Vector Control of PMSM Based on Sliding Mode Observer

doi:10.16182/j.issn1004731x.joss.201811026

Abstract

Abstract: Aiming at the coupling problem of current loop in vector control permanent magnet synchronous motor, a complex vector decoupling control strategy based on sliding mode observer is proposed. Based on the traditional sliding mode observer, the introduction of Sigmoid as a switching function and variable sliding mode gain to reduce the high frequency chattering, followed by construction of complex vector PI current regulator, combined with the transfer function of zero pole configuration and stability theory, determine the parameters of PI regulator, the view of rotor position and speed sensor observation information into the complex vector PI current regulator decoupling control. The effectiveness of the proposed method is verified by experimental research on two aspects of the tracking ability and anti disturbance capability of the controller.

Key words: permanent magnet synchronous motor, complex vector, decoupling strategy, Sigmoid function, sliding mode observer

CLC Number:

TM341

Wu Dinghui, Yang Deliang, Chen Jinbao. Vector Control of PMSM Based on Sliding Mode Observer[J]. Journal of System Simulation, 2018, 30(11): 4256-4267.

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