NDLI: Enhanced sensor-less speed control approach based on mechanical offset for dual-stator brushless DC motor drives

Content Provider	IET Digital Library
Author	Saed, Nejat Mirsalim, Mojtaba
Abstract	In this study, the radial displacement of the stators is proposed to improve sensor-less speed control for dual-stator brush-less DC motor drives. The mechanical offset between stators leads to the double number of edges in the zero-crossing signal (ZCS) and thus, a more accurate speed estimation. Moreover, updating the speed in the control process will become faster that can decrease speed control error. As stators’ axes are displaced 90° electrical, the distance between ZCS edges becomes symmetrical. Therefore, it would provide a uniform estimated speed updating, and can effectively decrease speed ripple. Also, asymmetrical stators displacement can decrease speed ripple compared to the aligned structure when the distance between adjacent zero-crossing points is appropriate. In addition, stators displacement is well known as an efficient technique to decrease torque ripple. This idea is verified via computer simulations and experimental results.
Starting Page	885
Ending Page	892
Page Count	8
ISSN	17518660
Volume Number	14
e-ISSN	17518679
Issue Number	Issue 5, May (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/14/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2019.0625
Journal	IET Electric Power Applications
Publisher Date	2020-01-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acceleration Accurate Speed Estimation Angular Velocity Control Asymmetrical Stators Displacement Brushless DC Motor Control of Electric Power System D.C. Machines DC Motor Drive Drive Dual-stator Brush-less DC Motor Drive Dual-stator Brushless DC Motor Drive Enhanced Sensor-less Machine Control Mechanical Variables Control Radial Displacement Rotation Control Speed Control Error Speed Ripple Stators Torque Torque Control Uniform Estimated Speed Updating Velocity Velocity Control Zero-crossing Signal
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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