Design and implementation of three-phase half-bridge power factor correctors with balance of the output split capacitors

• Main Author: 陳星光
• Other Authors: 羅有綱
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/72627367355144095415

碩士 === 國立臺灣科技大學 === 電子工程系 === 89 === In this thesis, the design and implementation of three-phase half-bridge power factor correctors with balance of the output split capacitors is presented. The studied circuit system is able to efficiently convert the three-phase AC input into two regulated output DC voltages. A new four-switch topology utilizing the nature of the balance for a three-phase system is adopted to improve the three-phase power factor. The presented system features simple control circuits. A current-mode hysteresis band controller is used to obtain the switching signals for the switches in order to control the input currents rapidly. We also implement a balance control circuit to eliminate the imbalance phenomenon between the two output capacitors . The experimental results and simulations are given to verify the theoretical discussions.