Implementation of PCB Stator Winding for Axial-Flux Motor in Electrical-Bike Application

• Main Authors: Yang, Fu-Tzuen, 楊甫尊
• Other Authors: Tzou, Ying-Yu
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/22741680378464101877

碩士 === 國立交通大學 === 電控工程研究所 === 100 === This thesis presents an analysis and discussion of the axial-flux motor used on electrical-bike and adopted a coreless design. Therefore, the stator winding fix by a special resin instead of traditional silicon steel. It causes the stator winding can’t be mass produced and have quality variations. In order to improve this problem, this thesis presents a design of the axial-flux motor used on electrical-bike with printed circuit board (PCB) stator winding to instead of copper wire in the same rotor flux distribution, including PCB stator winding design method, test experiment prototype setup and analysis of PCB stator winding prototype test results. By regarding the analysis of shape and position of permanent magnets, power density, torque constant and basic parameters to develop a better PCB stator winding layout. In motor test, the generation mode, measure the tri-phase back-emf to calculate and estimate the back-emf constant, total harmonic distortion (THD), flux distribution and motor *parameters. The results infer that the back-emf is similar to a sine wave and THD is about 7%. Then setup a control system with linear hall-effect sensors and sinusoidal PWM control strategy to drive this motor with a single PCB stator winding. By simulation and experiment to test and analyze the current response, motor performance, skin-effect and temperature, etc. The test and experiment results verifies the feasibility and performance of the axial-flux motor with PCB stator winding.