CN211718416U

CN211718416U - High-power module test platform

Info

Publication number: CN211718416U
Application number: CN201922416662.8U
Authority: CN
Inventors: 王浩; 崔梦秋
Original assignee: China Mining Drives and Automation Co Ltd
Current assignee: Jiangsu Guochuan Electric Co ltd
Priority date: 2019-12-29
Filing date: 2019-12-29
Publication date: 2020-10-20
Anticipated expiration: 2029-12-29

Abstract

The utility model discloses a high-power module test platform, which comprises a three-phase rectifier module, a pre-charging loop module, a discharging loop module, a supporting capacitor module and a test module; the three-phase rectification module is connected with the pre-charging loop in parallel and then is connected with the discharging loop module; the discharge loop module is connected with a positive zero negative electrode of the support capacitor module, and the support capacitor module is connected with the direct current side of the test module; the test module comprises a 1700V IGBT test module, a 3300V IGBT test module and a 4500V IGBT test module. The test platform can not only test the performance of a single IGBT power device packaged at different voltage levels, but also test the performance of a high-power module of a loop of a multi-level topological principle formed by the test platform.

Description

High-power module test platform

Technical Field

The utility model relates to a power device tests technical field, especially relates to a high-power module test platform.

Background

With the continuous development and progress of power electronic technology, high-power current transformation technology is widely applied and plays an important role. The existing IGBT function test platform can only test one IGBT power device and topology structure with the same voltage grade and packaging, and when the power devices with different voltage grades and packaging need to be tested, different test platforms need to be built, so that a large amount of funds and space are occupied.

Disclosure of Invention

The utility model discloses just to the shortcoming that exists among the prior art, provide a high-power module test platform, this test platform has realized carrying out capability test to different voltage classes, encapsulation IGBT power device.

The utility model provides a high-power module test platform, which comprises a three-phase rectifier module, a pre-charging loop module, a discharging loop module, a supporting capacitor module and a test module; the three-phase rectification module, the pre-charging loop module and the discharging loop module are connected in parallel; the three-phase rectification module, the pre-charging loop and the discharging loop module are respectively connected with the positive zero negative electrode of the supporting capacitor module, and the supporting capacitor module is connected with the direct current side of the testing module; the test module comprises a 1700V IGBT test module, a 3300V IGBT test module and a 4500V IGBT test module.

Preferably, the test platform further comprises a divider resistor, and the divider resistor is connected with the test module after being connected with the support capacitor module in parallel.

Preferably, the pre-charging circuit module comprises a pre-charging circuit module including a voltage regulator, a pre-charging transformer, a pre-charging resistor, a pre-charging voltage-rising plate and a contactor, and the switch of the contactor is controlled by a 220V power supply.

Preferably, the discharge loop is composed of a resistor and a contactor, and a switch of the contactor is controlled by a 220V power supply.

Preferably, the supporting capacitor module comprises a direct current supporting non-inductive laminated bus and a film supporting capacitor, and the direct current supporting non-inductive laminated bus is fixed on the film supporting capacitor.

Preferably, the 1700V IGBT test module comprises a rectifier diode, a 1700V voltage-class conventionally packaged power device, a drive control board, a non-inductive laminated bus and a heat radiator.

Preferably, the 3300V IGBT test module comprises a 3300V voltage class conventionally packaged power device, a drive control board, a non-inductive laminated bus and a heat sink.

Preferably, the 4500V IGBT test module includes a 4500V voltage class conventionally packaged power device, a drive control board, a non-inductive laminated bus bar and a heat sink.

Preferably, the test platform may be disposed in a cabinet.

Compared with the prior art, the utility model discloses specifically as follows advantage: the test platform can test the performance of the packaged IGBT power device according to different voltage levels; meanwhile, the designed platform is compatible with the topological principle structures of a two-level, three-level and other multi-level full bridge arm and half bridge arm respectively, and the performance test of the conventional packaged high-power module covering most 1700V/4500V/3300V voltage levels at present is realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limitation. The present application will be described in detail with reference to the accompanying drawings and examples.

Fig. 1 is an electrical diagram of a high-power module testing platform according to an embodiment of the present invention;

fig. 2 is a structural diagram of a supporting capacitor module according to an embodiment of the present invention;

fig. 3 is a 1700V test module structure diagram according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, fig. 1 is an electrical diagram of the present invention, and the high-power module testing platform of the present invention includes a three-phase rectifier module, a pre-charging loop module, a discharging loop module, a supporting capacitor module, and a testing module; the three-phase rectification module, the pre-charging loop module and the discharging loop module are connected in parallel; the three-phase rectification module, the pre-charging loop and the discharging loop module are respectively connected with the positive zero negative electrode of the supporting capacitor module, and the supporting capacitor module is connected with the direct current side of the testing module; the test module comprises a 1700V IGBT test module, a 3300V IGBT test module and a 4500V IGBT test module.

The test platform further comprises voltage dividing resistors RFD 1-RFD 1, and the voltage dividing resistors are connected with the test module after being connected with the supporting capacitor module in parallel. The test platform also includes two voltmeters VT1 and VT2 for displaying voltage values.

The three-phase rectification module comprises alternating current, fuses RD 1-RD 3 and silicon controlled modules D1-D6, and the pre-charging loop module comprises a voltage regulator TR1, a pre-charging transformer TB1, a pre-charging resistor RCD1, an RCD2, a pre-charging boosting plate DT1 and a contactor S1. And the discharge loop module consists of a resistor RS1 and a contactor S2. The contactors S1 and S2 are controlled by a 220V power supply to be opened. The supporting capacitor module structure is shown in fig. 2, and includes a dc supporting non-inductive laminated bus 301 and a thin film supporting capacitor 302, wherein the dc supporting non-inductive laminated bus is mounted on the thin film supporting capacitor. The support capacitor module is connected with the three groups of test modules through the direct current sides fixed by bolts. The three-phase rectification module, the pre-charging loop module and the discharging loop module are connected in parallel; the three-phase rectification module, the pre-charging loop and the discharging loop module are respectively connected with the positive zero negative electrode of the support capacitor module, and the pre-charging loop module is connected with a direct-current bus and connected with the positive zero electrode and the negative zero electrode of the support capacitor module to pre-charge the support capacitor module; and the discharge loop module is connected with the direct current bus and is connected with the positive and negative zero poles of the support capacitor module to discharge the support capacitor module.

1700V test module referring to fig. 2, the 1700V test module includes a rectifier diode 201, a 1700V power device 202 packaged conventionally at voltage level, a driving control board 203, a non-inductive laminated bus 204, and a heat sink 205; the diode 201 adopts a two-level rectification topology principle, so that the performance test can be performed on the diode module, and the diode module can be used as a rectifier to realize the performance test of the full functions of rectification and inversion. The power device with 1700V voltage level packaged conventionally is respectively designed with two-level, three-level and other multi-level full bridge arm and half bridge arm topological principle structures; the performance test can be carried out on the 1700V power device, the performance test of the 1700V power device on various level topological principles can be realized, and the non-inductive laminated bus is connected and installed with the power device through bolt fixation; the power device is fixedly arranged on the radiator through a bolt, and the PT temperature measuring device can be arranged on the radiator.

The 3300V test module can refer to the 1700V test module; the 3300V test module comprises a power device, a drive control board, a non-inductive laminated bus and a radiator, wherein the power device is conventionally packaged at 3300V voltage level; the 3300V voltage class packaging power device is respectively designed with two-level, three-level and other multi-level full bridge arm and half bridge arm topological principle structures; the performance test can be carried out on the 3300V power device, and the performance test of the 3300V power device on various level topological principles can be realized; the non-inductive laminated bus is connected and installed with the power device through bolt fixing; the power device is fixedly arranged on the radiator through a bolt, and a PT temperature detector can be arranged on the radiator.

The structure of the 4500V test module can refer to the 1700V test module, and the 4500V test module comprises a power device, a drive control board, a non-inductive laminated bus and a radiator which are packaged conventionally at 4500V voltage level; 4500V voltage level normally-packaged power devices are respectively designed with two-level, three-level, equal-level multi-level full bridge arm and half bridge arm topological principle structures; the performance test can be carried out on the 4500V power device, and the performance test of the 4500V power device on various level topological principles can be realized; the non-inductive laminated bus is connected and installed with the power device through bolt fixing; the power device is fixedly arranged on the radiator through a bolt, and the PT temperature measuring device is arranged on the radiator.

The testing platform can be arranged in a cabinet body in the cabinet body, the cabinet body can also comprise a fan cover, a heat radiation fan, an air duct, a cabinet body frame and the like, and a 1700V testing module, a 3300V testing module, a 4500V testing module, a three-phase rectifying module, a pre-charging loop module, a discharging loop module and a supporting capacitor module are fixed on the testing cabinet body through bolts.

Claims

1. A high-power module test platform is characterized by comprising a three-phase rectification module, a pre-charging loop module, a discharging loop module, a supporting capacitor module and a test module; the three-phase rectification module, the pre-charging loop module and the discharging loop module are connected in parallel; the three-phase rectification module, the pre-charging loop and the discharging loop module are respectively connected with the positive zero negative electrode of the supporting capacitor module, and the supporting capacitor module is connected with the direct current side of the testing module; the test module comprises a 1700V IGBT test module, a 3300V IGBT test module and a 4500V IGBT test module.

2. The power module testing platform of claim 1, further comprising a voltage divider resistor connected to the testing module after being connected in parallel with the supporting capacitor module.

3. The high power module test platform of claim 1, wherein the pre-charge circuit module comprises a voltage regulator, a pre-charge transformer, a pre-charge resistor, a pre-charge boost plate, and a contactor, and the switch of the contactor is controlled by a 220V power supply.

4. The high power module test platform of claim 1, wherein the discharge loop is composed of a resistor and a contactor, and a switch of the contactor is controlled by a 220V power supply.

5. The power module testing platform of claim 1, wherein the supporting capacitor module comprises a dc supporting non-inductive laminated bus bar and a thin film supporting capacitor, the dc supporting non-inductive laminated bus bar is fixed on the thin film supporting capacitor.

6. The high power module test platform of claim 1, wherein the 1700V IGBT test module comprises a rectifier diode, a 1700V voltage class packaged power device, a drive control board, a non-inductive laminated bus bar, and a heat sink.

7. The high power module test platform of claim 1, wherein the 3300V IGBT test module comprises a 3300V voltage class conventionally packaged power device, a drive control board, a non-inductive laminated busbar, and a heat sink.

8. The high power module test platform of claim 1, wherein the 4500V IGBT test module comprises a 4500V voltage class conventionally packaged power device, a drive control board, a non-inductive laminate bus bar, and a heat sink.

9. The high power module test platform of any one of claims 1-8, wherein the test platform is disposable in a cabinet.