Development of Wireless Power Transfer System for Electric Scooters

• Main Authors: Tsai,Jia-Shiun, 蔡佳勳
• Other Authors: Hu,Jia-Sheng
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/24824021917727779435

碩士 === 國立臺南大學 === 綠色能源科技學系碩士班 === 102 === The goal of this paper is to design a wireless power transfer system for electric scooters which was based on the magnetic resonant coupling theory. Using a lower cost way to produce the circuit, the electric scooter may bring more convenient to the user and the system is suitable for any 48v/20Ah electric scooter. In this research, the system’s operation frequency can be satisfied to the standard of 85kHz which is required by SAE J2954, making the wireless power transfer system a safety standard and bring us a pleasant charging process. One circular antenna/receiver pair is designed to meet the requirements of scooter-using scenarios. The emitting coil were setup under the chassis of scooter, and the receiving coils were embedded in the bottom layer of the chassis where the air gap between two coils is larger than 10cm. We also designed a 3D directional antenna which is improved from general antennas. Leading the magnetic field emission lines directly to the receiving coil effectively, and enhance the charging efficiency and safety of the wireless charging system on the electric scooters。