A Review on the Research Methods for Suppressing Conducted Disturbance in Motor Drive System

With the recent development in power electronic technologies, designers and manufacturers intend to increase the switching frequencies to achieve smaller size of the converter. However, the high currents gradient di/dt and high voltage gradient du/dt in the circuits will generate high differential mode (DM) noise and common mode (CM) noise, which seriously affect the normal operation of the equipment and adjacent other equipment. So it is necessary to study the methods of conducted disturbance suppression in drive system. The methods are broadly classified based on two criteria. One is the reduction of the conducted disturbance after generation. The other is the reduction of the conducted disturbance at the generation stage itself. This paper also discusses the characteristics and application prospects of the above suppression methods. In the end, this paper clarifies the principles that should be considered when adopting different conducted disturbance suppression methods in practice. The study in this paper can contribute to the further development and practical application of the conducted disturbance suppression methods of drive system.