Characterization, numerical analysis, and design of switched reluctance motors

Tang, Yuxin

doi:10.1109/28.649967

Cited by 50 publications

(16 citation statements)

References 14 publications

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“…With the inductance model developed earlier, the torque expression given in (3) reduces to (8) where (9) The electrical dynamics of the SRM are given by (10) where and are the voltage and flux, respectively, associated with the th phase and is the phase resistance. Using , we obtain (11) Hence (12) From physical considerations, it is meaningful to assume that the denominator in (12) is positive within the range of operation of the motor, i.e., (13) Using the inductance model (4) (14) where and .…”

Section: Modeling and Problem Statementmentioning

confidence: 99%

Robust Force Control of an SRM-Based Electromechanical Brake and Experimental Results

Krishnamurthy

Lu²,

Khorrami

et al. 2009

IEEE Trans. Contr. Syst. Technol.

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In this paper, we propose robust nonlinear force controllers for a switched-reluctance-motor (SRM) electromechanical brake system which is a promising replacement for hydraulic brakes in the automotive industry. A torque-level control law is first designed using robust backstepping. The backstepping proceeds via the force and the velocity states. The voltage-level control laws are obtained from the virtual control law for the torque using either an additional step of backstepping incorporating a novel voltage-commutation scheme or a torque-ripple-minimizing algorithm based on a design of turn-on/turn-off angles and torque factors. The controllers do not require knowledge of the motor mechanical parameters and the functional forms of the relationships among the motor position, the brake force, and the motor load torque. A detailed model of the motor including current-dependent inductance coefficients is used. The load exerted on the motor by the caliper may be modeled as a spring; however, the actual load model is taken to be an unknown nonlinear function of position to allow for uncertainties in the model. Hence, the developed controllers work for a wide variety of loads including brake systems. Moreover, the controllers provide significant robustness to uncertainty in the inductances and address practical current and voltage constraints. The performance of the proposed controllers is demonstrated through both simulation and experimental studies.

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Section: Modeling and Problem Statementmentioning

confidence: 99%

Robust Force Control of an SRM-Based Electromechanical Brake and Experimental Results

Krishnamurthy

Lu²,

Khorrami

et al. 2009

IEEE Trans. Contr. Syst. Technol.

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“…Also, the magnetic characteristics of these drives are highly non-linear and difficult to control. Some works have used asymmetric converter to excite each phase to counter these problems (Tang 1997;Koibughi et al 1997;Arumugam et al 1985;Xu and Ruckstadter 1995). These torque ripples are sensitive to the size, the mechanical construction and the precision of the switching angles.…”

Section: Introductionmentioning

confidence: 97%

Electromagnetic characteristics correlated with the excitation current and the rotor position in the SRM

Arif

Guettaf

Sbaa

et al. 2015

Int J Syst Assur Eng Manag

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This paper considers the implementation of a current control method for switched reluctance motors (SRMs) and presents a novel approach to the correlate and accurate on-line modeling of three phases, 6/4 an SRM drive. This paper is to present a new approach to the description of correlation between the electromagnetic torque and the excitation current with the rotor position in the SRMs. There was no evidence for significant changes in the electromagnetic characteristics (the flux linkage and torque) with correlation upon varying the excitation current, the main effects have been observed upon variation of the modifying the rotor position. The correlation between the electromagnetic torque and the excitation current with the rotor position were investigated. It must be noted that the magnetic equivalent circuit is conceptual in nature and therefore more appealing to studies and simulation for hysteresis and voltage control strategies.

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“…However, they are difficult to analyze, because of their nonlinear magnetic characteristic and doubly salient pole structure. Therefore, finite element analysis (FEA) has proven a useful method for obtaining accurate magnetic characteristics of SRMs [1,2].…”

Section: Introductionmentioning

confidence: 99%