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Conduction loss, which is greatly affected by transformer stray capacitance, has a huge influence on the efficiency of LLC resonant converters. The reason is that different transformer stray capacitance means different winding charge or discharge during the dead time, and then the magnetizing current and the dead time are changed accordingly. In order to investigate the impact of transformer stray...
In this paper, a new approach for optimizing the LLC resonant converter for achieving maximum efficiency in a desired load is proposed. Generally, the optimum value of the load is chosen near the full load condition to reduce the converter overall cost and consumption. Beside the inductor and transformer core and copper losses, the conduction and switching losses of the power switches and diodes and...
This paper deals with simulation model of the LLC resonant converter with frequency of 300kHz. The results of the simulation analysis are compared with results obtained from measurement on the real physical sample of proposed converter. The simulation model consists of three fundamental parts: rectangle impulses generator, resonant circuit with high-frequency transformer and the output rectifier....
High conversion efficiency is desired in switch mode power supply converters. Computer-aided design optimization is emerging as a promising way to design power converters. In this work a systematic optimization procedure is proposed to optimize LLC series resonant converter full load efficiency. A mode solver technique is proposed to handle LLC converter steady-state solutions. The mode solver utilizes...
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