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標題Title: Optimal Commutation of a BLDC Motor by Utilizing the Symmetric Terminal Voltage
作者Authors: 陳怡君
上傳單位Department: 電機工程系
上傳時間Date: 2010-12-24
上傳者Author: 陳怡君
審核單位Department: 電機工程系
審核老師Teacher: 王明賢
檔案類型Categories: 研究生論文報告Thesis
關鍵詞Keyword: Brushless DC motor, commutation, efficiency, sensorless control, torque.
摘要Abstract: This paper presents a method to determine the improved commutation position of a brushless DC (BLDC) motor in such a way as to
generate the symmetric terminal voltages of the nonenergized phase at the beginning and end of the commutation period. If the BLDC
motor is energized at the exact commutation position, the terminal voltage of the nonenergized phase at the beginning of commutation is
equal to the terminal voltage at the end of commutation, and the waveform of the terminal voltage should be symmetric. This paper also
develops a DSP-based sensorless BLDC motor controller to implement the proposed method and to verify its effectiveness experimentally.
This research shows that the proposed method improves the performance of a BLDC motor by increasing torque and efficiency.

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2010_12_3d1cdde4.ppt 898Kb ppt 294 505
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