Design and Implementation of a Two-phase Interleaved Bridgeless Buck Power Factor Corrector
| Autor: | Jia-jyun Liou, 劉嘉峻 |
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| Rok vydání: | 2013 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 101 This thesis is focused on the design and implementation of a two-phase interleaved bridgeless buck power factor corrector (PFC) to achieve a high power factor, low input current harmonics, high efficiency and high power density. A two-phase interleaved bridgeless buck PFC features the advantages of a conventional single-phase PWM buck converter. In addition, the voltage and current ratings of the power switches, and the volumes of the inductors, output capacitors and EMI filters can be reduced. A 700-W bridgeless buck PFC and a 700-W two-phase interleaved bridgeless buck PFC are implemented in the laboratory. Experiments are conducted and satisfactory results are measured to confirm the effectiveness and the feasibility of the theoretical analysis and design considerations. The UC3842 is used as the control IC with a clamp-current feature for the PFC. Compared with other general boost converters, a buck converter requires smaller electrolyte capacitors at the output. It contributes to have more choices in the DC-DC converter design. Thus the two-phase interleaved PFC is especially suitable for serving as a pre-regulator in the high-power applications. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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