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Impedance Analysis and Resonance Mitigation for Sample-Correction-Based Boost Power Factor Correction Converters
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| Author(s) |
Tianhua ZHU, Xiongfei WANG, Fangzhou ZHAO, Grover TORRICO |
| Abstract |
This letter analyzes the input impedance of digitally controlled boost power factor correc-tion (PFC) converters, with a particular focus on the impact of current sampling. It is revealed that the use of a correction factor with current sampling brings a non-dissipative region to the input impedance of PFC converter when the load is heavy. Consequently, un¬de¬sired high-frequency resonances may arise in the input current of PFC converter. To mitigate the reso¬nance, an enhanced current-sampling correction method is proposed and validated by experi¬mental tests. |
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| Filename: | 0029-epe2023-full-09210101.pdf |
| Filesize: | 2.169 MB |
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| Type |
Members Only |
| Date |
Last modified 2023-09-24 by System |
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