An approximation to EMI noise problem to design an appropriate EMI filter for induction motor control systems

Abstract

Fixing conducted electromagnetic interference (EMI) problems with EMI filters is not en exact science. It normally involves a cut-and-trial process for a designer to come up with a proper filter design or approximation. As such, designing a filter is a time-consuming process for beginning engineers as well as for experienced engineers when they face new design circumstances. Due to this, predicting and solving EMI emissions related to common mode ones, induction motor drive systems require various frequency-dependent effects to be considered. Thus, the application of circuitry to increase the performance per size, prevent dependency on some parameters of the motor and the new conditions corresponding to the new technological improvements in our daily systems for an EMI filter is considered.