Design of New Linear Vernier Machine with Skew and Halbach Permanent Magnet for Wave Energy Converters

Arish, Nima; Teymoori, Vahid; Yaghobi, Hamid; Moradi, Mehdi

doi:10.1109/psc49016.2019.9081549

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…High power factor is important in permanent magnet Vernier motors (PMVM) (15). A model for increasing the power factor is proposed by Li et al (16).…”

Section: Introductionmentioning

confidence: 99%

Using Reluctance Torque Theory in Spoke Type Permanent Magnet Vernier Motors to Increase Average Torque

Imanifar,

Yaghobi

2024

IJE

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Conventional energy sources like fossil fuels are no longer viable due to their limitations and environmental impact. The demand for cleaner, more efficient energy solutions has led to the development of electric machines with smaller volumes and higher output. The family of permanent magnet Vernier motors have high torque output at very low speeds while being very small in volume. In conventional SVPM, the core losses are high, which leads to heating and reducing the efficiency of the motor, and the power factor of the motor is also low, and the torque can increase in relation to the motor volume. The reluctance torque theory, along with the normal output torque of the motor, increases the final torque of the motor. In addition, the toothing of the rotor reduces the cross-sectional area and weight of the rotor. With the reduction of the cross-sectional area, the eddy currents in the core are reduced, the power factor increases and the efficiency of the motor improves. Therefore, in this paper, a spoke-type permanent magnet Vernier motor with a rotor similar to the reluctance rotor has been designed, which has higher torque, lower losses, and higher power factor compared to conventional spoke-type permanent magnet Vernier motors.

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“…High power factor is important in permanent magnet Vernier motors (PMVM) (15). A model for increasing the power factor is proposed by Li et al (16).…”

Section: Introductionmentioning

confidence: 99%

Using Reluctance Torque Theory in Spoke Type Permanent Magnet Vernier Motors to Increase Average Torque

Imanifar,

Yaghobi

2024

IJE

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“…Nematsaberi et al [13], by using the spoke array permanent magnet instead of a simple permanent magnet and adding non-magnetic material decreased the leakage flux remarkably which raised the thrust force and PF. Arish et al [14] have improved the performance of the proposed machine by reducing leakage flux and increasing generation of the magnetic field by hybrid structure and the simultaneous use of two different permanent magnet structures, skew and Halbach [15]. Khaliq et al [16] have reduced the leakage flux in the proposed machine by using a spoke array permanent magnet in the dual stator structure.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Linear Permanent Magnet Vernier Machine Topologies for Wave Energy Converters

Arish

Marignetti

2021

IJE

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Today, the importance of using vernier machines in wave energy converters has increased because of its simple structure and ability to generate a lot of thrust force at low speeds due to the magnetic gear effect. The linear vernier permanent magnet machine has been designed in various structures. Proper design and selection of the main parameters of the machine will improve performance and increase the efficiency of the linear vernier machine. One of these parameters is the shape of the permanent magnets and how they are magnetically oriented. The novelty of this paper is the reduction of leakage flux, achieved by changing the shape and orientation of the permanent magnet. Three types of linear permanent magnet vernier machines with different permanent magnet structures and orientation, including V-shape, Halbach array and consequent-pole are presented. The considered machines have been compared to each other and to the existing machine in terms of airgap flux density, back EMF, PM flux, Inductance, thrust force, detent force, loss, efficiency, power factor, flux density and flux line, using the finite element method in the same conditions and with the same volume of permanent magnets. The results show that the magnetic orientation and shape of the permanent magnet have a considerable effect on the leakage flux, and all the proposed models have a lower leakage flux and better performance compared to the existing model.

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“…An increase in the volume of the PM and correct selection of the shape of magnet and magnetic direction can improve the performance of the proposed machine [17]. In the various types of structures, magnets are used in the form of simple [18], spoke array [19], skew [20], hybrid [21,22] and Halbach array [23] to improve the main parameter of the proposed machine. A permanent magnet Vernier machine has been proposed shi et al [24] and Fan et al [25].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a New Linear Dual Stator Consequent Pole Halbach Array Flux Reversal Machine

2021

IJE

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The permanent magnet machine has attracted much attention due to its high torque density at low speed and simple configuration. This feature is due to many magnetic pole pairs that flux in the air gap can be significantly changed with the smallest motion of the moving. In this paper, a linear dual stator flux reversal permanent magnet machine (LDSFRPMM) with toroidal winding is presented, which magnets embedded with Halbach and simple array on the translator and stator, respectively. The innovation of this structure over a conventional machine is the addition of a magnet between the stator teeth with the appropriate magnetic orientation,and finding the best width of permanent magnet on the stator and a change of the type of winding from the concentrated to the toroidal. By implementing these changes on a conventional machine, the main parameters of the machine such as back electromotive force (EMF), thrust force, power factor and permanent magnetic (PM) flux are increased which improves the performance of the proposed machine.

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Design of New Linear Vernier Machine with Skew and Halbach Permanent Magnet for Wave Energy Converters

Cited by 9 publications

References 9 publications

Using Reluctance Torque Theory in Spoke Type Permanent Magnet Vernier Motors to Increase Average Torque

Using Reluctance Torque Theory in Spoke Type Permanent Magnet Vernier Motors to Increase Average Torque

Evaluation of Linear Permanent Magnet Vernier Machine Topologies for Wave Energy Converters

Analysis of a New Linear Dual Stator Consequent Pole Halbach Array Flux Reversal Machine

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