NDLI: Sliding mode control with open-switch fault diagnosis and sensorless estimation based on PI observer for PMSM drive connected with an LC filter

Content Provider	IET Digital Library
Author	Wang, Minghui Xu, Yongxiang Zou, Jibin
Abstract	In some cases, LC filters are installed between the inverters and motors to suppress the adverse effects of pulse width modulation. However, some techniques should be modified, because the mathematical model of the drive system is changed by the LC filter and the sensors on the inverter output cannot measure some necessary variables. In this study, a multi-purpose proportional-integral (PI) observer is proposed at first. The type of observer depends on whether the position sensor is equipped. A sliding mode controller for the LC filter based on the observer is presented, therefore improving the dynamic performance. Furthermore, if the position sensor of the rotor is equipped, an open-switch fault diagnostic method is realised by means of the PI observer; if the position sensor is not equipped, the sensorless estimation is realized. The proposed strategies were realised without any additional current/voltage sensors. Experimental results verified the effectiveness of the proposed strategies.
Starting Page	2334
Ending Page	2341
Page Count	8
ISSN	17554535
Volume Number	13
e-ISSN	17554543
Issue Number	Issue 11, Aug (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/13/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2019.1233
Journal	IET Power Electronics
Publisher Date	2020-05-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acceleration Angular Velocity Control Closed Loop System Control of Electric Power System Control Scheme Drive Dynamic Performance Electric Drive System Fault Diagnosis Inverter Invertors LC Filter Modelling And Identification Motor Drive Multipurpose Proportional-integral Observer Multivariable Control System Observer-based Fault Diagnosis Observers Open-switch Fault Diagnostic Method Permanent Magnet Motors Permanent Magnet Synchronous Motor Drive System PI Control PI Observer PMSM Drive Position Sensor Rotation Control Rotor Position Rotor Speed Rotors Sensorless Machine Control Simulation Sliding Mode Controller Synchronous Machine Synchronous Motor Drive Unexpected Adverse Effect Variable Structure System Velocity
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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