NDLI: Sliding mode observer for sensorless control of surface permanent magnet synchronous motor equipped with LC filter

Content Provider	IET Digital Library
Author	Xu, Yongxiang Wang, Minghui Zhang, Wentao Zou, Jibin
Abstract	This study proposes a sliding mode observer (SMO) based method for sensorless speed control of surface permanent magnet synchronous motor equipped with LC filter. To deal with side effects of pulse width modulation technique, LC filters are equipped between inverters and motors in some industrial applications. Therefore, filter input currents rather than stator currents will be measured by current sensors on the inverter board. Sensorless operation becomes complicated due to the differences between filter input and stator currents. When only inverter-side current sensors are installed, the mathematical model of the LC filter should be considered. Hereby, the proposed SMO takes the LC filter into consideration, so additional measurement of stator currents is not necessary. Back electromotive forces of the PMSM are estimated by the SMO, and the rotor speed and position are calculated by the phase locked loop. The proposed approach features simplicity, and it is suitable for medium- and high-speed ranges. Simulation and experimental results confirm the effectiveness of the proposed method.
Starting Page	686
Ending Page	692
Page Count	7
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 4, Apr (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5218
Journal	IET Power Electronics
Publisher Date	2018-12-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acceleration Angular Velocity Control Back Electromotive Forces Control of Electric Power System Demodulator Discriminators And Mixers Filter Input Current Inverter Inverter-side Current Sonsor Invertors LC Circuit LC Filter Modulator Observers Permanent Magnet Motors Phase Locked Loop PMSM Pulse Width Modulation Technique Rotation Control Rotor Speed Rotors Sensorless Control Sensorless Machine Control Sensorless Speed Control Sliding Mode Observer Based Method SMO Stator Current Stators Surface Permanent Magnet Synchronous Motor Synchronous Machine Synchronous Motors Variable Structure System Velocity
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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