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A Soft-Switched High Step-Up Quadratic Boost Converter with Auxiliary Circuit |
Zhang Jianfeng, Xu Jianping, Zhou Xiang, Yang Ping, Li Ninghao |
The Ministry of Education Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle Southwest Jiaotong University Chengdu 610031 China |
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Abstract By adding an auxiliary circuit to the novel quadratic Boost converter based on the reduced redundant power processing (R2P2) principle, a soft-switched high step-up quadratic Boost converter with auxiliary circuit is proposed in this paper. This converter can not only reduce the overall power loss but also achieve zero-voltage-switched (ZVS) turn-on of active switches and zero-current-switched (ZCS) turn-off of output diodes, reducing switching loss. Owing to the output-series of the auxiliary circuit and the novel quadratic converter, the proposed converter can achieve high voltage gain and low switch stress. Thus, a low-voltage-rated MOSFET can be utilized to improve the efficiency and reduce the cost. The operating characteristics of steady-state, requirement of the ZVS and the duty ratio loss of the proposed converter are analyzed in detail. Experimental results of a 100W prototype are presented to verify the analysis of the proposed converter.
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Published: 16 January 2018
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Fund:国家自然科学基金项目(51177140、61371033)和中央高校基本科研业务费专项资金科技创新项目(2682015CX024)资助 |
Corresponding Authors:
张建丰 男,1991年生,硕士研究生,研究方向为电力电子与电力传动。E-mail: jfzhang_pece@163.com
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