Title :
Mode analysis and optimal design of LCC resonant converter operating in DCM
Author :
Xing Tan ; Xinbo Ruan
Author_Institution :
State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
LCC resonant converter operating in discontinuous current mode (DCM) can realize zero current switching (ZCS) turn-on and turn-off of power switches and ZCS turn-off of rectifier diodes. Therefore, the converter is suitable for high power switching power supplies where IGBT are employed as the power switches. This converter has three main operating modes, two of which have been analyzed and designed respectively in previous literatures to reduce component stresses and improve the converter efficiency at the full load. As the operating mode is related to load, this paper considers all of the three operating modes to analyze and design the converter. This design reduces RMS current of resonant inductor in the entire load range, therefore improves converter efficiency in the entire load range. A 5 kW, 50 V prototype is built to validate the effectiveness of this design method.
Keywords :
power semiconductor switches; rectifying circuits; resonant power convertors; switching convertors; zero current switching; DCM; IGBT; LCC resonant converter; RMS current reduction; ZCS turn-off; ZCS turn-on; component stress reduction; discontinuous current mode; high power switching power supplies; mode analysis; optimal design; power 5 kW; rectifier diodes; resonant inductor; voltage 50 V; zero current switching; Capacitors; Inductors; RLC circuits; Switches; Switching frequency; Switching loss; Zero current switching; DCM; LCC resonant converter; efficiency in the entire load range; high power; operating modes; optimal design;
Conference_Titel :
Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE
Conference_Location :
Vienna
DOI :
10.1109/IECON.2013.6699269
