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Three-level power module accelerated aging test system

A power module, accelerated aging technology, applied in the direction of measuring electricity, measuring electrical variables, environment/reliability testing, etc., can solve the problem of three-level power module acceleration, three-level power module reliability and long life test cycle Low success rate and other issues, to achieve a wide voltage range, to solve the effect of long field verification cycle

Active Publication Date: 2021-07-02
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology

[0009] The purpose of the present invention is to provide a three-level power module accelerated aging test system to solve the problems of

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  • Three-level power module accelerated aging test system

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the invention, not to limit the invention.

[0049] The power module mentioned in the present invention performs DC-AC and AC-DC conversion on high-power converter equipment, and is mainly composed of power semiconductor devices, drive devices, radiators, low-inductance busbars and capacitors.

[0050] Commonly used main circuit topologies are two-level and three-level, the two-level output is positive and negative two levels, and the three-level output is positive, negative and zero level.

[0051] There are two power semiconductor devices on the two-level bridge arm;

[0052] There are 4 power semiconductor devices on the three-level bridge arm. Through d...

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Abstract

The invention relates to the technical field of power device tests, and more specifically relates to a three-level power module accelerated aging test system. The three-level power module accelerated aging test system provided by the invention comprises a three-level power supply, a switch control cabinet, a control device, a three-level power module and a load, wherein the three-level power supply is used for providing a three-level power supply; the switch control cabinet is used for controlling the on-off of a three-level power supply between the three-level power supply and the three-level power module according to a switch control signal sent by the control device; the control device is used for sending a driving pulse signal to the three-level power module and driving the three-level power module to work; the three-level power module is used as a tested power module, is connected with the switch control cabinet, the control device and the load and is used for carrying out an accelerated aging test; and the load is connected with the three-level power module and consumes the output electric energy of the three-level power module. According to the invention, the three-level power supply with a wide voltage range, high precision and small ripples can be output, and an accelerated life test can be carried out on the three-level power module in a short time.

Description

technical field [0001] The invention relates to the technical field of power device testing, in particular to a three-level power module accelerated aging test system. Background technique [0002] High-power converter systems are key components of electrical systems in fields such as rail transit, wind power, and power grids. In the field of high-power converter drives, in order to achieve the purpose of realizing high-voltage circuits with medium-voltage devices, three-level power modules are usually used in the field of high-power converters. [0003] The three-level power module has been widely used in the field of rail transportation, wind power, steel rolling and other current conversion fields due to its unique advantages such as small harmonic components, no need for large reactors, and the ability to increase the voltage level of equipment. 3300V three-level power modules The power device can achieve the voltage level of a 6500V two-level power device, and has many...

Claims

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/003
Inventor 张晓林珍君彭程李华高帅刘敏程俊朱亮薛新夏晶杨婷
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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