CN202486227U - Back-to-back detection system suitable for chain type transverter - Google Patents
Back-to-back detection system suitable for chain type transverter Download PDFInfo
- Publication number
- CN202486227U CN202486227U CN2012200212815U CN201220021281U CN202486227U CN 202486227 U CN202486227 U CN 202486227U CN 2012200212815 U CN2012200212815 U CN 2012200212815U CN 201220021281 U CN201220021281 U CN 201220021281U CN 202486227 U CN202486227 U CN 202486227U
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- contactor
- power model
- transverter
- power module
- detection system
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Abstract
Provided is a back-to-back detection system suitable for a chain type transverter, relating to the transverter detection technology field and comprising a host computer, a controller and transverters. The controller realizes data communication connection with the host computer through network cables; and the transverters realize data communication connection with the controller through fibers. The characteristics lie in that the transverters comprise a first power module, a second power module, a three-phase rectifier bridge, a pressure regulator, a first contactor and a second contactor; initial three phase electricity successively passes through the first contactor and the pressure regulator and is connected to the three-phase rectifier bridge; the second contactor is connected between the first contactor and the pressure regulator and controls a fan; the three phase bridge realizes electric connection with the first power module; a reactor, a current Hall and a voltmeter are connected between the first power module and the second power module. The beneficial effects lie in that a temperature sensor is arranged on sides of IGBT pipes, and a voltmeter is provided between a power module and a direct current bus to realize effective monitoring on work circuit voltages and temperatures of a whole chain type transverter.
Description
Technical field
The utility model relates to the detection system technical field of transverter, is specifically related to a kind of detection system back-to-back that is applicable to chain-type inverter.
Background technology
Chain-type inverter is also referred to as H bridge series connection transverter; This transverter is in series by the interchange output of a plurality of chain link modules (or claiming single-phase H bridge-type transverter module); Can be widely used in the various converter plants, like high voltage variable frequency speed regulator, novel STATCOM, generation of electricity by new energy inverter, dynamic electric voltage recovery device, active filter etc.Because the application scenario that chain-type inverter is usually used in exporting higher alternating voltage makes its output current measure and the output current protection becomes difficult.When adopting Hall current sensor to measure its output current, receive the restriction of the former secondary dielectric voltage withstand of Hall current sensor, can't directly measure the output current of the chain-type inverter of high voltage application scenario.And it is higher to adopt high-tension current inductor to cause measuring cost.In addition, this output current possibly be used for FEEDBACK CONTROL, needs to adopt very high sampling rate.Therefore, need to seek a kind of new measurement and output current protective device.
The utility model content
The purpose of the utility model is to provide a kind of detection system back-to-back that is applicable to chain-type inverter.
The technical matters that the utility model solved adopts following technical scheme to realize:
Be applicable to the detection system back-to-back of chain-type inverter; The transverter that comprises host computer, controller and a plurality of parallel connections; Said controller realizes that through netting twine and said host computer data communication is connected; Said transverter realizes that through optical fiber and said controller data communication is connected; It is characterized in that: said transverter comprises: first power model, second power model, three-phase commutation bridge, pressure regulator, first contactor and second contactor; Initial three-phase electricity is successively through inserting said three-phase commutation bridge behind said first contactor and the pressure regulator; Said second contactor is connected between said first contactor and the said pressure regulator and controls blower fan, and said three-phase commutation bridge is realized being electrically connected with said first power model, said first power model with also be connected to reactor, current Hall and voltage table between said second power model is electrically connected.
Said first power model and second power model include four IGBT pipes and an electric capacity.
In said IGBT pipe outlet side one temperature sensor is installed also.
Between said three-phase commutation bridge and the said first power model wire connecting, also be connected to a voltage table.
The beneficial effect that the utlity model has is: through in IGBT pipe side temperature sensor being set; Realization is to the effective monitoring of transverter working temperature; Through connecing voltage table increasing between power model and between dc bus, realize effective monitoring to whole chain-type inverter operation circuit voltage.
Description of drawings
Fig. 1 is the utility model: the electrical principle structural representation that is applicable to the detection system back-to-back of chain-type inverter;
Fig. 2 is the utility model: the system architecture synoptic diagram that is applicable to the detection system back-to-back of chain-type inverter.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Embodiment: with reference to Fig. 1-2; Be applicable to the detection system back-to-back of chain-type inverter; The transverter 3 that comprises host computer 1, controller 2 and a plurality of parallel connections; Controller 2 realizes that with host computer 1 data communication is connected through netting twine, and transverter 3 passes through optical fiber and is connected with controller 2 realization data communication, and transverter 3 comprises: first power model 4, second power model 5, three-phase commutation bridge 6, pressure regulator 7, first contactor 8 and second contactor 9; Initial three-phase electricity inserts three-phase commutation bridge 6 through first contactor 8 and pressure regulator 7 backs successively; Second contactor 9 is connected between first contactor 8 and the pressure regulator 7 and controls blower fan 10, and three-phase commutation bridge 6 is realized being electrically connected with first power model 4, first power model 4 with also be connected to reactor 11, current Hall 12 and voltage table 13 between second power model 5 is electrically connected.
Manage 14 outlet sides at IGBT temperature sensor 16 also is installed.
Between three-phase commutation bridge 6 and first power model, 4 wire connecting, also be connected to a voltage table 17.
More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (4)
1. be applicable to the detection system back-to-back of chain-type inverter; The transverter that comprises host computer, controller and a plurality of parallel connections; Said controller realizes that through netting twine and said host computer data communication is connected; Said transverter realizes that through optical fiber and said controller data communication is connected; It is characterized in that: said transverter comprises: first power model, second power model, three-phase commutation bridge, pressure regulator, first contactor and second contactor; Initial three-phase electricity is successively through inserting said three-phase commutation bridge behind said first contactor and the said pressure regulator; Said second contactor is connected between said first contactor and the said pressure regulator and controls blower fan, and said three-phase commutation bridge is realized being electrically connected with said first power model, said first power model with also be connected to reactor, current Hall and voltage table between said second power model is electrically connected.
2. the detection system back-to-back that is applicable to chain-type inverter according to claim 1 is characterized in that: said first power model and second power model include four IGBT pipes and an electric capacity.
3. the detection system back-to-back that is applicable to chain-type inverter according to claim 2 is characterized in that: in said IGBT pipe outlet side one temperature sensor is installed also.
4. the detection system back-to-back that is applicable to chain-type inverter according to claim 1 is characterized in that: between said three-phase commutation bridge and the said first power model wire connecting, also be connected to a voltage table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200212815U CN202486227U (en) | 2012-01-17 | 2012-01-17 | Back-to-back detection system suitable for chain type transverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200212815U CN202486227U (en) | 2012-01-17 | 2012-01-17 | Back-to-back detection system suitable for chain type transverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486227U true CN202486227U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200212815U Expired - Fee Related CN202486227U (en) | 2012-01-17 | 2012-01-17 | Back-to-back detection system suitable for chain type transverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202486227U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467231A (en) * | 2014-08-22 | 2016-04-06 | 比亚迪股份有限公司 | To-be-tested converter grid-connected test method and to-be-tested converter grid-connected test device |
-
2012
- 2012-01-17 CN CN2012200212815U patent/CN202486227U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467231A (en) * | 2014-08-22 | 2016-04-06 | 比亚迪股份有限公司 | To-be-tested converter grid-connected test method and to-be-tested converter grid-connected test device |
| CN105467231B (en) * | 2014-08-22 | 2018-09-07 | 比亚迪股份有限公司 | The grid-connected test method and device of transverter to be measured |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20170117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |