Title :
High-frequency link DC-AC converter with suppressed snubber circuits-naturally commutated phase angle control with self turn-off devices
Author :
Matsui, Mikihiko ; Nagai, Masaki ; Mochizuki, Masayuki ; Nabae, Akira
Author_Institution :
Dept. of Electron. Eng., Tokyo Inst. of Polytech., Kanagawa, Japan
Abstract :
A novel approach to HF (high-frequency) link power conversion with suppressed snubber circuits which is suitable for high-power application is proposed. A new control scheme totally utilizing natural commutation phase-angle control with a self-turn-off device is proposed. The magnetic energy stored in the leakage inductance at the moment of switching is released and fed back to the DC voltage source by means of commutation overlap phenomena. Instantaneous current control on the output AC side of the cycloconverter stage is also available by applying current feedback control. When the proposed system is linked to the AC system line, an active filtering function against AC loads connected in parallel at the same AC system also becomes available
Keywords :
active filters; commutation; electric current control; feedback; load (electric); overcurrent protection; phase control; power convertors; AC loads; DC-AC power convertors; HF link; active filtering function; commutation overlap; current control; cycloconverter; feedback; leakage inductance; magnetic energy; naturally commutated phase angle control; output AC side; self turn-off devices; suppressed snubber circuits; Active filters; Circuits; Current control; Feedback control; Hafnium; Inductance; Magnetic switching; Power conversion; Snubbers; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-1462-X
DOI :
10.1109/IAS.1993.298995
