Published Paper Details:

The overvoltage at motor terminals fed by variable frequency drives produces severe stress on motor insulation systems. The paper aims to provide a comparative survey of existing filters designed to suppress overvoltage. These filters are passive and installed at both the motor and inverter terminals. The overvoltage is typically caused by the high change rate of the inverter output voltage (dv/dt) and the surge impedance mismatch between the inverter and the power cable of the motor. The paper discusses the design methodologies employed for these passive filters. This could include how the filters are constructed and tuned to address overvoltage issues. This paper presents a comparative survey of the existing filters of overvoltage suppression, which are passive filters at both motor and inverter terminals. The article also evaluates the practical applicability of these passive filters. This could include cost, ease of installation, and maintenance requirements. The design methodologies, effectiveness, and practical relevance of these passive filters are discussed through computer simulations based on MATLAB, and promising approaches are recommended for researchers and industrial users.