Power electronics and electromagnetic compatibility

Recently, power electronics has become the dominant factor in the deterioration of the electromagnetic environment, causing declining quality of line power and increasing level of conducted EMI. This paper reviews the fundamentals of EMC in power electronics, including the terminology and categories of EMC, the propagation and generation of low-frequency and high-frequency disturbances, and the various agency regulations. The paper also points out the difficulty of achieving compliance with line-harmonics norms using active solutions while maintaining low conducted EMI and low cost.

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