Implementation of a sliding-mode-based position sensorless drive for high-speed micro permanent-magnet synchronous motors

Due to issues such as limited space, it is difficult if it is not impossible to employ a position sensor in the drive control of high-speed micro PMSMs. In order to alleviate this problem, this paper analyzes and implements a simple and robust position sensorless field-oriented control method of hig...

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Bibliographic Details
Published in:ISA transactions 2014-03, Vol.53 (2), p.444-453
Main Authors: Chi, Wen-Chun, Cheng, Ming-Yang
Format: Article
Language:English
Subjects:
Algorithms
Angular position
Computer Simulation
Convergence
Dental Instruments
Electronics
Equipment Design
High speed
Magnetics
Magnets
Micro permanent-magnet synchronous motor
Models, Statistical
Motors
Observers
Position sensing
Position sensorless control
Rotors
Sliding-mode observer
Surgical instruments
Synchronous motors
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Summary:Due to issues such as limited space, it is difficult if it is not impossible to employ a position sensor in the drive control of high-speed micro PMSMs. In order to alleviate this problem, this paper analyzes and implements a simple and robust position sensorless field-oriented control method of high-speed micro PMSMs based on the sliding-mode observer. In particular, the angular position and velocity of the rotor of the high-speed micro PMSM are estimated using the sliding-mode observer. This observer is able to accurately estimate rotor position in the low speed region and guarantee fast convergence of the observer in the high speed region. The proposed position sensorless control method is suitable for electric dental handpiece motor drives where a wide speed range operation is essential. The proposed sensorless FOC method is implemented using a cost-effective 16-bit microcontroller and tested in a prototype electric dental handpiece motor. Several experiments are performed to verify the effectiveness of the proposed method. •A position-sensorless control drive for micro PMSMs is implemented.•The angular position/velocity of the rotor of the micro PMSM is estimated using the sliding-mode observer.•The position sensorless FOC method is implemented using a cost-effective 16-bit microcontroller.•Experimental results verify the effectiveness of the proposed scheme over the entire speed range from 2000 to 40,000RPM.
ISSN:0019-0578
1879-2022
DOI:10.1016/j.isatra.2013.09.017