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A Zero Current Ripple Tapped Inductor Power Factor Correction Converter |
Lin Tong1, Jiang Ping2, Yao Jia1 |
1. School of Automation Nanjing University of Science and Technology Nanjing 210094 China; 2. Nanjing Chen Guang Group Nanjing 210006 China |
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Abstract In order to reduce the input current ripple and improve the EMI performance of traditional Boost power factor correction (PFC) converter, a zero current ripple tapped inductor (TI) PFC converter was proposed. First, the operation principle of the proposed PFC converter was studied. The current ripple cancellation network employed a tapped inductor and a series-connected LC filter. Since the inductance does not participate in the main power transmission, the LC filter in the proposed topology is much smaller than the conventional Boost PFC input LC filter. Detailed design consideration of the proposed converter for PFC purpose is presented. Secondly, considering the feature of the extreme low input current ripple, the one-cycle control (OCC) strategy is realized by a digital controller. Finally, the prototype of the proposed zero current ripple PFC converter and the conventional Boost PFC converter were compared. It is shown that the proposed converter has approximately “zero” input current ripple, smaller size, much lower THD, and significantly improved power factor (PF).
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Received: 05 November 2021
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