Design and Implementation of Single-Phase Full-Wave Brushless DC Fan Motor Driver

• Main Authors: Hsieh-ying Chang, 張纈贏
• Other Authors: Tzuen-Lih Chern
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/89631521869043462585

碩士 === 國立中山大學 === 電機工程學系研究所 === 95 === This thesis focuses on compact brushless DC fan motor, drive circuit structure of motor is proposed, several functions such as output low current limit circuit and low rotation speed limit are added in order to increase robustness of drive circuit. Besides, speed feedback controller is used to solve several problems such as high frequency full speed exciting noise and high power dissipation which occurs in open loop rotation speed control circuit.With regard to BLDC fan motors generally use Hall sensor to detect rotor position, this research proposes sensorless control technology for the purpose of reducing circuit cost and motor size.