Novel Sensorless Sliding Mode Observer of a Five-Phase Permanent Magnet Synchronous Motor Drive in Wide Speed Range
This paper proposes a novel sliding mode observer (SMO) to achieve the sliding mode observer (SMC) for a five-phase permanent magnet synchronous motor (PMSM) in wide speed range. The structure of the proposed SMO is described and its stability is proven i
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Keywords Five-phase machine Permanent magnet synchronous motor Sliding mode controller Sliding mode observer Speed controller Lyapunov theory
A. Hosseyni M.F. Mimouni Monastir National Engineering School, Ibn Eljazzar City, 5019 Monastir, Tunisia e-mail: [email protected] M.F. Mimouni e-mail: [email protected] R. Trabelsi High Institute of Applied Sciences and Technology, Ibn Khaldoun City, 4003 Sousse, Tunisia e-mail: [email protected] A. Hosseyni R. Trabelsi M.F. Mimouni Research Unit: Systèmes Industriels et des Energies renouvelables, Rue Ibn Eljazzar, 5019 Monastir, Tunisia A. Iqbal Department of Electrical Engineering, Qatar University, Doha, Qatar e-mail: [email protected] P. Sanjeevikumar (&) Department of Electrical and Electronics Engineering, University of Johannesburg, Auckland Park, Johannesburg, South Africa e-mail: [email protected] © Springer Nature Singapore Pte Ltd. 2018 A. Garg et al. (eds.), Advances in Power Systems and Energy Management, Lecture Notes in Electrical Engineering 436, https://doi.org/10.1007/978-981-10-4394-9_22
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1 Introduction During the past years, multiphase drives have gained interest for their advantages. Their features include reduction of torque pulsations and reducing stator phase current [1–3]. The high phase order offers greater fault tolerance. Many nonlinear state feedback methods, and in particular, sliding mode control, have become an attractive alternative to the field-oriented control (FOC) strategy to achieve high performance of three-phase motor drives. The synthesis of SMC control requires the rotor speed and rotor position information, so that the position and speed sensors can be installed on the shaft. Unfortunately, these sensors are costly and touch to temperature and vibration. Nevertheless, many researchers’ activities were dedicated to sensorless control techniques and several methods were proposed. One of the known classes of nonlinear observers is the sliding mode observer which posses many special characteristics, namely order reduction control, simple algorithm and disturbance rejection. Numerous researches have been focused on the sensorless control strategies for three-phase PMSM [4–6] but only few researches have been focused on SMO for multiphase motor drives. This paper proposes the synthesis of sliding mode observer to estimate the rotor position and speed for a five phase in closed loop. The rest of this paper is organized as follows. The model of machine is presented in Sect. 2. The design and the stability of the proposed SMO are developed in Sect. 3, respectively. Some simulation results are shown in Sect. 5 and Sect. 6 deals with conclusions.
2 Model of a Five-Phase PMSM The stator flux of five-phase PMSM in dp ; qp ; ds ; qs is given by: 8 dkdp > > ¼ Rs Idp þ xe kqp þ vdp > > > dt > > dkqp > > > ¼ Rs Iqp xe kdp þ vqp > > < dt dkds ¼ Rs Ids þ xe kqs þ vds > dt > > > dkqs > > > ¼ Rs Iqp xe kds þ vqs > > dt > qffiffi > > : Tem ¼ 5P/ Iqp f 2 8 qffiffi 5 > > k ¼ L
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