Smooth Transition Switching Strategy for Sensorless Control of PMSM with Extended State Observer and Phase-Locked Loop

The article introduces an innovative method for sensorless control of Permanent Magnet Synchronous Machines (PMSM), ensuring stable operation across the entire speed range. It adopts an Extended State Observer (ESO) based on pulse injection of elevated-frequency voltage for low-speed rotor position...

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Bibliographic Details
Published inIEEE International Conference on Industrial Informatics (INDIN) pp. 1 - 6
Main Authors Qi, Dawei, Wang, Dongxue, Wu, Guangming
Format Conference Proceeding
LanguageEnglish
Published IEEE 18.08.2024
Subjects
Accuracy
extended state observer
MATLAB
Observers
permanent magnet synchronous machines
Phase locked loops
Rotors
Sensorless control
sliding mode observer
Stability analysis
switch strategy
Switches
System dynamics
Voltage control
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Summary:The article introduces an innovative method for sensorless control of Permanent Magnet Synchronous Machines (PMSM), ensuring stable operation across the entire speed range. It adopts an Extended State Observer (ESO) based on pulse injection of elevated-frequency voltage for low-speed rotor position estimation and utilizes a Phase-Locked Loop (PLL) based Sliding Mode Observer for medium to high-speed rotor position estimation. Building upon this foundation, a smooth and continuous cubic function proportional switching strategy is proposed. This strategy considers the impact of discontinuities in the derivative of the switching proportional coefficient on the smoothness of speed transitions, ensuring a smooth transition of derivatives at switching instants. Simulation of this sensorless control switching strategy is conducted using Matlab/Simulink software. Simulation outcomes indicate that the suggested switching method enables accurate rotor position and speed estimation with seamless transitions.
ISSN:2378-363X
DOI:10.1109/INDIN58382.2024.10774230