Next Article in Journal
Risk Assessment and Its Visualization of Power Tower under Typhoon Disaster Based on Machine Learning Algorithms
Previous Article in Journal
Partial Shading Detection and Global Maximum Power Point Tracking Algorithm for Photovoltaic with the Variation of Irradiation and Temperature
Previous Article in Special Issue
On Speed Control of a Permanent Magnet Synchronous Motor with Current Predictive Compensation
Article Menu
Issue 2 (January-2) cover image

Export Article

Open AccessArticle
Energies 2019, 12(2), 203; https://doi.org/10.3390/en12020203

Commutation Error Compensation Strategy for Sensorless Brushless DC Motors

College of Automation, Harbin Engineering University, Harbin 150001, China
*
Author to whom correspondence should be addressed.
Received: 27 November 2018 / Revised: 4 January 2019 / Accepted: 4 January 2019 / Published: 9 January 2019
(This article belongs to the Special Issue Permanent Magnet Synchronous Machines)
Full-Text   |   PDF [8618 KB, uploaded 16 January 2019]   |  

Abstract

Sensorless brushless DC (BLDC) motor drive systems often suffer from inaccurate commutation signals, which result in current fluctuation and high conduction loss. To improve precision of commutation signals, this paper presents a novel commutation error compensation strategy for BLDC motors. First, the relationship between the line voltage difference integral in 60 electrical degree conduction interval and the commutation error is analyzed. Then, in terms of the relationship derived, a feedback compensation strategy based on the line voltage difference integral is proposed to regulate commutation signals by making three-phase back electromotive force (EMF) integral to zero, and the effect of the freewheeling process on the line voltage difference integral is considered. Moreover, an incremental PI controller is designed to achieve closed-loop compensation for the commutation error automatically. Finally, experiment results verify feasibility and effectiveness of the proposed strategy. View Full-Text
Keywords: brushless DC (BLDC) motor; sensorless motor; commutation error compensation; free-wheeling period brushless DC (BLDC) motor; sensorless motor; commutation error compensation; free-wheeling period
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Yao, X.; Zhao, J.; Lu, G.; Lin, H.; Wang, J. Commutation Error Compensation Strategy for Sensorless Brushless DC Motors. Energies 2019, 12, 203.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top