Effects of the rotor design parameters on the torque production of a PMaSynRM for washing machine applications

Tap, Alper; Xheladini, Liridon; Asan, Tasdemir; Imeryuz, Murat; Yılmaz, Murat; Ergene, Lale T.

doi:10.1109/optim.2017.7974998

Cited by 10 publications

(6 citation statements)

References 11 publications

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“…Lastly, the slots/barriers combinations which guarantee better performance in terms of average torque maximisation and torque ripple reduction are 24 slots/3 barriers per pole and 36 slots/4 barriers per pole. These results are consistent with those reported in the literature [6, 12, 23, 24]. Figs.…”

Section: Average Torque–torque Ripple Optimisationsupporting

confidence: 94%

Design methodologies for the output power maximisation of synchronous reluctance machines

Palmieri

Cascella

Cupertino

2019

IET Electric Power Applications

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Synchronous reluctance (SyR) machines can constitute a promising alternative to permanent magnet machines for low-cost applications. The recent literature reports some guidelines for choosing the proper number and position of the rotor flux barriers capable of enhancing the electromagnetic performance in low-speed applications. However, as the rotational speed increases, the electromagnetic and structural mutual interactions become relevant; therefore, an optimal design requires a proper trade-off between torque production and stress reduction, which can be difficultly predicted analytically. This work proposes an approach based on optimisation algorithms in order to find 'non-conventional' geometries able to improve the power density: genetic algorithms coupled to magneto-static finite elements analysis and structural analytical models, are adopted to co-design SyR machines with different numbers of stator slots and rotor barriers subjected to the same thermal constraints. This study investigates two design procedures aimed at maximising the output power of SyR machines by increasing the rotational speed. Both procedures allow determining the power limits for a given volume of active parts and a fixed amount of admissible losses; moreover, the second procedure automatically finds also the rotational speed which maximises the output power.

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Section: Average Torque–torque Ripple Optimisationsupporting

confidence: 94%

Design methodologies for the output power maximisation of synchronous reluctance machines

Palmieri

Cascella

Cupertino

2019

IET Electric Power Applications

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“…When studying the bibliography related to the reduction of this phenomenon, it is evident that among the design parameters that more affect torque ripple is: the number of rotor flux barriers, stator slots/rotor flux barriers, quantity position of PM and insulation ratios (kq and kd). In [21] a design procedure is developed for a PMa-SynRM of a washing machine, based on a finite element software. The objective is to achieve the best design that gives the rated average torque induced, with minimal torque ripple.…”

Section: Research Methods 21 Effects Of Rotor Design Parameters On Torque Pulsationsmentioning

confidence: 99%

“…Thereby, the designer must analyze the specific situation for deciding what to do. As in the case analyzed before in [21], the rotor best variant related to flux barrier number is four; but due to the manufacturing difficulties and the mechanical strength, in this study three-layer of flux barriers are selected. When the optimal flux barrier geometry without PM had been achieved, three different cases are studied depending on the inserted PM.…”

Section: Research Methods 21 Effects Of Rotor Design Parameters On Torque Pulsationsmentioning

confidence: 99%

Reducing torque pulsations in PMa-SynRM: a way for improving motor performance

Viego

Gómez

Sousa

et al. 2021

IJPEDS

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This paper aims to evaluate the performance of synchronous reluctance motors assisted by a permanent magnet (PMa-SynRM) focused on efficiency and torque pulsations. PMa-SynRM shows high efficiency and power factor, compared to induction motors (IM), although they have a greater cost. These machines develop relatively high torque ripple, cogging torque, and torque imbalances. Consequently, the electromagnetic torque is reduced, the motor temperature is increased, and mechanical vibrations are induced. The optimal design of the machine structures such as flow barriers, permanent magnets, and stator slots, among others, allow reducing torque pulsations. A comparison is made between different designs of the PMa-SynRM reported in the scientific literature, and the effects on efficiency, torque pulsation, and operating costs are evaluated. A case study on the motor driving the air conditioner blower in a hotel room was made, to determine the best economic variant between IM or PMa-SynRM. A sensitive analysis was made to evaluate several uncertainties. The advantages of using one of the PMa-SynRM analyzed were demonstrated. Also, it was proved that the investment is feasible economically, although NPV and payback are not the best, due to low load factor in inverter-controlled motors in air conditioners.

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“…Nowadays, the Switched Reluctance Motor (SRM) is considered as the most appropriate candidate to drive small scale electric vehicles due to advantages such as its simple construction, wide constant power regions, and effective torque speed characteristics. The SRMs have been applied in various fields [1][2][3][4][5]. A convenient design of the SRM has a significant importance for an efficient performance of the motor.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Torque Analysis of SRM 12/8 by Rotor/Stator Pole Angle

Minh

Hai

Anh

et al. 2021

Eng. Technol. Appl. Sci. Res.

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This paper presents the harmonic torque reduction by the different rotor pole angles of a three-phase 12/8 switched reluctance motor via an analytical model and simulation method. Improving torque performance by stator and rotor angles was applied for three-phase switched reluctance motor at stator pole/rotor pole ratios of 6/4, 8/12, 18/12, and 24/18. The average torque and the torque ripple effect by stator and rotor pole embrace have been recently studied in many projects. Due to the fact that leakage flux, flux density, and inductance are affected by the stator and rotor pole angles non-linear and linear leakage flux curves occur. Many stator and rotor pole angle combinations for the three-phase switched reluctance motor have already been done via a finite element method. In this paper, turn-on and turn-off angles will be figured based on stator and rotor pole embraces.

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Effects of the rotor design parameters on the torque production of a PMaSynRM for washing machine applications

Cited by 10 publications

References 11 publications

Design methodologies for the output power maximisation of synchronous reluctance machines

Design methodologies for the output power maximisation of synchronous reluctance machines

Reducing torque pulsations in PMa-SynRM: a way for improving motor performance

Electromagnetic Torque Analysis of SRM 12/8 by Rotor/Stator Pole Angle

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