A High-Performance Line-Start Permanent Magnet Synchronous Motor Amended From a Small Industrial Three-Phase Induction Motor

Fei, W.; Luk, P.C.K.; Ma, Jien; Shen, Jian‐Xin; Yang, Guanghui

doi:10.1109/tmag.2009.2022179

Cited by 99 publications

(55 citation statements)

References 4 publications

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“…The design of LSPM motors must meet the requirements of some industrial applications,such as operation accuracy and stability.One of the most important constraints the mechanical shaft vibrations,especially at low speeds, that can be avoided by reducing the amplitude of torque harmonics.This can be achieved by using a wide range of techniques proposed by many researchers [7]- [9].A permanent magnet synchronous motor is studied in this paper.Based on energy method and Fourier expansion, the expression of cogging torque is established.…”

Section: Rotor Shape Analytical Expression For Cogging Torquementioning

confidence: 99%

The Optimization of the Ratio Between Rotor Slot Width and Rotor Tooth Pitch to Reduce Cogging Torque in Line-Start Permanent Magnet Synchronous Motors

Diao¹

2015

Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science

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Section: Rotor Shape Analytical Expression For Cogging Torquementioning

confidence: 99%

The Optimization of the Ratio Between Rotor Slot Width and Rotor Tooth Pitch to Reduce Cogging Torque in Line-Start Permanent Magnet Synchronous Motors

Diao¹

2015

Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science

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“…Among various types of electrical motors, small three phase induction motors are widely used in many industrial applications such as pumps and fans [2]. Small Induction Motors (IM) has relatively low operational efficiency and power factor, which has limited their application.…”

Section: Introductionmentioning

confidence: 99%

Cogging Torque Reduction in Line Start Permanent Magnet Synchronous Motor

Behbahanifard¹,

Sadoughi²

2016

Journal of Electrical Engineering and Technology

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-Cogging torque has a negative impact on the operation of permanent magnet machines by increasing torque ripple, speed ripple, acoustic noise and vibration. In this paper Magnet Shifting Method has been used as a tool to reduce the cogging torque in inset Line Start Permanent Magnet Synchronous Motor (LSPMSM). It has been shown that Magnet Shifting Method can effectively eliminate several lower-order harmonics of cogging torque. In order to implement the method, first the expression of cogging torque is studied based on the Fourier analysis. An analytical expression is then introduced based on Permanent Magnet Shifting to reduce cogging torque of LSPMS motors. The method is applied to some existing machine designs and their performances are obtained using Finite Element Analysis (FEA). The effect of magnet shifting on pole mmf (magneto motive force) distribution in air gap is discussed. The side effects of magnet shifting on back-EMF, core losses and torque profile distortion are taken into account in this investigation. Finally the experimental results on two prototypes 24 slot 4 pole inset LSPMS motors have been used to validate the theoretical analysis.

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“…As highefficiency line-start permanent-magnet motors (LSPMMs) have evolved from fractional horsepower single-phase motors [4] into commercial three-phase machines in a power range up to 7.5 kW [5]- [8], LSPMMs are being suggested as one of the possibilities to achieve IE4 efficiency. A state-of-the-art review of both practical advantages and limitations of these LSPMMs has been presented in [9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Efficiency of Line-Start Permanent-Magnet Machines as a Function of the Operating Temperature

Debruyne

Polikarpova

Derammelaere

et al. 2014

IEEE Trans. Ind. Electron.

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Abstract-The standard squirrel-cage induction machine has nearly reached its maximum efficiency. In order to further increase the energy efficiency of electrical machines, the use of permanent magnets in combination with the robust design and the line start capability of the induction machine is extensively investigated. Many experimental designs have been suggested in literature, but recently, these line-start permanent-magnet machines (LSPMMs) have become off-the-shelf products available in a power range up to 7.5 kW. The permanent magnet flux density is a function of the operating temperature. Consequently, the temperature will affect almost every electrical quantity of the machine, including current, torque, and efficiency. In this paper, the efficiency of an off-the-shelf 4-kW three-phase LSPMM is evaluated as a function of the temperature by both finite-element modeling and by practical measurements. In order to obtain stator, rotor, and permanent magnet temperatures, lumped thermal modeling is used.

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A High-Performance Line-Start Permanent Magnet Synchronous Motor Amended From a Small Industrial Three-Phase Induction Motor

Cited by 99 publications

References 4 publications

The Optimization of the Ratio Between Rotor Slot Width and Rotor Tooth Pitch to Reduce Cogging Torque in Line-Start Permanent Magnet Synchronous Motors

The Optimization of the Ratio Between Rotor Slot Width and Rotor Tooth Pitch to Reduce Cogging Torque in Line-Start Permanent Magnet Synchronous Motors

Cogging Torque Reduction in Line Start Permanent Magnet Synchronous Motor

Evaluation of the Efficiency of Line-Start Permanent-Magnet Machines as a Function of the Operating Temperature

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