A Simplified Filter Topology for Compensating Common Mode Voltage and Electromagnetic Interference in Induction Motor Drives

Recently the utilization of electric vehicle technology increasing drastically, because of environmental changes arises throughout the globe. Based on these issues, this paper focuses on the drive used in the electric vehicle with more economically. In general electric vehicles the induction motor drives are used, because they have great features, such as high starting torque and high efficiency. The motor drive is driven by high switching frequency PWM inverter supplied through a DC supply, since high switching frequency common mode (CM) voltage generated at the stator input motor terminals. This will create a shaft voltage through the motor air gap and raises the motor bearing current. This causes the premature damage to the motor reliability and lifetime. To compensate this problem an advanced active filter is designed, which will suppress the common mode voltage. And also analyze the impact of electromagnetic interference (EMI) on drive under the test (DUT). The above system will initially be executed in the electrical software tools like MATLAB/SIMULATION for confirmation of the results, suitable for electric vehicle applications, especially for induction motor drives.