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Method for testing electromagnetic compatibility (EMC) of electrically-driven automobile

A test method and electromagnetic compatibility technology, applied in the direction of testing dielectric strength, measuring electricity, measuring devices, etc., can solve problems such as inability to accurately measure electromagnetic disturbances

Inactive Publication Date: 2011-05-04
SHANGHAI MOTOR VEHICLE INSPECTION CERTIFICATION & TECH INNOVATION CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes it impossible to accurately measure electromagnetic disturbances during its normal operation

Method used

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  • Method for testing electromagnetic compatibility (EMC) of electrically-driven automobile
  • Method for testing electromagnetic compatibility (EMC) of electrically-driven automobile
  • Method for testing electromagnetic compatibility (EMC) of electrically-driven automobile

Examples

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Effect test

no. 1 example

[0029] The first embodiment: the frequency range is 0.15MHz~30MHz radiation disturbance test method, wherein,

[0030] Test site: meet the requirements of the semi-anechoic chamber in GB14023

[0031] Detection method: peak detection

[0032] Pre-test minimum scan time: 9kHz~150kHz: 100ms / kHz;

[0033] 150kHz~30MHz: 100ms / MHz.

[0034] Final measurement measurement time: 1s

[0035] Measuring receiver bandwidth (6dB): 9kHz ~ 150kHz: 200Hz;

[0036] 150kHz~30MHz: 9kHz.

[0037] Measurement Antenna: For electric field measurement, a 1m vertical monopole with antenna matching unit is used For magnetic field measurement, a 60cm electrostatically shielded loop antenna is used

[0038] Measurement method: The vehicle runs on the chassis dynamometer (commercially available products can be used to absorb the energy of the vehicle) on the loaded chassis dynamometer at a constant speed of 64km / h on the wheel drum of the chassis dynamometer, or in other words, the electric The drive ...

no. 2 example

[0048] The second embodiment: a radiation disturbance test method with a frequency range of 30 MHz to 1000 MHz, wherein,

[0049] Test site: meet the requirements of the semi-anechoic chamber in GB14023

[0050] Detection method: peak detection, quasi-peak detection

[0051] Pre-test minimum scan time: 1ms / MHz

[0052] Final measurement measurement time: 1s

[0053] Measurement receiver bandwidth (6dB): 120kHz

[0054] Measuring antenna: 30MHz~1000MHz broadband antenna

[0055] Measurement method: The vehicle is run on the wheel drum at a constant speed of 40km / h on the loaded chassis dynamometer, or in other words, the electric drive vehicle is set on the chassis dynamometer at a speed of 40km / h or other predetermined speeds. The chassis dynamometer simulates road conditions to run the electric drive vehicle under load. Turn on all electronic and electrical equipment in the car, such as radio, navigator, Bluetooth hands-free, air conditioner, high and low beams, wiper, l...

no. 3 example

[0069] The third embodiment: the immunity test method of the radiated electromagnetic field from the source outside the vehicle, wherein,

[0070] Test site: semi-anechoic chamber

[0071] Frequency range: 10kHz~18GHz

[0072] Test signal:

[0073] 1.CW(0.01MHz~18GHz)

[0074] 2.AM (0.01~800MHz), modulation signal 1kHz, 80%

[0075] 3. PM (800MHz~18GHz), t is 577μs, period is 4600μs

[0076] Scan step: 2%

[0077] Dwell time: 2s

[0078] Electric field irradiation intensity: 50V / m

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Abstract

The invention provides a method for testing the electromagnetic compatibility (EMC) of an electrically-driven automobile. The electromagnetic interference of the electrically-driven automobile is different from that of the common internal combustion engine automobile, as far as the work principle of the electrically-driven automobile is concerned, the electrically-driven automobile has stronger electromagnetic disturbance property and higher anti-electromagnetic interference due to the application of a large-scale electronic system, the electrically-driven automobile is arranged on a loaded chassis dynamometer and runs on the chassis dynamometer at specific speed, the chassis dynamometer realizes energy absorption, and the electromagnetic compatibility of an automobile in a running state is evaluated from two angles of automobile electromagnetic interference (EMI) and automobile electromagnetic susceptibility (EMS), thereby when the automobile normally runs, the electromagnetic interference of the automobile can be accurately measured.

Description

technical field [0001] The invention relates to an automobile performance testing method, in particular to an automobile electromagnetic compatibility testing method. Background technique [0002] In recent years, more and more electronic products have been widely used in automobiles, and gradually form automotive electronics technology. The application of electronic technology in automobiles has become an important symbol of improving the technical level of automobiles. The proportion of various electronic and electrical products in automobiles is increasing, and this trend is still developing. Therefore, the application of a large number of electronic equipment involves a common problem, which is the electromagnetic compatibility of automobiles. Electromagnetic compatibility is a science that studies the coexistence of various electrical equipment (systems, subsystems, and even organisms) without causing degradation under the conditions of limited space, limited time, and...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R31/12
Inventor 缪文泉张君王雍童晓敏刘延林谢欢郭则新
Owner SHANGHAI MOTOR VEHICLE INSPECTION CERTIFICATION & TECH INNOVATION CENT CO LTD
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