Comparison of permanent magnet synchronous motor and synchronous reluctance motor based on their torque per unit volume

Lavrinovicha, L.; Dirba, Jānis

doi:10.1109/pq.2014.6866817

Cited by 23 publications

(13 citation statements)

References 4 publications

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“…SynRMs are the members of the synchronous motor family based on the principle of the alternating current, which uses the same stator structure as IMs and generates an output torque based on the reluctance concept in their rotor. SynRMs utilize the concept of the interaction between the magnetic flux of the airgap and the rotating sinusoidal magnetomotive force (MMF) created from the windings in the stator [8]. The field produced by windings is transferred from stator to rotor through a small airgap.…”

Section: A Working Principle and Torque Generation Of Synrm Machinesmentioning

confidence: 99%

“…The Synchronous Reluctance Machines have attractive features comparing with IMs and PMSMs: magnet free, hence lower production cost, having lack of rotor copper losses due to absence of winding in their rotor [6], high stability, high efficiency [7], and high torque/volume [8]. Moreover, SynRMs have cooler shaft and bearings leading to longer lifetime and low maintenance requirement because they do not include windings in their rotor [9].…”

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of a Rotor for a 22 kW Transversally Laminated Anisotropic Synchronous Reluctance Motor

Ozdil

Uzun

2021

ELEKTRON ELEKTROTECH

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Substantial increase in energy consumption in all around the world has led to researchers to need to produce electrical machines with high energy efficiency since majority of energy has been consumed at industry, especially by electrical machines. Among electrical machines, the Synchronous Reluctance Machines (SynRMs) have been preferred to investigate in recent years due to lack of Induction Machines (IMs) in terms of efficiency and high price of the Permanent Magnet Synchronous Machines (PMSMs). In this study, the Finite Element Analysis (FEA) showing the effects of phase angle of current, number of flux barriers, starting diameter of flux barriers, and ribs on machine performance of 22 kW Transversally Laminated Anisotropic (TLA)-SynRM with distributed winding have been carried out in ANSYS Electronics. The design is based on creating a novel rotor considering these rotor parameters since the utilized SynRM consists of same stator with same sized 22 kW IM. The performance of the machine has been investigated through torque, torque ripple, efficiency, saliency, and power factor. Moreover, the effect of the phase angle of the current on the machine performance and the comparison of the 22 kW-SynRM with the same sized and powered IM and with a different SynRM have been carried out in this study. This study has concluded that although the novel SynRM has high torque ripple values, it is better than the IM due to lack of copper losses of rotor and the previously utilized SynRM considering their efficiency classes. The efficiency class of novel SynRM is IE4, whereas that for utilized IM and previously created SynRM are IE1 and IE3, respectively.

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Section: A Working Principle and Torque Generation Of Synrm Machinesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Rotor for a 22 kW Transversally Laminated Anisotropic Synchronous Reluctance Motor

Ozdil

Uzun

2021

ELEKTRON ELEKTROTECH

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“…The FW operations have been first investigated in [17], showing that the internal voltage can be reduced by the cross coupling between direct and quadrature axis. Later, in [18,19], an analysis using normalized parameters was proposed to consider all the synchronous motor drives.…”

Section: Introductionmentioning

confidence: 99%

Electro-Magnetic and Structural Analysis of Six-Pole Hybrid-Excited Permanent Magnet Motors

2021

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Potentials and limits of the Hybrid-Excitation Permanent-Magnet (HEPM) synchronous machine are dealt with in this paper. A six-pole machine is taken into consideration, and both parallel and series configurations are analysed and compared. Taking advantage of the rotor excitation coils, the permanent magnet (PM) rotor flux can be adjusted according to the operating speed to improve its performance parameters. The electro-magnetic force is analysed in its first harmonic and in the complete shape. Moreover, a comparison between analytical and numerical formulation has been done for the rotor current control. In particular, the speed range is extended, and electro-mechanical torque and power are increased, as well as the efficiency. It will be shown that the rotor flux reduction by using the excitation winding yields an improvement of the motor performance. The main advantage will be obtained during the flux-weakening operations. In this paper, different rotor topologies will be analysed to highlight the advantages and drawbacks of each of them, and how it is possible to achieve higher speed with higher torque and without high saliency ratio. A magnetic network will be introduced to explain the different contribution of the excitation winding to the rotor flux. Furthermore, a comparison of the amount of the volume of PM, copper and iron in internal permanent magnet (IPM) motor and HEPM motor will be analysed. Actually, an analysis of the harmonic content in the electro-motive force even varying the excitation current and a mechanical stress analysis of each machine will be shown. Finally, it will be verified that the excitation losses represent a minimum component of the total losses.

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“…Scientific research of RSM is oriented towards improving some performances of IM [4,5] with an ability to withstand higher temperature [6] or to produce a higher torque in the same rotor volume [7][8][9][10] which means the torque per unit (volume or mass) is higher than in the case of IM. Other research can be focused on RSM design optimization by means of various methods such as by using multi-objective optimization with an altered bee colony optimization and Taguchi method [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Saturation on Field Oriented Control of the New Designed Reluctance Synchronous Motor

Rafajdus¹,

Hrabovcová²,

Lehocký³

et al. 2018

Energies

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In this paper the effect of saturation on torque production of a reluctance synchronous motor (RSM), which was originally built as an induction motor (IM), is investigated. The rotor was replaced with new one, designed as synchronous reluctance cageless rotor with barriers, the shape and number of which were optimized to maximize the reluctance ratio. The torque measurement was done while the RSM was fed by frequency converter controlled by a microcontroller with closed loop field oriented control strategy to find out how saturation effects the developed torque at various values of the currents and speeds. It is shown how the load angle at which the maximum torque was achieved is changed. It was found out that the load angle was shifted to higher values depending on the speed of operation.

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Comparison of permanent magnet synchronous motor and synchronous reluctance motor based on their torque per unit volume

Cited by 23 publications

References 4 publications

Design and Analysis of a Rotor for a 22 kW Transversally Laminated Anisotropic Synchronous Reluctance Motor

Design and Analysis of a Rotor for a 22 kW Transversally Laminated Anisotropic Synchronous Reluctance Motor

Electro-Magnetic and Structural Analysis of Six-Pole Hybrid-Excited Permanent Magnet Motors

Effect of Saturation on Field Oriented Control of the New Designed Reluctance Synchronous Motor

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