DocumentCode :
1932173
Title :
A new soft-switched ZCZVT DC-AC inverter
Author :
Rahimi, Khalil ; Motlagh, Ali Nazeran ; Pakdel, Majid
Author_Institution :
Telecommun. Co. of Esfahan, Esfahan, Iran
fYear :
2009
fDate :
7-10 Sept. 2009
Firstpage :
1338
Lastpage :
1344
Abstract :
This paper proposes a new auxiliary commutation cell for PWM inverters that allows the main switches to be turned on and off at zero voltage and zero current. The main switches zero current turn-on reduces the undesired effects of parasitic inductances related to the circuit layout. The main diodes reverse recovery losses are minimized since di/dt and dv/dt are controlled. The ZCZVT commutation cell is located out of the main power path of the converters and is activated only during switching transitions. Additionally, the auxiliary switches are turned on and off at ZCS and use the same ground signals of the upper main switches. The commutation losses are practically reduced to zero. Soft switching operation is guaranteed for full load range without changes in command strategy. The operation of the ZCZVT PWM full-bridge DC-AC Converter is analyzed and an auxiliary commutation cell design procedure based on the analysis is proposed. Simulation results are presented to demonstrate the feasibility of the proposed ZCZVT DC-AC inverter.
Keywords :
DC-AC power convertors; PWM invertors; zero current switching; PWM full-bridge DC-AC converter; auxiliary commutation cell; circuit layout; parasitic inductances; soft-switched ZCZVT DC-AC inverter; Acoustic noise; Filters; Frequency; Pulse width modulation inverters; Switches; Switching circuits; Switching loss; Telecommunication switching; Zero current switching; Zero voltage switching; DC-AC Inverter; Soft Switching; ZCZVT;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicle Power and Propulsion Conference, 2009. VPPC '09. IEEE
Conference_Location :
Dearborn, MI
Print_ISBN :
978-1-4244-2600-3
Electronic_ISBN :
978-1-4244-2601-0
Type :
conf
DOI :
10.1109/VPPC.2009.5289447
Filename :
5289447
Link To Document :
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