Title :
Novel zero-current-switching (ZCS) PWM switch cell minimizing additional conduction loss
Author :
Choi, Hang-Seok ; Cho, B.H.
Author_Institution :
Dept. of Electr. Eng., Seoul Nat. Univ., South Korea
fDate :
6/23/1905 12:00:00 AM
Abstract :
This paper proposes a new zero-current switching (ZCS) pulse width modulation (PWM) switch cell that has no additional conduction loss of the main switch. In this cell, the main switch and the auxiliary switch turn on and turn off under zero current condition. The diodes commutate softly and the reverse recovery problems are alleviated. The conduction loss and the current stress of the main switch are minimized, since the resonating current for the soft switching does not flow through the main switch. Based on the proposed ZCS PWM switch cell, a new family of DC to DC PWM power converters is derived. The new family of ZCS PWM converters is suitable for the high power applications employing IGBTs. Among the new family of DC to DC PWM converters, a boost converter was taken as an example and has been analyzed. Design guidelines with a design example are described and verified by experimental results from the 2.5 kW prototype boost converter operating at 40 kHz
Keywords :
DC-DC power convertors; PWM power convertors; insulated gate bipolar transistors; power bipolar transistors; switching circuits; 2.5 kW; 40 kHz; IGBTs; PWM switch cell; ZCS; applications; boost converter; conduction loss; design guidelines; pulse-width modulation; resonating current; soft diode commutation; turn off; turn on; zero-current switching; Diodes; Guidelines; Insulated gate bipolar transistors; Pulse width modulation; Pulse width modulation converters; Space vector pulse width modulation; Stress; Switches; Switching converters; Zero current switching;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954229
