Title :
Isolated three-phase AC-to-DC bidirectional converter with a small number of switches
Author :
Takeuchi, Akira ; Endo, Hishahito ; Muroyama, Seiichi ; Ohtsu, Satoshi
Author_Institution :
NTT Integrated Inf. & Energy Syst. Labs., Tokyo, Japan
Abstract :
A bidirectional converter that converts three-phase AC to DC or vice versa by using a high-frequency transformer has been investigated. The main feature of the circuit is that it does not need as many switches as the conventional converter. Suitable operating conditions and design considerations for the circuit were clarified by analyzing the steady-state characteristics and resonant reset of the transformer. Circuit operation was verified by simulation, and it was confirmed that AC currents can be controlled as sinusoidal waveforms by using a simple control circuit
Keywords :
AC-DC power convertors; electric current control; switching circuits; transformers; AC currents control; circuit operation verification; control circuit; design considerations; high-frequency transformer; inverter mode; operating conditions; rectifier mode; sinusoidal waveforms; steady-state characteristics; switches; three-phase AC-to-DC bidirectional converter; transformer resonant reset; Analog-digital conversion; Circuit simulation; Laboratories; Pulse width modulation; Rectifiers; Resonance; Steady-state; Switches; Switching circuits; Switching converters;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Conference_Location :
Nagaoka
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.645658
