Current Distortion Rejection in PMSM Drives Using an Adaptive Super-Twisting Algorithm

Unavoidably, the controlsystem of any permanent magnet synchronous motor (PMSM) is subjected to perturbations, e.g., motor nonidealities and inverter nonlinearities. To reject these perturbations, a new super-twisting (ST) control variant, called speed adaptive super-twisting (S-AST) control, is pro...

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Bibliographic Details
Published in:IEEE transactions on energy conversion 2022-06, Vol.37 (2), p.927-934
Main Authors: Garduno, Daniel, Rivas, Jaime J., Castillo, Oscar, Ortega Gonzalez, Ruben, Gutierrez, Francisco Emilio
Format: Article
Language:English
Subjects:
AC motor drives
Adaptive algorithms
Adaptive control
Distortion
Harmonic analysis
Harmonic distortion
Magnetic flux
permanent magnet synchronous motors
Permanent magnets
Perturbation
Perturbation methods
Proportional integral
sliding mode control
Stators
Synchronous motors
Torque
Twisting
Waveforms
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Summary:Unavoidably, the controlsystem of any permanent magnet synchronous motor (PMSM) is subjected to perturbations, e.g., motor nonidealities and inverter nonlinearities. To reject these perturbations, a new super-twisting (ST) control variant, called speed adaptive super-twisting (S-AST) control, is proposed in this paper. In the S-AST control, a proportional-integral (PI) and a ST controllers are merged using an adaptive law that is based on the motor speed measurement. This is done to reduce the chattering problems that the standard ST control presents. In addition, a mathematical design for the S-AST control is proposed, where the relationship between the chattering amplitude, the switching frequency and the system perturbations is shown. The main contribution in this paper is the application of the S-AST controller to reduce the total harmonic distortion (THDi) of the PMSM currents. By comparing the S-AST control against PI control, the THDi is reduced from 9.9% to 1.27%, in simulation, and the THDi is reduced from 22.79% to 1.56%, experimentally. These results demonstrate how the S-AST control is an excellent alternative to improve the waveform of the PMSM currents.
ISSN:0885-8969
1558-0059
DOI:10.1109/TEC.2021.3131967