Design of Controller for Ceiling Fan with Brushless DC Motor

• Main Authors: Zong-Cheng Lin, 林宗成
• Other Authors: 劉傳聖
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/853y54

碩士 === 國立虎尾科技大學 === 飛機工程系航空與電子科技碩士班 === 105 === The purpose of the thesis, contained the AC-DC converter and the blushless motor controller, is the study of a driver system of the brushless DC motor for the ceiling fan. The power supply of the ceiling fan is an AC-DC converter of the flyback topology widely used in the ceiling fan based the blushless motor. The flyback converter is more efficient than the linear voltage regulator. A UC3842 controller achieves the peak current mode control and the over current protection. The design of feedback controller is implemented and tested in this thesis. The power supply shows the good stability and performance either in the operation of the Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM). The fan controller uses digital hall sensor to detect 6-vector intervals of the rotors. The 16-pole brushless DC motor with the sinusoidal back Electromotive force (EMF) can deliver stable torque with a sin wave voltage by PI controller. The 24V power supply is common use, however the 150V high voltage supply which has small size for the ceiling fan controller is the better power approach.