CN205280834U - Converter IGBT module temperature rise test circuit - Google Patents
Converter IGBT module temperature rise test circuit Download PDFInfo
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- CN205280834U CN205280834U CN201520975242.2U CN201520975242U CN205280834U CN 205280834 U CN205280834 U CN 205280834U CN 201520975242 U CN201520975242 U CN 201520975242U CN 205280834 U CN205280834 U CN 205280834U
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Abstract
The utility model discloses a converter IGBT module temperature rise test circuit has solved and has carried on there is the test time length when temperature rise is tested to converter IGBT module, and loss power is big, and the test receives the problem of equipment constraints. The utility model discloses PWM pulse signal is applyed to the tested module to the controller, only change the modulation factor and the phase angle of the every IGBT of group module, control mode is simple, can realize gaining merit and surveyed the IGBT module with idle by first group, second group is surveyed the closed loop mesocycle that IGBT module and load reactor are formed, energy circulation flow between two sets of IGBT modules and load reactor has been played, the electric wire netting only provides loss power part, very big reduction test cost, and PLC real time monitoring is surveyed the electric current of IGBT module, voltage, information such as temperature and trouble, the utility model discloses only need the outside dc bus that inserts, controller and load reactor all can adopt the inside device of converter, and the test condition is satisfied easily, take up an area of for a short time, and test platform builds weak point consuming time.
Description
Technical field
The present invention relates to the test circuit of a kind of frequency transformer module temperature rise, in particular to the temperature rise test circuit of a kind of frequency transformer IGBT module, mainly it is applicable to the power test of frequency transformer IGBT device, be used for investigating the temperature rise of the device such as IGBT, reactor.
Background technology
The main heating position of frequency transformer is in power device part, to the inversion part of the rectification of four-quadrant frequency converter and inversion part, two quadrant frequency transformers, current main flow frequency transformer all adopts IGBT module, IGBT, as voltage mode control device, has the advantages such as input resistance height, switch loss is little, break-make speed fast, operating frequency height, power capacity are big. the electric current generally flowing through IGBT is all bigger, switching frequency is higher, its loss is also bigger, if heat radiation structure design is unreasonable in frequency-charger cabinet, the heat that power device produces can not dissipate in time, the junction temperature making device is exceeded its design maximum, IGBT is caused to damage, this just needs after frequency transformer has assembled, the thermal characteristics of test I GBT module, to judge that can it meet design requirements, so a kind of simple and reliable power testing method is checking IGBT module essential step whether reasonable in design, and the big-power transducer for current main flow, especially four quadrant running frequency transformer, IGBT module quantity is a lot, when the temperature rise carrying out separately IGBT module is tested, generally provide high-power with high-power transformer between test carriage, carry out its temperature rise test, there is the test duration long, loss power is big, the shortcoming that measured power loss is all provided by electrical network, also there is the on-the-spot problem that required high-power transformer cannot be provided of tested person condition restriction in addition.
Summary of the invention
The present invention provides a kind of frequency transformer IGBT module temperature rise test circuit, solves that to there is the test duration when frequency transformer IGBT module carrying out temperature rise and tests long, and loss power is big, and test is subject to the problem of device-restrictive.
The present invention have employed following technical scheme to solve the problems of the technologies described above:
The test circuit of a kind of frequency transformer IGBT module temperature rise, comprise first group of tested IGBT module, 2nd group of tested IGBT module, load reactance device, first interface circuit plate, 2nd interface circuit plate and Industrial Control Computer, the DC side of the DC side of first group of tested IGBT module and the 2nd group of tested IGBT module links together, and linked together by common DC bus and external direct current power supply, the inverter side of the inverter side of first group of tested IGBT module and the 2nd group of tested IGBT module is linked together by common load reactance device, form a topological framework run back-to-back, electrical network is linked together by voltate regulator and rectification cabinet, the voltage output plus terminal of rectification cabinet and the just end of common DC bus link together, the negative terminal that the voltage of rectification cabinet exports negative terminal and common DC bus links together, DC support electric capacity just it is connected with between end and negative terminal at common DC bus, Industrial Control Computer is linked together by the pulse signal control end of the first interface circuit plate and first group of tested IGBT module, Industrial Control Computer is linked together by the pulse signal control end of the 2nd interface circuit plate and the 2nd group of tested IGBT module.
A testing method for frequency transformer IGBT module temperature rise, comprises the following steps:
The first step, the DC side of the DC side of first group of tested IGBT module and the 2nd group of tested IGBT module links together, and linked together by common DC bus and external direct current power supply, the inverter side of the inverter side of first group of tested IGBT module and the 2nd group of tested IGBT module is linked together by common load reactance device, form a topological framework run back-to-back, electrical network is linked together by voltate regulator and rectification cabinet, the voltage output plus terminal of rectification cabinet and the just end of common DC bus link together, the negative terminal that the voltage of rectification cabinet exports negative terminal and common DC bus links together, DC support electric capacity just it is connected with between end and negative terminal at common DC bus, Industrial Control Computer is linked together by the pulse signal control end of the first interface circuit plate and the first tested IGBT module, Industrial Control Computer is linked together by the pulse signal control end of the 2nd interface circuit plate and the 2nd tested IGBT module,
2nd step, electrical network provide three-phase 380 volts of voltage of alternating current, by after voltate regulator pressure regulation and rectification cabinet rectification for first group of tested IGBT module and the 2nd group of tested IGBT module provide temperature rise measured power voltage simultaneously;
The phasing degree of the 3rd step, the modulation factor being adjusted first group of tested IGBT module by the program in Industrial Control Computer and the 2nd group of tested IGBT module modulation factor and first group of tested IGBT module and the 2nd group of tested IGBT module phasing degree, tripping pulse, makes IGBT module enter working order;
4th step, adjustment voltate regulator make the voltage on common DC bus reach rated DC current pressure, make the outward current of IGBT module reach rated current;
5th step, when above-mentioned declared working condition, every five minutes record one secondary data, data content comprises the temperature of first group of tested IGBT module and the 2nd group of tested IGBT module, the temperature of load reactance device, when temperature variation is within 1 DEG C in one hour for IGBT module, can judge that IGBT module has reached thermally-stabilised;
6th step, calculate first group of tested IGBT module according to test environment thermometer and the temperature rise of the 2nd group of tested IGBT module.
Inventive design has following apparent outstanding substantive distinguishing features and remarkable advantage: the present invention is by operation scheme back-to-back, when power factor is 1, make the measurement condition of IGBT module closer to actual operating mode, test condition is more scientific, test data is more convincing, tested module is applied pwm pulse signal by controller of the present invention, only change modulation factor and the phase angle of often organizing IGBT module, control mode is simple, can realize meritorious and idle by first group of tested IGBT module, circulation in the closed loop of the 2nd group of tested IGBT module and load reactance device composition, serve energy to circulate between two groups of IGBT module and load reactance device, electrical network only provides loss power section, greatly reduce testing cost, and the electric current of the tested IGBT module of PLC monitor in real time, voltage, the information such as temperature and fault, judgement accurately and timely can be made according to abnormal conditions during test, circuit system and device are effectively protected, the present invention only needs outside access direct current bus, controller and load reactance device all can adopt frequency transformer internal components, test condition easily meets, take up an area little, test platform is built consuming time short, the present invention can carry out the power test of many group IGBT module simultaneously, save the test duration, efficiency is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of the test circuit of the present invention;
Fig. 2 is the vector diagram of two groups of IGBT module output voltages and electric current.
Embodiment
The principle of the present invention describes in detail as follows by reference to the accompanying drawings:
The test circuit of a kind of frequency transformer IGBT module temperature rise, comprise first group of tested IGBT module 1, 2nd group of tested IGBT module 2, load reactance device 3, first interface circuit plate 7, 2nd interface circuit plate 8 and Industrial Control Computer 9, the DC side of the DC side of first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 links together, and linked together by common DC bus and external direct current power supply, the inverter side of the inverter side of first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 is linked together by common load reactance device 3, form a topological framework run back-to-back, electrical network 10 is linked together by voltate regulator 6 and rectification cabinet 5, the voltage output plus terminal of rectification cabinet 5 and the just end of common DC bus link together, the negative terminal that the voltage of rectification cabinet 5 exports negative terminal and common DC bus links together, DC support electric capacity 4 just it is connected with between end and negative terminal at common DC bus, Industrial Control Computer PLC9 is linked together by the pulse signal control end of the first interface circuit plate 7 and first group of tested IGBT module 1, Industrial Control Computer 9 is linked together by the pulse signal control end of the 2nd interface circuit plate 8 and the 2nd group of tested IGBT module 2.
A testing method for frequency transformer IGBT module temperature rise, comprises the following steps:
The first step, the DC side of the DC side of first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 links together, and linked together by common DC bus and external direct current power supply, the inverter side of the inverter side of first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 is linked together by common load reactance device 3, form a topological framework run back-to-back, electrical network 10 is linked together by voltate regulator 6 and rectification cabinet 5, the voltage output plus terminal of rectification cabinet 5 and the just end of common DC bus link together, the negative terminal that the voltage of rectification cabinet 5 exports negative terminal and common DC bus links together, DC support electric capacity 4 just it is connected with between end and negative terminal at common DC bus, Industrial Control Computer 9 is linked together by the pulse signal control end of the first interface circuit plate 7 and the first tested IGBT module 1, Industrial Control Computer 9 is linked together by the pulse signal control end of the tested IGBT module 2 of the 2nd interface circuit plate 8 and the 2nd,
2nd step, electrical network 10 provide three-phase 380 volts of voltage of alternating current, by after voltate regulator 6 pressure regulation and rectification cabinet 5 rectification for first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 provide temperature rise measured power voltage simultaneously;
The phasing degree of the 3rd step, the modulation factor being adjusted first group of tested IGBT module 1 by the program in Industrial Control Computer 9 and the 2nd group of tested IGBT module 2 modulation factor and first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 phasing degree, tripping pulse, makes IGBT module enter working order;
4th step, adjustment voltate regulator 6 make the voltage on common DC bus reach rated DC current pressure, make the outward current of IGBT module reach rated current;
5th step, when above-mentioned declared working condition, every five minutes record one secondary data, data content comprises first group of tested IGBT module 1 and the temperature of the 2nd group of tested IGBT module 2, the temperature of load reactance device 3, when temperature variation is within 1 DEG C in one hour for IGBT module, can judge that IGBT module has reached thermally-stabilised;
6th step, the temperature rise calculating first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 according to test environment thermometer.
Fig. 1 is the structural representation of the test circuit of the present invention, wherein, first group of tested IGBT module 1 is connected by direct current bus with the DC side of the 2nd group of tested IGBT module 2, DC support electric capacity 4, first group of tested IGBT module 1 is had to exchange the two ends exporting and connecting load reactance device 3 respectively with the 2nd group of tested IGBT module 2 between direct current bus is positive and negative. first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 inside form by three-phase IGBT module. the external dc power supply of inventive design is regulated through voltate regulator 6 by electrical network V_grid, and voltate regulator 6 exports rectification cabinet 5 to, and rectification cabinet 5 exports volts DS and is connected on frequency changer direct current bus, it is achieved the continuously adjustabe of external dc voltage. wherein V_grid is electrical network three-phase voltage 380 volts. the control part of inventive design is primarily of Industrial Control Computer 9 and the first interface circuit plate 7, 2nd interface circuit plate 8 completes, electricity interface circuit card 7 controls first group of tested IGBT module 1, 2nd interface circuit plate 8 controls the 2nd group of tested IGBT module 2, Industrial Control Computer 9 and the first interface circuit plate 7, 2nd interface circuit plate 8 is by POWERLINK industry ethernet communication, first interface circuit plate 7, 2nd interface circuit plate 8 all accepts the instruction of same Industrial Control Computer 9, and realize the generation of pwm pulse actuate signal, it is applied in each group of IGBT module, simultaneously, often organize the temperature of IGBT module, electric current, the signal such as voltage and fault is by the first interface circuit plate 7, Industrial Control Computer 9 is fed back to during the 2nd interface circuit plate 8.
The vector diagram of two groups of IGBT module output voltages and electric current when Fig. 2 is test back-to-back, wherein, V1It is the output voltage virtual value of first group of tested IGBT module 1, V2It it is the output voltage virtual value of the 2nd group of tested IGBT module 2, �� is first group of tested IGBT module 1 and the phase angle difference of the 2nd group of tested IGBT module 2 output voltage, I is the electric current virtual value of load reactance device 3, the modulation factor being set first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 by PLC program is equal, makes V1And V2Amplitude is equal, and the phase angle difference of first group of tested IGBT module 1 and the 2nd group of tested IGBT module 2 is ��, by adjusting two groups of tested IGBT module modulation factors and phase angle difference, when volts DS reaches rated DC current pressure, makes load current I reach rated current.
Inventive design is carrying out close to when actual operating mode as far as possible, for the frequency transformer of the different type of cooling, to be met its specified cooling conditions as far as possible, forced air cooling frequency transformer needs to open its cooling fan, water-cooled frequency transformer needs outside and accompanies examination water cooling equipment, in order to simulate cold source water condition, and cold source water and water coolant is made all to reach specified operating flux and pressure, the temperature rise of test frequency converter IGBT module and passive device under specified heat transfer boundary condition.
Claims (1)
1. the test circuit of a frequency transformer IGBT module temperature rise, comprise first group of tested IGBT module (1), 2nd group of tested IGBT module (2), load reactance device (3), first interface circuit plate (7), 2nd interface circuit plate (8) and Industrial Control Computer (9), it is characterized in that, the DC side of the DC side of first group of tested IGBT module (1) and the 2nd group of tested IGBT module (2) links together, and linked together by common DC bus and external direct current power supply, the inverter side of the inverter side of first group of tested IGBT module (1) and the 2nd group of tested IGBT module (2) is linked together by common load reactance device (3), form a topological framework run back-to-back, electrical network (10) is linked together by voltate regulator (6) and rectification cabinet (5), the voltage output plus terminal of rectification cabinet (5) and the just end of common DC bus link together, the negative terminal that the voltage of rectification cabinet (5) exports negative terminal and common DC bus links together, DC support electric capacity (4) just it is connected with between end and negative terminal at common DC bus, Industrial Control Computer (9) is linked together by the pulse signal control end of the first interface circuit plate (7) Yu first group of tested IGBT module (1), Industrial Control Computer (9) is linked together by the pulse signal control end of the 2nd interface circuit plate (8) Yu the 2nd group of tested IGBT module (2).
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| CN201520975242.2U CN205280834U (en) | 2015-11-30 | 2015-11-30 | Converter IGBT module temperature rise test circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425072A (en) * | 2015-11-30 | 2016-03-23 | 北京赛思亿电气科技有限公司 | Testing circuit and testing method for temperature rise of IGBT module of frequency converter |
| CN109142928A (en) * | 2018-08-28 | 2019-01-04 | 惠州市金田科技有限公司 | A kind of frequency converter is to dragging test method |
| CN109489220A (en) * | 2018-11-28 | 2019-03-19 | 奥克斯空调股份有限公司 | Method for testing temperature rise, device, convertible frequency air-conditioner and the computer readable storage medium of convertible frequency air-conditioner power device |
| CN111123059A (en) * | 2019-08-31 | 2020-05-08 | 贵州大学 | IGBT module temperature rise characteristic analysis method |
-
2015
- 2015-11-30 CN CN201520975242.2U patent/CN205280834U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425072A (en) * | 2015-11-30 | 2016-03-23 | 北京赛思亿电气科技有限公司 | Testing circuit and testing method for temperature rise of IGBT module of frequency converter |
| CN109142928A (en) * | 2018-08-28 | 2019-01-04 | 惠州市金田科技有限公司 | A kind of frequency converter is to dragging test method |
| CN109489220A (en) * | 2018-11-28 | 2019-03-19 | 奥克斯空调股份有限公司 | Method for testing temperature rise, device, convertible frequency air-conditioner and the computer readable storage medium of convertible frequency air-conditioner power device |
| CN109489220B (en) * | 2018-11-28 | 2021-01-01 | 奥克斯空调股份有限公司 | Temperature rise test method and device for variable frequency air conditioner power device, variable frequency air conditioner and computer readable storage medium |
| CN111123059A (en) * | 2019-08-31 | 2020-05-08 | 贵州大学 | IGBT module temperature rise characteristic analysis method |
| CN111123059B (en) * | 2019-08-31 | 2021-11-05 | 贵州大学 | IGBT module temperature rise characteristic analysis method |
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Address after: 214105 room 806-813, block C, Chong Dong building, 88, Dan Shan Road, Xishan Town, Xishan, Wuxi. Co-patentee after: SHANXI FENXI HEAVY INDUSTRY Co.,Ltd. Patentee after: WUXI SILENT ELECTRIC SYSTEM (SES) TECHNOLOGY Co.,Ltd. Address before: 100097 room 506 and 507, block B, Jia Hao International Center, 116 Zizhu Road, Haidian District, Beijing. Co-patentee before: SHANXI FENXI HEAVY INDUSTRY Co.,Ltd. Patentee before: BEIJING CSE ELECTRICAL SCIENCE & TECHNOLOGY CO.,LTD. |
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Address after: Plot 83-D, Development Zone, Xinwu District, Wuxi City, Jiangsu Province, 214105 Patentee after: China Shipbuilding Saisiyi (Wuxi) Electrical Technology Co.,Ltd. Country or region after: China Patentee after: China State Shipbuilding Corporation Fenxi Heavy Industry Co.,Ltd. Address before: 214105 room 806-813, block C, Chong Dong building, 88, Dan Shan Road, Xishan Town, Xishan, Wuxi. Patentee before: WUXI SILENT ELECTRIC SYSTEM (SES) TECHNOLOGY Co.,Ltd. Country or region before: China Patentee before: SHANXI FENXI HEAVY INDUSTRY Co.,Ltd. |