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Method for testing electromagnetic interference propagation path of motor drive system of pure electric vehicle

A motor drive system, pure electric vehicle technology, applied in the fields of electromagnetic field characteristics, measuring electricity, measuring devices, etc., can solve problems such as electromagnetic interference propagation paths that have not yet been seen, and achieve the effects of easy operation, strong versatility, and improved electromagnetic compatibility.

Inactive Publication Date: 2012-01-11
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on the electromagnetic compatibility of electric vehicles or hybrid vehicles, and most of the only studies focus on the prediction of electromagnetic interference, and there is no research on how to analyze and test the propagation path of electromagnetic interference

Method used

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  • Method for testing electromagnetic interference propagation path of motor drive system of pure electric vehicle
  • Method for testing electromagnetic interference propagation path of motor drive system of pure electric vehicle
  • Method for testing electromagnetic interference propagation path of motor drive system of pure electric vehicle

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Embodiment Construction

[0018] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0019] The electromagnetic interference propagation path test method of the pure electric vehicle motor drive system comprises the following steps:

[0020] 1) Build a test platform in a half-wave anechoic chamber in accordance with the test environment for the conducted emission of automotive electronic components specified in the CISPR25 standard. The test platform includes a bench for the load-carrying system, a drive system to be tested, a current probe and a spectrum analyzer;

[0021] 2) Number the input and output wires of the inverter to be tested sequentially, respectively number 1, 2, 3, ... n;

[0022] 3) When testing wire harness 1, install the consumable ...

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Abstract

The invention discloses a method for testing an electromagnetic interference propagation path of a motor drive system of a pure electric vehicle. The method comprises the steps of platform building, lead wire numbering, frequency spectrum testing, comparing and analyzing and the like. By the method, the main propagation path of the electromagnetic interface in the system can be detected, and the intensity and the frequency band range of the electromagnetic interference on each propagation path can also be detected so as to help the engineering technicians to analyze the electromagnetic interference on the system harness, and direct the technicians to perform good electromagnetic compatibility design and rectification on the motor drive system, thereby improving the electromagnetic compatibility of the overall vehicle. The method disclosed by the invention is simple and easy to operate and has strong universality.

Description

technical field [0001] The invention relates to the technical field of conducted electromagnetic interference, in particular to a method for testing an electromagnetic interference propagation path of a pure electric vehicle motor drive system. Background technique [0002] With the wide application of electronic products in automobiles, the problem of electromagnetic compatibility of automobiles has become more and more serious. This problem is particularly important in pure electric vehicles and hybrid vehicles. If there is no good electromagnetic compatibility between the on-board equipment, it will not only affect the normal operation of the equipment, but even threaten the safe driving of the vehicle in severe cases. Electromagnetic compatibility issues for electric or hybrid vehicles are an urgent issue. The power devices in the motor drive system usually work in a high-speed switching state, which generates rapidly changing voltages and currents, which will form stro...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R29/08
Inventor 安宗裕汪泉弟郑亚利孙宏
Owner CHONGQING UNIV
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