An Improved 9/12 Two-Phase E-Core Switched Reluctance Machine

Eskandari, Hamed; Mirsalim, Mojtaba

doi:10.1109/tec.2013.2279344

Cited by 62 publications

(18 citation statements)

References 9 publications

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“…8 that the cogging torque is in the range of (−15, 15) mNm, which is negligible compared to the average torque. In addition, the torque profile of the proposed HRM resembles a standard trapezoidal waveform more than the torque profile of the proposed SRM; thus, it can be stator yoke permeance between common and unexcited poles P sy1 (5) stator yoke permeance between two non-PM teeth P sy2 (6) rotor yoke permeance between two teeth P ry (7) rotor tooth permeance P rp (8) stator tooth permeance P sep (9) stator common pole permeance P cp (10) PM permeance P PM (11) air-gap permeance facing the common-pole tooth P cpa concluded that the cogging torque does not have any detrimental effect on the operation of the proposed HRM. Fig.…”

Section: Simulation and Analysismentioning

confidence: 99%

Analytical modelling and experimental verification of E‐type reluctance motors

Masoumi

Kondelaji

Mirsalim

et al. 2018

IET Electric Power Applications

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The main objective of this study is the analytical modelling of two short-flux-path two-phase reluctance motors with Etype stators: first, a switched reluctance motor and second, a hybrid-excitation reluctance motor (HRM). The former has no permanent magnets in its structure, whilst in the latter, there are magnets inside the common poles. Firstly, finite element analysis (FEA) is adopted to obtain the flux paths distribution in the proposed structures. Then, a precise magnetic circuit model (MCM), which considers all leakages and fringing effects, is built and the permeances of the machine are calculated for any rotor position based on the predicted flux flow patterns. Torque and inductance curves and steady-state current and voltage waveforms are also carried out. Finally, both motor prototypes are fabricated and the experimental results are obtained and compared with those of MCM and FEA. This comparative study confirms the validity and accuracy of the developed MCMs. In addition, the torque profiles of the proposed structures and two other conventional and C-type reluctance motors are compared. It is shown that the proposed HRM has superior characteristics amongst all compared structures. Nomenclature n number of stator E-cores θ sc stator common pole arc θ se stator excitation pole arc θ r rotor pole arc γ angle between two consecutive E-cores δ angle between two excitation poles in one E-core α rotor pole pitch N r number of rotor poles N f number of turns per excitation pole I f excitation current

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Section: Simulation and Analysismentioning

confidence: 99%

Analytical modelling and experimental verification of E‐type reluctance motors

Masoumi

Kondelaji

Mirsalim

et al. 2018

IET Electric Power Applications

Self Cite

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“…The torque ripple can be 70% or more in three-phase SRMs [6,7], and 50% or more in four-phase SRMs [8,9]. The reduction of torque ripple is an active research topic and improvement strategies include machine design optimization [10][11][12] and advanced control techniques [13][14][15][16][17]. Fundamentally, the phase number of an SRM sets the number of torque pulses per electrical cycle and so directly determines the nature of the torque waveform.…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective and High-Efficiency Variable-Speed Switched Reluctance Drives With Ring-Connected Winding Configuration

Deng

Mecrow

et al. 2019

IEEE Trans. Energy Convers.

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This paper presents a novel converter topology for six-phase Switched Reluctance Motor (SRM) drives, which reduces the number of switches and diodes by half, compared with the conventional asymmetric half bridge converter, but needs no additional energy storage component. A dynamic model of a six-phase SRM is developed in the MATLAB/SIMULINK environment and conventional current chopping and angle position control techniques are applied to the proposed converter, demonstrating successful operation across the full speed range with modified conventional control techniques, lower converter losses and higher system efficiency compared with the asymmetric half bridge converter. Experimental tests comparing two versions of the proposed converter with an asymmetric half bridge are described and verify the predictions of the simulations.

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“…However, torque development in SRMs is fundamentally prone to high ripple giving rise to vibration and acoustic noise, and this characteristic is a significant drawback [6]. The reduction of torque ripple is an active research topic and improvement strategies include machine design optimisation [7–9] and advanced control techniques [10–12].…”

Section: Introductionmentioning

confidence: 99%