Title :
High-frequency transformer-assisted quasi-resonant DC link three-phase ZVS-PWM inverter and its evaluations
Author :
Yonemori, H. ; Suemasu, T. ; Nakaoka, M. ; Hayashi, K.
Author_Institution :
Kobe Univ., Japan
Abstract :
A novel type of quasi-resonant DC link (QRDCL) three-phase voltage source inverter topology operating under a principle of HF transformer-assisted zero voltage switching (ZVS) PWM is presented. The basic operating principle of a transformer-assisted QRDCL (TQRDCL) more suitable for CVCF/UPS, power active filters and switched-mode PWM power converters is presented in this paper. Its operating characteristics are discussed and evaluated in terms of using computer-aided simulation results. An experimental inverter circuit is built and tested for CVCF/UPS systems on the basis of a hard switched PWM inverter
Keywords :
PWM invertors; PWM power convertors; active filters; circuit analysis computing; circuit testing; digital simulation; high-frequency transformers; power engineering computing; power filters; power transformers; resonant power convertors; switched mode power supplies; switching circuits; uninterruptible power supplies; HF transformer; UPS; ZVS; computer-aided simulation; hard switched PWM inverter; operating principle; power active filters; quasi-resonant DC link; switched-mode PWM power converters; three-phase VSI; zero voltage switching;
Conference_Titel :
Power Electronics and Variable-Speed Drives, 1994. Fifth International Conference on
Conference_Location :
London
DOI :
10.1049/cp:19940997
