Design and Implementation of Variable Winding Motor Driver with Regenerative-Brake

• Main Authors: Sheng-Jia Yan, 顏聖家
• Other Authors: 楊銘基
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/qnr96v

碩士 === 國立臺北科技大學 === 車輛工程系所 === 102 === This study proposes a novel method of the electric brake with energy-regeneration for the brushless DC motor (BLDCM) of the electric scooter (E-Scooter). The proposed method could convert the kinetic energy into the electric one to recover the battery during the braking period. Thus, the driving range of the electric scooter can be increased by the method of the energy-regeneration; furthermore, the safety and comfort of the driver could be improved by the electric brake. The proposed method could change the switching signals of motor driver to control the inverse torque during the braking period. Compared with the presented methods, the proposed solution achieves the goal of the energy-regeneration without additional converter or changing windings of the motor stator. In addition to the braking period, the period of release throttle is included in the energy-regeneration mechanism such that the electric scooter has a similar function of the engine brake for the driving safety. Furthermore, the battery may be injured by the surge regeneration current in the high speed duration. Therefore, the proposed strategy could control the current to protect the battery and provides a smooth and reliable brake. The system drives electric vehicles of the variable winding motor, while analyses the wye connected status and delta connected state.