PWM 인버어터 구동된 유도 전동기에서의 커먼모드 전압, 전류의 저감방법에 관한 연구

This paper propose an "Active common-mode voltage damper circuit" that is capable of reducing the common-mode voltage produced in the PWM VSI. An half-bridge PWM inverter circuit and high frequency transformer are incorporated into the "Active common-mode voltage damper", the design method of which is presented. Effect of "Active common-mode voltage damper"is simulated in this paper verifies the viability and effectiveness in 2.2[kW] induction motor drive using IGBT inverter. Simulated results show that "common mode voltage damper" makes contributions to reducing a high frequency leakage current and common-mode voltage