A Novel Battery Charge/Voltage Boost Converter Applied to Hybrid Motorcycle

• Main Authors: Chung - Kang Lee, 李仲剛
• Other Authors: 陳宗成
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/xh24r2

碩士 === 國立虎尾科技大學 === 電機工程研究所 === 96 === A novel battery charge/voltage boost converter is proposed in the thesis, which is applied to a system of hybrid motorcycle. The charger is composed of Flyback and Boost converters. First, when the hybrid motorcycle is operated in engine driving mode, in order to prolong the life time of battery ,the generator of the hybrid system supplies power to charge a lead-acid battery of 12V by using a positive/negative pulse charging technique. In the same operating mode, the energy is released from the battery side to the primary capacitor at the negative pulse discharging operation. Secondly, when the hybrid motorcycle is operated in the electric motorcycle mode, the 12V battery is boosted to drive a 48V dc motor. Use of the boost converter reduces quantity of the battery and weight of the motorcycle. Furthermore, in order to reduce circuit complexity and cost of the system, a dsPIC30F4011 chip is used to implement a digital control circuit. Finally a small signal analysis of the proposed charger with voltage boost converter and some experimental results are presented to prove the effectiveness of the implementation.