Title :
Soft-switched current-fed PWM inverter with space vector modulation
Author :
Buso, S. ; Rossetto, L. ; Tenti, P. ; Tomasin, P. ; Pomilio, J.A.
Author_Institution :
Dipartimento di Elettronica e Inf., Padova Univ., Italy
Abstract :
A soft-switched PWM power converter structure is presented, which is useful for current-fed inverters and rectifiers. Typical applications include power supplies for magnets and SMES systems, high-power AC motor drives and active power filters with magnetic energy storage. Soft switching, which is provided at the expense of a limited increase of the circuit complexity, makes possible commutation frequencies considerably higher than for hard-switched solutions. Moreover, full-range regulation of the AC currents is obtained, owing to a suitable current vector modulation technique. Lastly, a proper switching sequence is derived, which minimizes power loss and switch overvoltages. Simulated results demonstrate the power converter capabilities
Keywords :
AC motor drives; AC-DC power convertors; DC-AC power convertors; PWM invertors; PWM power convertors; active filters; commutation; electric current control; power filters; power supplies to apparatus; rectifiers; rectifying circuits; superconducting magnet energy storage; switching circuits; AC current regulation; AC motor drives; PWM inverter; SMES; active power filters; applications; commutation frequency; current-fed inverters; magnetic energy storage; magnets; overvoltages; power supplies; rectifiers; soft-switched PWM power converter; space vector modulation; switching sequence; AC motors; Active filters; Magnetic separation; Magnets; Power supplies; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Samarium; Switches;
Conference_Titel :
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-1993-1
DOI :
10.1109/IAS.1994.377522
