NDLI: A simple approach to sensorless control for permanent magnet synchronous motors

Content Provider	IEEE Xplore Digital Library
Author	Ming-Shyan Wang Chich-Hung Wang Wei-Ting Yeh Wei-Ting Sung Jia-Je Tsai
Copyright Year	2012
Description	Author affiliation: Department of Electrical Engineering, Southern Taiwan University, Taiwan (Ming-Shyan Wang; Chich-Hung Wang; Wei-Ting Yeh; Wei-Ting Sung; Jia-Je Tsai)
Abstract	Traditionally, encoders or resolvers are used to get the position feedback in permanent magnet synchronous motor (PMSM) drives. However, due to the drawbacks associated with these sensors, significant research has been conducted in the area of sensorless control. Most of the sensorless control methods such as neural network, particle swarm optimization, sliding-mode observer, or their combinations, require sophisticated algorithms to achieve the estimation of rotor position. In this paper, a simple approach is proposed to obtain its primitive value by adopting necessary current sensors and the 120-degree difference relationship between the two phase current signals. The estimated rotor angle is given by proportionally tuning the position error for considering the factors of speed command and speed sampling period. As a result, the complexity and computing ability of the processor used in the drive will be reduced and cheaper at the product stage. Furthermore, the conventional proportional-plusintegral (PI) control is adopted for the controlled system. With the aid of Bode diagram, an extension of the frequency zone-based method can decouple the multiple tuning gains so that the PI gain constants may be adjusted individually. Finally, the experimental results of the proposed method implemented in a DSP-based motor drive system with a 2-kg disc load are presented to show the effectiveness.
Starting Page	531
Ending Page	535
File Size	146643
Page Count	5
File Format	PDF
ISBN	9781457719684
e-ISBN	9781457719677
DOI	10.1109/ICIAS.2012.6306072
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-12
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Torque Rotors Sensorless control Observers Permanent magnet motors Synchronous motors
Content Type	Text
Resource Type	Article

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