Title :
Commutation performance of current source converters for switched reluctance motor drives
Author :
Jang, Do-Hyun ; Choe, Gyu-Ha ; Kim, Ki-Su ; Choi, Ju-Yeop
Author_Institution :
Dept. of Electr. Eng., Hoseo Univ., Chung-Nam, South Korea
Abstract :
The commutation operation of the current source converter for switched reluctance motor drives is analyzed in this paper. The commutation operation in the current source converter consists of two modes. At turn-off of phase switch, the phase current decreases sinusoidally, and the sum of two phase currents during commutation period is constant. Frequency of step-down DC chopper in the link of current source converter is low because of the dump inductor. A few switches are needed, and power devices with low switching frequency such as BJTs and GTOs could be used as phase switches instead of power MOSFETs and IGBTs, which result in reductions of switching losses and manufacturing cost compared to the voltage source converter
Keywords :
bipolar transistor switches; choppers (circuits); commutation; losses; power bipolar transistors; power convertors; power semiconductor switches; reluctance motor drives; thyristor convertors; BJT; GTO; commutation operation; commutation period; current source converters; low switching frequency; manufacturing cost reduction; phase current decrease; phase switch turn-off; power devices; step-down DC chopper frequency; switched reluctance motor drives; switching losses reduction; Choppers; Commutation; Frequency conversion; Inductors; Insulated gate bipolar transistors; MOSFETs; Reluctance motors; Switches; Switching converters; Switching frequency;
Conference_Titel :
Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-7803-3840-5
DOI :
10.1109/PESC.1997.616830
