# 수동소자에 의한 축적에너지 2중 궤환방식 전류형 GTO 인버터의 입.출력 특성

• Kim, Jin-Pyo (Dept. of Electrical Engineering, Chungbuk National University) ;
• Choi, Sang-Won (Dept. of Electrical Engineering, Chungbuk National University) ;
• Lee, Jong-Ha (Dept. of Electrical Engineering, Chungbuk National University)
• 김진표 (충북대학교 전기공학과) ;
• 최상원 (충북대학교 전기공학과) ;
• 이종하 (충북대학교 전기공학과)
• Published : 1997.07.21

#### Abstract

In order to develop the three phase GTO CSI with double recovery path of commutation energy by passive devices (LCD), we studied the clamping circuit to protect switching device and energy recovery circuit to recover absorbed energy of capacitor and DC inductor. In this paper, we investigated how DC input power is increased or decreased according to energy recovery path with or not in the three phase GTO current source inverter, we used a induction motor as inverter load, and controlled a induction motor with v/f constant control. Experimental results show that dissipated DC power is decreased in $9{\sim}14%$ by double recovery path. We also confirmed that the characteristics is met as compare simulation results with experimental results according to each frequency.