Sliding Mode Self-Sensing Control of Synchronous Machine Using Super Twisting Interconnected Observers

Mohamed R Kafi,Hicham Chaoui,Mohamed A Hamida,Rabie Belkacemi

doi:10.3390/en13164199

Abstract

The aim of this study is to propose a self-sensing control of internal permanent-magnet synchronous machines (IPMSMs) based on new high order sliding mode approaches. The high order sliding mode control will be combined with the backstepping strategy to achieve global or semi global attraction and ensure finite time convergence. The proposed control strategy should be able to reject the unmatched perturbations and reject the external perturbation. On the other hand, the super-twisting algorithm will be combined with the interconnected observer methodology to propose the multi-input–multi-output observer. This observer will be used to estimate the rotor position, the rotor speed and the stator resistance. The proposed controller and observer ensure the finite-time convergence to the desired reference and measured state, respectively. The obtained results confirm the effectiveness of the suggested method in the presence of parametric uncertainties and unmeasured load torque at various speed ranges.

Highlights

Internal permanent-magnet synchronous machines (IPMSMs) have been getting progressively more popular in several industrial applications owing to high efficiency, good power density and the high torque/current ratio [1,2]
The described strategy is based on a higher order sliding mode controller and observer
The proposed controller is a good combination between the backstepping and higher order sliding mode strategies

Summary

Introduction

Internal permanent-magnet synchronous machines (IPMSMs) have been getting progressively more popular in several industrial applications owing to high efficiency, good power density and the high torque/current ratio [1,2]. Self-sensing control has become attractive in many industrial applications. To perform self-sensing control operations, various methods, like the one which uses the back electromotive force to control the IPMSM [5], have been proposed in the literature. This method offers a good performance at medium and high speeds [6]; it does not function at zero and very low speeds because of the integrator’s drift problem, in the analog realization

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Results

Conclusion