高效率電源供應器之研製

本篇論文主要是研製一高效率之電源供應器。此電源供應器之結構包含電磁干擾濾波器，可以有效減少系統端雜訊所導致的電磁干擾問題。使用準諧振返馳式轉換電路，並搭配同步整流技術，使二次側功率損耗明顯降低，提高整體轉換效率，並針對不同負載下效率提升方法說明。最後，本論文以輸入交流90 V~132 V、輸出直流電壓5V、輸出功率12 W等為所提之高效率低待機損耗之電源供應器規格，實際完成並測試驗證效率大於90 %，確實可符合現今所有能源法規及能源之星規範的要求。

關鍵字

準諧振返馳式轉換器；同步整流

並列摘要

The purpose of the thesis is to develop a slim type power supply with high efficiency. The power supply is constructed with an electromagnetic interference (EMI) filter which can efficiently reduce EMI issues caused by the system. The thesis adopts a quasi-resonant flyback converter circuit and operates with a synchronous rectification technique. As a result, the power consumption on the secondary circuit has been significantly reduced and the efficiency of power supply can be raised. Describe efficiency raise under difference load. In conclusion, the thesis implements a slim type power supply with high efficient which specifications include input voltage range of 90~132 Vac and output of 5 Vdc / 12 W. The practice power supply is implemented to test and verify the compliance the efficiency greater than 90% with the EPA requirements and Energy Star regulations.

並列關鍵字

Quasi-Resonant Flyback Converter ； Synchronous Rectification

參考文獻

[8] M. H. Rashid 著，張天錫譯，"電力電子學第三版"，台北，東華書局，2004。

[9] J. Zhang, X. Huang, X. Wu and Z. Qian, "A High Efficiency Flyback Converter With New Active Clamp Technique," IEEE Trans. on Power Electron., vol. 25, no. 7, pp. 1775-1785, Jul. 2010.

[10] J. W. Kim, "Series Input Parallel Output Interleaved Flyback Converter with Regenerative Leakage Inductance Energy," in Proc. ECCE Asia, pp. 1347-1352, Jun. 2012.

[11] Y. C. Hsieh , M. R. Chen and H. L. Cheng, "An Interleaved Flyback Converter Featured with Zero-voltage Transition," IEEE Trans. Power Electron., vol. 26, no. 1, pp.79- 84 2011.

[12] G. B. Koo, "A New Valley-detection Method for the Quasi-resonance Switching," in Proc. APEC, pp. 540-543, Feb. 2010.

國際替代計量

高效率電源供應器之研製

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