Design considerations for the switched reluctance motor

Radun, A.V.

doi:10.1109/28.464522

Cited by 173 publications

(63 citation statements)

References 7 publications

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“…There are two common ways of modeling an SRM: the so-called 'flux-based model' and the 'current-based model'. Both are state-space representations which are based on the voltage equation of one phase [4]:…”

Section: Standard Simulation Model Of Symmetric Srmsmentioning

confidence: 99%

Efficiently modeling rotor eccentricity in switched relcutance machines

Hofmann

Weiss

et al. 2014

2014 16th European Conference on Power Electronics and Applications

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Practical experience has shown that parasitic effects such as rotor eccentricity can have crucial influence on the performance of switched reluctance machines. Strong eccentricity can even be a knock-out criterion as it potentially causes additional acoustic noise and increased bearing wear. Nowadays only very few publications consider simulation methods without online finite-element analysis regarding the topic of rotor eccentricity. This paper develops a look-up table based representation of rotor eccentricity which uses time-consuming finite-element analysis only in a preprocessing step. Hence, different operating points can be calculated very fast. The standard models of centric machines were extended to cover static and rotating eccentricity. It was found that the type of coil connection determines whether a flux-based or a current-based model has to be applied. The simulation results show that coils which are connected in parallel are strongly preferable to a series-wound configuration. The parallel type greatly lowers the unbalanced magnetic pull such that acoustic noise and bearing wear is limited.

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Section: Standard Simulation Model Of Symmetric Srmsmentioning

confidence: 99%

Efficiently modeling rotor eccentricity in switched relcutance machines

Hofmann

Weiss

et al. 2014

2014 16th European Conference on Power Electronics and Applications

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“…As shown in fig.3, the analytical model to calculate magnetic radial force is based on the assumption of independent pole pair, which combines Maxwell stress tensor method with magnetic circuit method. Magnetic saturation effects and radial displacements of the rotor were taken into account [6][7][8][9][10]. …”

Section: Mathematical Model Of Radial Forcementioning

confidence: 99%

Stator Vibration Analysis of Bearingless Switched Reluctance Motors

Yan

Deng

Zhang

et al. 2010

2010 International Conference on Electrical and Control Engineering

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Radial magnetic force acts on the motor stator cause large vibration and acoustic noise, that have limit the application of switched reluctance motors (SRMs). They can be aggravated when there is unbalanced force due to rotor eccentricity. This paper analyzed the function of bearingless technique in compensating the unbalanced magnetic attraction force; Then the stator radial force mathematic model of bearingless switched reluctance motors (BSRMs) is introduced; System simulation models of SRM and BSRM are built and two motors' stator radial force are analyzed. Radial force harmonic analysis results indicate：The DC restorer and lower order harmonic magnitude of lopsided force decrease sharply compare with which of SRM, Thus it's stator vibration is smaller and can radiate smaller acoustic noise, and BSRM is more fit be used in fields call for lower noise.

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“…SR motor control presents a different set of problems from those of more familiar ac induction and permanent magnet drives in use today. The SR motor is highly nonlinear, and is often operated with extreme saturation to achieve high torque density [1] and reduce the inverter kVA/hp [2]. The torque is usually controlled via an inner current loop, with a nonlinear relationship between torque and current.…”

Section: Introductionmentioning

confidence: 99%

High-performance digital pi current regulator for ev switched reluctance motor drives

Schulz

Rahman

2003

IEEE Trans. on Ind. Applicat.

101

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This paper presents a design methodology for digital proportional-integral current regulators that may be used for the highly nonlinear switched reluctance motor control. The important nonlinear behavior of saturation, back electromotive force (EMF), and mutual coupling are accounted for to achieve consistent current regulator performance over the entire operating regime. Gain adaptation is used with respect to both position and current to insure stability. An improved back-EMF decoupling scheme is implemented to reduce bandwidth requirements. The proposed control is implemented on a high-torque traction drive for electric vehicle applications. Simulation and experimental results demonstrate excellent performance over the entire operating regime.

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Design considerations for the switched reluctance motor

Cited by 173 publications

References 7 publications

Efficiently modeling rotor eccentricity in switched relcutance machines

Efficiently modeling rotor eccentricity in switched relcutance machines

Stator Vibration Analysis of Bearingless Switched Reluctance Motors

High-performance digital pi current regulator for ev switched reluctance motor drives

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