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고효율 DC/DC 컨버터용 전류분할과 시분할 스위치 비교 연구
Comarative Study on Current or Time Sharing Switches for High Efficiency DC/DC Converter
고성훈 ( Sung Hun Ko ) , 조성필 ( Sung Pil Cho ) , 이수원 ( Su Won Lee ) , 이성룡 ( Seong Ryong Lee )
UCI I410-ECN-0102-2012-560-002602191

This paper presents a comparative analysis of the parallel operation of different switches in a DC/DC converter. In high power applications, multi-switch PWM power conditioners may be preferred despite a higher component count, due to the absence of low frequency filters, reduced switching losses and fault tolerance. The paper demonstrates how current sharing (CSH) and time sharing (TSH) lead to the reduction of switching stress in the parallel operation of switches in any converter. The solutions proposed in this study can be applied on different scales to other power conditioners for DC/DC converter systems. Discussions of the concepts, hypotheses and computer simulations are verified by 1 kW experimental results.

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