Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2007.10c
- /
- Pages.175-177
- /
- 2007
Drive Controller System in PM Motor with Independently Excited Winding for an Electric Bicycle
전기자전거용 독립여자권선 영구자석 전동기의 구동제어기 설계
- Choi, Jin-Wook (Dongseo University) ;
- Son, Young-Dae (Dongseo University) ;
- Kang, Gyu-Hong (GemTech Co., Ltd.)
- Published : 2007.10.25
Abstract
This paper presents for the torque characteristics and improving the efficiency of driving system of electric bicycle which applied IEWPM(Independently Excited Winding Permanent Magnet) motor. IEWPM motor can expand the number of phase from 3 phases to multiphase like SRM motor because stator windings are unconnected directly. BLDC motor raise rotor'-s electromagnetic torque per unit volume by using Spoke type permanent magnet. By using two photo sensor per phase and applying excited width, advance angle and bipolar control, we confirmed higher torque at a low speed, higher out-put at a high speed, and efficiency improvement at a wide speed control area.
Keywords