Implementation and Study of High Step-up Converter with Regenevative Clamping

• Main Authors: Chia-Hao Liu, 劉佳豪
• Other Authors: Shih-Kuen Changchien
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/04232590861674046769

碩士 === 建國科技大學 === 電機工程系暨研究所 === 99 === A high step-up converter with regenerative clamping is proposed in this thesis. The proposed high step-up converter presents the characteristics of high step-up ratio, high efficiency and low voltage stress on power switch. The high step-up ratio is achieved by adjusting the turn ratio of coupled inductor and voltage doubler. Moreover, the energy stored in coupled inductor can be recycled during switching off period that the conversion efficiency is enhanced as well as the power switch is effectively clamped. The steady-state operation principle of the proposed high step-up converter is analyzed in detail in this thesis. Also, the voltage ratio and the boundary condition of the proposed converter are derived. Finally, a prototype of the proposed high step-up converter, with DC input 12V and DC output 200V/140W, is implemented and simulated to demonstrate the performances and feasibility. The results prove that the high step-up converter indeed presents the characteristics of high step-up ratio, high conversion efficiency, and low voltage stress on power switch.