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DSP Control a ZVT Soft-Switching PFC Converter
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| Author(s) |
Ya-Tsung Feng, Yo-Ming Chen, Hsing-Fu Liu, Ying-Yu Tzou |
| Abstract |
This paper presents the design of a DSP-controlled zero-voltage-transition power factor correction (PFC) converter used for high-performance communication equipment. The designed PFC converter can achieve high power factor with fast dynamic response for output voltage regulation. Zero-voltage-transition soft-switching technique has been applied to reduce the switching losses of the auxiliary switching circuit for a single-phase ac-dc converter with unit power factor. The operation principle, digital control scheme, and experimental verification of the proposed soft-switching PFC converter have been given. A 2 kW, 200 kHz, soft-switching PFC converter has been constructed. An efficiency of 94% at rated output power has been measured. Experimental results show the proposed digital control scheme can achieve a very high efficiency for power factor correction. |
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| Filename: | EPE-PEMC2000 - 221 - Ya-Tsung.pdf |
| Filesize: | 526.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-28 by System |
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