Reduction of common mode voltage and high frequency leakage current generated by the PWM voltage source inverter using common mode voltage damper

능동보조회로를 이용한 전압형 PWM 인버어터 시스템에서의 커먼 모드전압과 고주파 누설전류 억제방법에 관한 연구

This paper propose a "common mode voltage damper" that is capable of reducing the common mode voltage produced in the PWM VSI. An push-pull circuits and high frequency leakage current damper[1] are incorporated into the "common mode voltage damper", the design method of which is presented. Effect of "common mode voltage damper" is simulated in this paper verifies the viability and effectiveness in 2.2kW induction motor drive using IGBT inverter. Simulated results show that "common mode voltage damper" makes significant contributions to reducing a high frequency leakage current.ducing a high frequency leakage current.