Unattenuated BEMF detection for sensorless brushless DC (BLDC) motor drives

被引：0
|
作者：
Zhou, GF [1 ]
Wu, ZG [1 ]
Ying, JP [1 ]
机构：
[1] Delta Power Elect Ctr, Shanghai 201209, Peoples R China
来源：
IPEMC 2004: THE 4TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE, VOLS 1-3, CONFERENCE PROCEEDINGS | 2004年
关键词：
sensorless BLDCM drive; BEMF; ZCP;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper develops an unattenuated BEMF detection method for sensorless BLDC motor drive. The unattenuatted BEMF can be directly obtained from the terminal voltage of the floating phase without voltage-dividing and filtering. As a result, this approach makes it possible to detect the rotor position over a wide speed range, especially at a lower speed. A simply correction is proposed to asymmetry BEMF ZCP detection due to parasitic capacitance and discontinuous current at light load. The detailed schemes are analyzed and verified by experimental results.
引用
收藏
页码：1292 / 1297
页数：6
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