Title :
Hybrid PWM rectifiers to reduce electromagnetic interference
Author :
Sato, Yukihiko ; Kawamura, Kouki ; Morimoto, Hiroaki ; Nezu, Kazuyoshi
Author_Institution :
Dept. of Electron. & Mech. Eng., Chiba Univ., Japan
Abstract :
A hybrid PWM rectifier is proposed as a method to reduce the electromagnetic interference. The hybrid PWM rectifier consists of parallel-connected two component bridge circuits, that is, main and auxiliary bridge circuits. The main bridge circuit to handle the active power has a full current rating and a low switching frequency. The auxiliary bridge circuit to improve the input current waveform has a small current rating and a high switching frequency. Because the high-frequency switching of the full current can be avoided in the hybrid rectifier, the EMI can be reduced. The effectiveness of the proposed hybrid PWM rectifier is demonstrated by some experimental results.
Keywords :
PWM power convertors; bridge circuits; electromagnetic interference; rectifying circuits; switching circuits; active power; auxiliary bridge circuit; auxiliary bridge circuits; electromagnetic interference reduction; full current rating; harmonic current; high switching frequency; hybrid PWM rectifier; hybrid rectifier; input current waveform improvement; low switching frequency; multi-connected rectifier; parallel-connected two component bridge circuits; small current rating; Bridge circuits; Electromagnetic interference; Mechanical engineering; Pulse width modulation; Pulse width modulation converters; Rectifiers; Switching circuits; Switching converters; Switching frequency; Voltage;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1043827
