Modeling based on 3D finite element analysis and experimental study of a 24-slot 8-pole axial-flux permanent-magnet synchronous motor for no cogging torque and sinusoidal back-EMF

Güleç, Mehmet; Yolaçan, Ersin; Demir, Y.; Ocak, O.; Aydın, Metin

doi:10.3906/elk-1308-150

Cited by 10 publications

(6 citation statements)

References 25 publications

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“…The numerical techniques, i.e., Finite Elements Method (FEM) have become a regular part of motor design procedure as they allow accurate solving of Maxwell's differential equations i.e., obtaining the magnetic flux density B in each part of the machine cross-section [25]- [27]. The flux density in motor cross section determines the motor core losses.…”

Section: Numerical Modelsmentioning

confidence: 99%

Comparative Analysis of Line-start Synchronous Motor and Asynchronous Motor

Śarac¹

2021

EEA

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Energy efficient motors are the key components of each industrial process. In the energy demanding society, requiring the energy efficient consumers, the line-start synchronous motor has gained more and more popularity due to the high efficiency and power factor combined with good operational characteristics. The disadvantages of the synchronous motors such as inability of starting without the inverter has been largely overcame with this type of the motor. However, the proper design of line-start motor regarding permanent magnets and the squirrel cage winding is crucial for motor starting and synchronization capability. In this paper, the line-start synchronous motor is derived from the asynchronous motor by redesigning the rotor. The obtained performance characteristics of the synchronous motor is compared with the data of the asynchronous motor (the analytical, measurements and from the motor producer) and they show reasonable agreement. The derived model of the synchronous motor is numerically modelled for obtaining the magnetic flux density distribution in the motor cross-section. The analysis and comparison is completed by obtaining the transient characteristics of both types of the motors. The designed synchronous motor has proven to have good starting and synchronization capabilities combined with the high efficiency. The dynamic response at sudden load changes is within expected limits.

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Section: Numerical Modelsmentioning

confidence: 99%

Comparative Analysis of Line-start Synchronous Motor and Asynchronous Motor

Śarac¹

2021

EEA

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“…Finite Elements Method (FEM) have become a regular part of motor design procedure as they allow accurate solving of Maxwell's differential equations i.e. obtaining the magnetic flux density B in each part of the machine crosssection [26]- [28]. The flux density in motor cross section determines the motor core losses.…”

Section: Numerical Modelsmentioning

confidence: 99%

Line-Start Synchronous Motor a Viable Alternative to Asynchronous Motor

Šarac

2020

FU Aut Cont Rob

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Advancements in power electronics that contributed to the easier starting of synchronous permanent magnet motors have increased the significance of this type of motors, widely known as not–self-starting motors. However, power electronics, which is necessary, for the starting of the synchronous motor contributed also to the complexity of this type of motor drives as well as to increased operational and maintenance cost. The line-start synchronous motors have gained the popularity during recent years as a viable alternative to asynchronous motors due to an easy line starting similar to the asynchronous motors and good operational parameters such as high efficiency and power factor. The paper presents the design of a line-start synchronous motor, derived from an asynchronous motor, by redesigning the rotor with flux barriers and permanent magnets. The computer models for calculating parameters and operating characteristics of both motors were modeled and the accuracy of the obtained results was verified by comparison with experimental data. Motor transient characteristics of speed, current and torque for the line starting of the both motors, when they were fed with the voltage from the network, were determined as well. The obtained transient characteristics of both motors were compared and adequate conclusions regarding line starting of both motors were derived. The newly derived synchronous motor for line starting has good operational characteristics such as increased efficiency, power factor and starting torque compared with the respected parameters of the asynchronous motor, good transient and steady-state operating characteristics and good dynamic response at sudden load change.

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“…The cogging torque was weakened by C. Ma et al [13] through the combination of magnetic pole segmentation with rotor open auxiliary slots. Effective reduction in the cogging torque and obtaining a more sinusoidal no-load back electromotive force waveform were achieved by Güleç M. et al [14] by using inclined poles and rotor pole displacement, making the motor operate more stably at low speeds. M. Aydin et al [15] proposed a new coreless spoke-type sinusoidal rotor segmented permanent-magnet synchronous motor, which achieved higher performance and torque compared to traditional AFPM motors.…”

Section: Introductionmentioning

confidence: 99%

Influence of Magnetic Pole Stepping Combined with Auxiliary Stator Slots on the Stability of Dual-Rotor Disc Motors

Guo,

Cao,

Qian

et al. 2023

Energies

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With the growing utilization of disc motors, the enhancement of their operational stability has become a critical research area. The existing studies usually focus on improving the pole structure of the rotor or the stator structure to optimize one performance of the motor and less on optimizing multiple performances. This paper simultaneously improves the rotor pole structure and stator tooth structure of the motor in order to optimize the sinusoidal waveform of the no-load back electromotive force and the cogging torque at the same time to achieve the goal of reducing the vibration and noise of the permanent-magnet synchronous dual-rotor statorless magnetically coupled disc motor and improve its operational stability. A finite element simulation model of a 20-pole, 24-slot permanent-magnet synchronous dual-rotor statorless magnetically coupled disc motor is established to analyze the influence of various factors, including the number of magnetic pole steps, the opening position, depth, and width of the stator auxiliary slot, on the motor performance. The results show that this stator–rotor combination improvement method effectively reduces the total harmonic distortion (THD) and attenuates multiple harmonics, and the peak cogging torque pulsation is significantly improved while other properties of the motor meet the technical requirements, and the motor performance is improved.

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Modeling based on 3D finite element analysis and experimental study of a 24-slot 8-pole axial-flux permanent-magnet synchronous motor for no cogging torque and sinusoidal back-EMF

Cited by 10 publications

References 25 publications

Comparative Analysis of Line-start Synchronous Motor and Asynchronous Motor

Comparative Analysis of Line-start Synchronous Motor and Asynchronous Motor

Line-Start Synchronous Motor a Viable Alternative to Asynchronous Motor

Influence of Magnetic Pole Stepping Combined with Auxiliary Stator Slots on the Stability of Dual-Rotor Disc Motors

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