Title :
Comparison of ZVS operation modes with and without phase shift for three-level resonant converters
Author :
Sheng, Honggang ; Fu, Dianbo ; Yang, Xu ; Wang, Fred ; Lee, Fred C.
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA
Abstract :
Three-level resonant converters combine the desired features of low voltage stress and low switching loss and are suitable for high power high voltage applications. Phase-shift (PS) and nonphase-shift (NPS) operation modes are both used in three-level resonant converters. In this paper, the two operation modes are analyzed and compared for a three-level parallel resonant converter, with respect to power losses, component stresses, and parasitics impacts. Results show that the converter can achieve more benefits operating in the NPS operation mode. The experimental results using a 200 kHz, 30 kW DC/DC converter validate the theoretical analysis. The results can be extended to other three-level resonant converters
Keywords :
DC-DC power convertors; phase shifters; resonant power convertors; zero voltage switching; 200 kHz; 30 kW; ZVS operation modes; high power application; high voltage application; low switching loss; low voltage stress; nonphase-shift operation modes; phase-shift operation modes; three-level parallel resonant converter; Leg; Partial response channels; Resonance; Stress; Switches; Switching converters; Switching frequency; Switching loss; Topology; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-9547-6
DOI :
10.1109/APEC.2006.1620523
