NDLI: Rotor position estimation scheme with harmonic ripple attenuation for sensorless controlled permanent magnet synchronous motors

Content Provider	IET Digital Library
Author	Lu, Qing Zhu, Xiaoyong Quan, Li Zuo, Yuefei Du, Sichen
Abstract	To achieve high-performance sensorless control of permanent magnet motors with non-sinusoidal back electromotive force (EMF), an improved sliding mode observer (SMO) adopting synchronous rotating low-pass filter (SRLPF) is proposed. The SRLPF is utilised to reduce the back-EMF harmonics and extract the fundamental component. Different from the traditional rotor position observer, the proposed observer can calculate the rotor position with the back-EMF fundamental component. Owing to the decrease in the influence of non-sinusoidal back-EMF, the estimated rotor position harmonic ripple error can be greatly reduced. Then, the high estimated accuracy and excellent sensorless control performance can be obtained. In addition, the proposed strategy is easy for implementation. With the comparison between the traditional SMO and the proposed observer, the experiments of the system steady-state error, the speed tracking performance, and the disturbance rejection ability in the speed range from 60 r/min to the rated speed 750 r/min are presented. The validity of the proposed method is conformed.
Starting Page	1200
Ending Page	1206
Page Count	7
ISSN	17518660
Volume Number	12
e-ISSN	17518679
Issue Number	Issue 8, Sep (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/12/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2017.0858
Journal	IET Electric Power Applications
Publisher Date	2018-05-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Back-EMF Fundamental Component Back-EMF Harmonics Control of Electric Power System Electric Potential Electromotive Force Force Control Harmonic Ripple Attenuation Harmonics Harmonics Suppression High-performance Sensorless Control Improved Sliding Mode Observer Low-pass Filter Mechanical Variables Control Multivariable Control System Nonsinusoidal Back Electromotive Force Observers Permanent Magnet Motors Position Control Power Harmonic Filter Power Supply Quality Rotor Position Estimation Scheme Rotor Position Harmonic Ripple Error Estimation Rotor Position Observer Rotors Sensorless Controlled Permanent Magnet Synchronous Motors Sensorless Machine Control SMO Spatial Variables Control Speed Tracking Performance SRLPF Synchronous Machine Synchronous Motors Synchronous Rotating Low-pass Filter Variable Structure System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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