Test system for electromagnetic compatibility performance of frequency conversion device

Abstract

The invention provides a test system for electromagnetic compatibility performance of a frequency conversion device, relates to the frequency conversion device test field and can accurately test electromagnetic compatibility performance of the large-power frequency conversion device. The system comprises a semi-anechoic chamber, a test platform disposed in the semi-anechoic chamber, a receiving antenna disposed in the semi-anechoic chamber and a power source disposed outside the semi-anechoic chamber, wherein one end of an input power source interface set on the test platform is connected withan input end of a to-be-tested frequency conversion device, an output end of the to-be-tested frequency conversion device is connected with one end of an output power source interface set on the testplatform, the power source is connected with the other end of the input power source interface to supply power for the input power source interface, the other end of the output power source interfaceis connected with a test load device disposed outside the semi-anechoic chamber, the load of the test load device is adjustable, and the receiving antenna is connected with a receiver disposed outside the semi-anechoic chamber for detecting the radiation transmission power of the to-be-tested frequency conversion device and transmitting the radiation transmission power to the receiver.

Description

technical field [0001] The invention relates to the field of frequency conversion equipment testing, in particular to a testing system for the electromagnetic compatibility performance of frequency conversion equipment. Background technique [0002] With the rapid development of power electronics and control technology, electrical equipment is more and more widely used underground in coal mines, forcing the underground electromagnetic environment to become increasingly harsh. From theoretical analysis and field measurement, it is found that the radiation emission disturbance of high-power frequency conversion equipment used in underground mines is relatively serious, which will cause interference to sensitive equipment working within a certain range, which may cause it to restart or shut down, and then may It will have disastrous consequences for coal mine safety production. [0003] The research on EMC performance in my country's coal mine industry started relatively late,...

AI Technical Summary

Problems solved by technology

The radiation emission disturbance of mining frequency conversion equipment has not been quoted or put forward relevant limits, and the radiation emission measurement method is generally to use on-site measurement or measurement in an open area, because this cannot avoid external interference with frequency conversion equipment and test equipment during operation. Therefore, the measurement results have large errors and are not accurate enough.

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