Title :
Proposal of an isolated current controlled inverter
Author :
Oliveira, D.S. ; Bissochi, D.S. ; Tavares, C.A. ; Vieira, Douglas ; Farias, J.B. ; Freitas, L.C.
Author_Institution :
Univ. Federal de Uberlandia, Brazil
Abstract :
A combination of a two transistor forward converter (input) and a conventional full-bridge inverter (output) with current control loop is proposed, resulting in an isolated inverter. The forward converter operates in high frequency switching through a fixed frequency hysteresis controller, making the load current modulation. Due to the forward current modulation, the full-bridge inverter switches in ZVS mode at turn on, and operates with low switching frequency (load operation frequency). In this way, IGBTs can be used, allowing a high voltage output
Keywords :
DC-AC power convertors; bipolar transistor switches; bridge circuits; electric current control; insulated gate bipolar transistors; invertors; power bipolar transistors; switching circuits; ZVS mode; conventional full-bridge inverter; current control loop; fixed frequency hysteresis controller; high-frequency switching; isolated current controlled inverter; load current modulation; load operation frequency; power IGBTs; switching frequency; two transistor forward converter; Current control; Frequency conversion; Hysteresis; Insulated gate bipolar transistors; Inverters; Proposals; Switches; Switching converters; Switching frequency; Zero voltage switching;
Conference_Titel :
Power Electronics Congress, 2000. CIEP 2000. VII IEEE International
Conference_Location :
Acapulco
Print_ISBN :
0-7803-6489-9
DOI :
10.1109/CIEP.2000.891436
