NDLI: Sensorless Control for High-Speed Brushless DC Motor Based on the Line-to-Line Back EMF

Content Provider	IEEE Xplore Digital Library
Author	Gang Liu Chenjun Cui Kun Wang Bangcheng Han Shiqiang Zheng
Copyright Year	1986
Abstract	A sensorless control method for a high-speed brushless DC motor based on the line-to-line back electromotive force (back EMF) is proposed in this paper. In order to obtain the commutation signals, the line-to-line voltages are obtained by the low-pass filters. However, due to the low-pass filters, wide speed range, and other factors, the actual commutation signals are significantly delayed by more than 90 electrical degrees which limits the acceleration of the motor. A novel sensorless commutation algorithm based on the hysteresis transition between “90-α” and “150-α” is introduced to handle the severe commutation retarding and guarantee the motor works in a large speed range. In order to compensate the remaining existing commutation errors, a novel closed-loop compensation algorithm based on the integration of the virtual neutral voltage is proposed. The integration difference between the adjacent 60 electrical degrees interval before and after the commutation point is utilized as the feedback of the PI regulator to compensate the errors automatically. Several experiment results confirm the feasibility and effectiveness of the proposed method.
Sponsorship	IEEE Power Electronics Society
Starting Page	4669
Ending Page	4683
Page Count	15
File Size	2402983
File Format	PDF
ISSN	08858993
Volume Number	31
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Commutation Hysteresis motors Brushless DC motors Rotors Sensorless control virtual neutral voltage. Brushless DC (BLDC) motor commutation errors line-to-line back EMF sensorless control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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