CN207396621U - A kind of detection device of solid-state transformer - Google Patents

A kind of detection device of solid-state transformer Download PDF

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Publication number
CN207396621U
CN207396621U CN201621477090.4U CN201621477090U CN207396621U CN 207396621 U CN207396621 U CN 207396621U CN 201621477090 U CN201621477090 U CN 201621477090U CN 207396621 U CN207396621 U CN 207396621U
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China
Prior art keywords
bridges
unit
fan
detection device
module
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Expired - Fee Related
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CN201621477090.4U
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Chinese (zh)
Inventor
向增
陈峻岭
李建霖
胡小军
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ZHUHAI WANLIDA ELECTRICAL AUTOMATION Co Ltd
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ZHUHAI WANLIDA ELECTRICAL AUTOMATION Co Ltd
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Priority to CN201621477090.4U priority Critical patent/CN207396621U/en
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Abstract

A kind of detection device of solid-state transformer is provided in the utility model embodiment, two power cells can be tested simultaneously by the detection device, save the time, and the detection device is full-featured, experiment is provided to overall design to support, and the detection device can work(at low voltage, test high-tension apparatus, it is ensured that life safety.

Description

A kind of detection device of solid-state transformer
Technical field
This application involves electronic technology field more particularly to a kind of detection devices of solid-state transformation.
Background technology
In nearest 10 years, a kind of high power, multifunction converter are named as solid-state transformer (solid-state Transformer, SST), it is also referred to as electric power electric transformer (power electronic transformer, PET) or ten thousand Energy transformer (intelligent universal transformer), has caused extensive concern, and what is be extensively studied matches somebody with somebody Electric system.
The institute that solid-state transformer not only possesses traditional transformer is functional, also possesses voltage adjusting, and reactive-load compensation, harmonic wave is controlled The functions such as reason, frequency transformation, it is possible to provide multiport (different voltages, exchange, direct current, different frequency), and manage, monitor these ends Mouthful, the function of completion energy source router.
Current most of solid-state transformers are all cascaded using H bridges, and each H bridges make a power cell, power cell Performance determines the performance of whole system.Because power cell volume is larger, heavier-weight (50kg or so), if not after tested with regard to group Complete machine (three-phase 10kV generally needs 36 power cells) to be dressed up, is pinpointed the problems in complete machine, handling are very troublesome, and to first Upper electricity operation brings equipment and personal safety.
Utility model content
The utility model embodiment provides a kind of detection device of solid-state transformer, to solve in the prior art to whole When machine is detected, if pinpointed the problems in complete machine, the problem of very troublesome is loaded and unloaded.
Its specific technical solution is as follows:
A kind of detection device of solid-state transformer, which is characterized in that described device includes:Control unit, first module, Unit two, the first fan, the second fan, first switch, second switch, transformer, rectifier bridge, detection unit, wherein,
Described control unit is connected respectively with the first module and the second unit;
The detection unit is connected respectively with the first module and the second unit;
First fan, is connected with the first switch, and first fan is used to drop the first module Temperature;
Second fan, is connected with the second switch, and second fan is used to drop the second unit Temperature;
The transformer, is connected with one end with power supply, and the other end is connected with the rectifier bridge;
The rectifier bridge is connected with the second unit.
Optionally, the first module includes the first H bridges and the 2nd H bridges, and the first H bridges and the 2nd H bridges are simultaneously Connection;
The second unit includes the 3rd H bridges and the 4th H bridges, and the 3rd H bridges are in parallel with the 4th H bridges;
Wherein, the midpoint of the first branch of the 2nd H bridges is connected to the midpoint of the first branch of the 3rd H bridges.
Optionally, the detection unit includes:
Voltage sensor, the midpoint of the first branch of one end connection the 2nd H bridges of connection, the other end are connected to the 2nd H The midpoint of the second branch of bridge;
Current sensor, one end are connected to the midpoint of the second branch of the 2nd H bridges, and the other end is connected to the 3rd H bridges The second branch midpoint.
Optionally, the input terminal of the rectifier is connected with the power supply, the DC voltage cathode connection of the rectifier To one end of the 3rd H bridges, the DC voltage electrode of the rectifier is connected to the other end of the 3rd H bridges.
Optionally, the 4th H bridges of the first H bridges of the first module and second unit are used to send two frequencies 50Hz, amplitude is identical, and phase difference is the sine wave of a.
Optionally, described control unit, for controlling the unlatching and closing of first fan and the second fan.
The technical program provides a kind of detection device of solid-state transformer, which includes:Control unit, the first list Member, second unit, the first fan, the second fan, first switch, second switch, transformer, rectifier bridge, detection unit, wherein, Described control unit is connected respectively with the first module and the second unit;The detection unit, respectively with described Unit one and second unit connection;First fan, is connected with the first switch, first fan for pair The first module cools down;Second fan, is connected with the second switch, and second fan is used for described the Unit two cool down;The transformer, is connected with one end with power supply, and the other end is connected with the rectifier bridge;The rectifier bridge, It is connected with the second unit.Two power cells can be tested simultaneously by the detection device, save the time, and should Detection device is full-featured, and experiment is provided to overall design and is supported, and the detection device can work(at low voltage, experiment High-tension apparatus, it is ensured that life safety.
Description of the drawings
Fig. 1 is a kind of structure diagram of power electronic equipment detection device in the utility model embodiment.
Specific embodiment
A kind of detection device of solid-state transformer is provided in the utility model embodiment, which includes:Control unit, First module, second unit, the first fan, the second fan, first switch, second switch, transformer, rectifier bridge, detection unit, Wherein, described control unit is connected respectively with the first module and the second unit;The detection unit, respectively with The first module and second unit connection;First fan, is connected with the first switch, first fan For cooling down to the first module;Second fan, is connected with the second switch, second fan for pair The second unit cools down;The transformer, is connected with one end with power supply, and the other end is connected with the rectifier bridge;It is described Rectifier bridge is connected with the second unit.Two power cells can be tested simultaneously by the detection device, during saving Between, and the detection device is full-featured, and experiment is provided to overall design and is supported, and the detection device can be at low voltage Work(tests high-tension apparatus, it is ensured that life safety.
Technical solutions of the utility model are described in detail below by attached drawing and specific embodiment, it should be understood that Particular technique feature in the utility model embodiment and embodiment is the explanation to technical solutions of the utility model, without It is to limit, in the case where there is no conflict, the particular technique feature in the utility model embodiment and embodiment can be mutual group It closes.
It is as shown in Figure 1 a kind of detection device of solid-state transformer in the utility model embodiment, which includes:
First module 101, second unit 102, the first fan 103, the second fan 104, first switch 105, second switch 106th, transformer 107, rectifier bridge 108, detection unit 109, control unit 110, wherein,
Described control unit 110 is connected respectively with the first module 101 and the second unit 102;
The detection unit 109 is connected respectively with the first module 101 and the second unit 102;
First fan 103 is connected with the first switch 105, and first fan 103 is used for single to described first Member 101 cools down;
Second fan 104 is connected with the second switch 106, and second fan 104 is used for single to described second Member 102 cools down;
The transformer 107, is connected with one end with power supply, and the other end is connected with the rectifier bridge 108;
The rectifier bridge 108 is connected with the second unit 102.
Further, in the utility model embodiment, the first module 101 includes the first H bridges and the 2nd H bridges, institute It is in parallel with the 2nd H bridges to state the first H bridges;
The second unit 102 includes the 3rd H bridges and the 4th H bridges, and the 3rd H bridges are in parallel with the 4th H bridges;
Wherein, the midpoint of the first branch of the 2nd H bridges is connected to the midpoint of the first branch of the 3rd H bridges.
Further, in the utility model embodiment, the detection unit 109 includes:
Voltage sensor, the midpoint of the first branch of one end connection the 2nd H bridges of connection, the other end are connected to the 2nd H The midpoint of the second branch of bridge;
Current sensor, one end are connected to the midpoint of the second branch of the 2nd H bridges, and the other end is connected to the 3rd H bridges The second branch midpoint.
Further, in the utility model embodiment, the input terminal of the rectifier 108 is connected with the power supply, described The DC voltage cathode of rectifier 108 is connected to one end of the 3rd H bridges, and the DC voltage electrode of the rectifier is connected to The other end of the 3rd H bridges.
Further, in the utility model embodiment, the first H bridges of the first module 101 and second unit 102 For 4th H bridges for sending two frequency 50Hz, amplitude is identical, and phase difference is the sine wave of a.
Described control unit 101, for controlling the unlatching and closing of 103 and second fan 104 of the first fan.
The operation logic of the detection device is as follows:
Control unit 110 controls first module 102 and operation and stopping and the operating parameter of second unit 103;Control wind Machine start and stop;Monitoring insulated gate bipolar transistor temperature in real time;The size of current that liquidates is monitored in real time;Analysis DC voltage harmonic wave contains Amount.
1st, control unit 110 controls the first H bridges of first module 102 and second unit 103 and the 2nd H bridges to send two respectively A frequency 50Hz, amplitude is identical, the sine wave of phase difference α, electric current iL=(Asinx-Asin (x- α))/XL on reactor, Understand that α is bigger, iL is bigger, adjusts α sizes, and power cell can be made to carry out rated current experiment and overload test.
2nd, control unit 110 controls the switch of wind turbine, and temperature rise test can be done to power cell, and adjusting wind speed makes power list First Wen Sheng reaches balance, and complete machine cooling blower is chosen and provides accurate reference.
3rd, sampled according to VT and LEM, the loss of the active of second unit, i.e. power cell can be calculated, it can be estimated that whole Machine is lost.
4th, DC voltage on thin-film capacitor is taken, Fourier analysis is carried out to it, second harmonic size is observed, determines capacitance Whether capacity is chosen properly.
For to sum up, two power cells can be tested simultaneously by the detection device, save the time, and the inspection It is comprehensive to survey apparatus function, experiment is provided to overall design and is supported, and the detection device can work(, experiment be high at low voltage Press equipment, it is ensured that life safety.
For to sum up, in the utility model embodiment, SD card is used in the power electronic equipment detection device, the electricity SD card in power electronic equipment can reuse, easy to use, at low cost, and data recording speed is promoted to millisecond Grade improves the speed of data record.
Although the preferred embodiment of the application has been described, one of ordinary skilled in the art once knows substantially Creative concept can then make these embodiments other change and modification.So appended claims are intended to be construed to wrap It includes preferred embodiment and falls into all change and modification of the application scope.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application God and scope.In this way, if these modifications and variations of the application belong to the scope of the application claim and its equivalent technologies Within, then the application is also intended to comprising including these modification and variations.

Claims (4)

1. a kind of detection device of solid-state transformer, which is characterized in that described device includes:Control unit, first module, second Unit, the first fan, the second fan, first switch, second switch, transformer, rectifier bridge, detection unit, wherein,
Described control unit is connected respectively with the first module and the second unit;
The detection unit is connected respectively with the first module and the second unit;
First fan, is connected with the first switch, and first fan is used to cool down to the first module;
Second fan, is connected with the second switch, and second fan is used to cool down to the second unit;
The transformer, is connected with one end with power supply, and the other end is connected with the rectifier bridge;
The rectifier bridge is connected with the second unit.
2. device as described in claim 1, which is characterized in that the first module includes the first H bridges and the 2nd H bridges, institute It is in parallel with the 2nd H bridges to state the first H bridges;
The second unit includes the 3rd H bridges and the 4th H bridges, and the 3rd H bridges are in parallel with the 4th H bridges;
Wherein, the midpoint of the first branch of the 2nd H bridges is connected to the midpoint of the first branch of the 3rd H bridges.
3. device as claimed in claim 2, which is characterized in that the detection unit includes:
Voltage sensor, the midpoint of the first branch of one end connection the 2nd H bridges of connection, the other end are connected to the second of the 2nd H bridges The midpoint of branch;
Current sensor, one end are connected to the midpoint of the second branch of the 2nd H bridges, and the other end is connected to the of the 3rd H bridges The midpoint of two branches.
4. device as claimed in claim 3, which is characterized in that the input terminal of the rectifier is connected with the power supply, described The DC voltage cathode of rectifier is connected to one end of the 3rd H bridges, and the DC voltage electrode of the rectifier is connected to described The other end of three H bridges.
CN201621477090.4U 2016-12-30 2016-12-30 A kind of detection device of solid-state transformer Expired - Fee Related CN207396621U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621477090.4U CN207396621U (en) 2016-12-30 2016-12-30 A kind of detection device of solid-state transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621477090.4U CN207396621U (en) 2016-12-30 2016-12-30 A kind of detection device of solid-state transformer

Publications (1)

Publication Number Publication Date
CN207396621U true CN207396621U (en) 2018-05-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109240195A (en) * 2018-10-19 2019-01-18 江苏方天电力技术有限公司 Oil immersed type converter transformer cooling system control method and control system
CN110716157A (en) * 2019-11-26 2020-01-21 国网江苏省电力有限公司南通供电分公司 Power module test system of power electronic transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109240195A (en) * 2018-10-19 2019-01-18 江苏方天电力技术有限公司 Oil immersed type converter transformer cooling system control method and control system
CN109240195B (en) * 2018-10-19 2021-06-01 江苏方天电力技术有限公司 Control method and control system for cooling system of oil-immersed converter transformer
CN110716157A (en) * 2019-11-26 2020-01-21 国网江苏省电力有限公司南通供电分公司 Power module test system of power electronic transformer

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Granted publication date: 20180522

Termination date: 20211230