Modeling of Conduction EMI Noise and Technology for Noise Reduction

摘要

With the recent advances in high-speed power se misconduct devices, the trends toward increased carrier frequencies and smaller-size inverters are advancing. High-frequency switching, however, is associated with the problem of high-frequency leakage current flowing through the stray capacitance of the motor windings to the grounding wire and the problem of EMI (electromagnetic interference). The following three methods are being considered for reducing conduction noise which is a problem in the frequency range of 150 kHz to 30 MHz.