EMC testing system applicable to rotary load and testing method thereof

Abstract

The invention provides an EMC testing system applicable to a rotary load and a testing method thereof. The EMC testing system comprises a shielded chamber, the rotary load, a first connecting shaft, acompressor, a fluid pipe, a fluid motor, a second connecting shaft and a motor load, wherein the rotary load, the first connecting shaft and the compressor are arranged inside the shielded chamber; the fluid motor, the second connecting shaft and the motor load are arranged outside the shielded chamber; the rotary load is connected with the compressor through the first connecting shaft; compressor is connected with the fluid motor through the fluid pipe; the fluid motor is connected with the motor load through the second connecting shaft; the fluid pipe runs through the shielded chamber. According to the invention, the compressor transmits energy to the outside through a fluid and then converts the energy into electric energy, so that the problem of EMC interference caused by an electromagnetic load is avoided and the problem that non-metallic connecting shafts in the mechanical transmission process are expensive is avoided, and thus the testing system provided by the invention has high testing accuracy and relatively low cost.

Description

technical field [0001] The invention relates to the field of electromagnetic compatibility testing, in particular to an EMC testing system suitable for rotating loads and a testing method thereof. Background technique [0002] Currently, in EMC testing around the world, mechanical loads need to be applied when testing rotating loads such as motors in darkrooms that require shielding or shielding. In order to properly test the EMC level of the device under test, the applied load must not be able to generate radiated and conducted disturbances. [0003] One of the commonly used methods at present is to use ceramic shafts and mechanical shafts made of non-conductive electromagnetic materials to pass the torque of the motor load through the EMC shielding room, and then connect it to electronic load devices such as generator sets. This method is simple, but the mechanical cost and the construction cost of the shielding room are very high, which cannot be afforded by ordinary com...

AI Technical Summary

Problems solved by technology

Compared with the first solution, the cost of this method has been reduced, but the test installation process is more complicated, and improper installation may cause leakage, resulting in unreliable test results and low test efficiency due to test rework.

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