Study and Implementation of a Bridgeless AC-Switch Power Factor Corrector with Voltage Doubler Rectification

• Main Authors: Cheng-Ting Lin, 林政廷
• Other Authors: Yu-Kang Lo
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/78551253167336486367

碩士 === 國立臺灣科技大學 === 電子工程系 === 101 === This thesis presents a novel bridgeless power factor corrector (PFC) topology. The purpose is to discuss whether we can improve the conversion efficiency by reducing the semiconductor components under existing control method and power device characteristics. The presented novel bridgeless PFC combines a bridgeless power factor corrector with a voltage doubler rectifier. Compared with the conventional bridge rectifier, this solution can improve the conversion efficiency at full load by removing two power diodes. The efficiency can reach 95% for the input voltage 115 Vac and 230 Vac, and even 98% at 230 Vac. A 750-W bridgeless AC-Switch PFC with voltage doubler rectification and 750-V output voltage is implemented. Also a 750-W bridgeless AC-Switch PFC with an output voltage of 380 V is built for comparison. Simulations and experimental results verify the correctness and feasibility of the control method and the loss analysis.