F2, F3; The termination three-phase isolation transformer T of first, second and third fuse F 1, F2, F3, the input of another termination rectifier bridge (6) of first, second and third fuse F 1, F2, F3.