Variable Duty Cycle Control Quadratic Boost Power Factor Correction Converter
Chen Zhengge1, Xu Jianping1, Yang Ping2, Chen Zhangyong1
1. Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle Southwest Jiaotong University Chengdu 610031 China; 2. Department of Electronic and Information Engineering The Hong Kong Polytechnic University Hong Kong 999077 China
Abstract：Constant duty cycle control quadratic DCM-DCM Boost converter has much lower output voltage ripple than the traditional DCM Boost PFC converter. However, its power factor (PF) is worse than the traditional DCM Boost PFC converter and decreases sharply as the input voltage increases. This paper proposes a variable duty cycle control quadratic DCM-DCM Boost PFC converter, derives the expressions of PF and the output voltage ripple, and provides the corresponding implementation circuit by fitting the duty cycle. In 90~220V input voltage range, the PF of quadratic DCM-DCM Boost PFC converter with the proposed control is nearly to 1. Meanwhile the converter demonstrates small input inductor current ripple and low output voltage ripple. Experimental results verify the theoretical analysis.
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2016, Vol. 31 
