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標題Title: Commutation Control for the Low-Commutation Torque Ripple in the Position Sensorless Drive of the Low-Voltage Brushless DC Motor
作者Authors: 石幸昀
上傳單位Department: 電機工程系
上傳時間Date: 2014-11-26
上傳者Author: 石幸昀
審核單位Department: 電機工程系
審核老師Teacher: 王明賢
檔案類型Categories: 課堂報告In-class Report
關鍵詞Keyword: Brushless direct current (BLDC) motor, electromagnetic torque ripple, position sensorless drive, variable-speed drive
摘要Abstract: This paper discusses a commutation control method
aimed at reducing the commutation torque ripple in sensorless
drive of brushless direct current motors. These motors are generally used for low-cost applications because of relatively high
efficiency and low manufacturing cost. On the other hand, they
show a high torque ripple characteristic caused by nonideal commutation currents. This limits their application area, especially
for low-voltage applications. In order to minimize torque ripple
for the entire speed range, a comprehensive analysis of commutation torque ripple was made according to three commutation
control methods whereupon an optimal current vector trajectory
for low torque ripple was devised. The effectiveness of the proposed
method was verified through simulation and experimental results

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2014_11_02d1bd15.ppt 9851Kb ppt 49 24
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