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Optimal rotor Poles and structure for Design of Consequent Pole Permanent Magnet Flux Switching Machine

Chinese Journal of Electrical Engineering 2021年第1期7卷 118-127页

作者： Wasiq Ullah Faisal Khan Muhammad Umair Department of Electrical and Computer Engineering COMSATS University Islamabad(Abbottabad Campus)Abbottabad 22040Pakistan

Permanent magnet flux switching machines(PMFSM)have attracted significant research interest and are considered as competent candidates when higher torque density is primary requirement.However,conventional PMFSMs uses excessive rare earth PM volumes which ultimately increases machine the machine weight and PM cost.Moreover,the PMs extended at the stator yoke results in stator leakage flux which degrades the performance.To suppress the leakage flux and diminish the PM volume,the consequent pole PMFSM(CPPMFSM)with flux bridges and barriers encompassing partitioned circumferential and radial magnetized PMs is proposed,thereby ensuring an alternate magnetic path for the working harmonics which improves the modulation effect and flux distribution.Moreover,the influence of the rotor pole number on seven different rotor structures namely,curved rotor,trapezoidal rotor,wide rotor tooth tip,wide rotor base width,rectangular segmented and eccentric rotors are investigated based on the electromagnetic performance and stress distribution.Finite element analysis(FEA)reveals that the 12S-13P CPPMFSM with a wider rotor base offers comparatively better electromagnetic performance.Compare to the conventional PMFSM,the proposed CPPMFSM reduces the PM volume which minimizes the overall machine cost and weight,suppresses the torque ripples by 16.49%,diminishes total harmonic distortion(THD)by 35.24%and decreases cogging torque by 32.88%.Furthermore,the torque and power density are enhanced by 7.028%and 7.025%respectively.

关键词： AC Machine consequent pole flux bridge flux switching machine permanent magnet rotor pole number rotor structure stress analysis

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Optimized Design of Switched Reluctance Motor Based on a New rotor structure

Optimized Design of Switched Reluctance Motor Based on a New...

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第37届中国控制会议

作者： Tao Wu Kaiyuan Fu Maolin Cao Zhenjiang Feng School of Automation China University of Geosciences

In this paper, the theoretical analysis and structural optimization of switched reluctance motor are studied to improve the vibration and noise of this type of motor. Starting with the structure of the motor, a switched reluctance motor with a new rotor structure is analyzed and designed. By changing the magnetic field distribution inside the motor, the new rotor structure reduces the vibration and deformation of the stator core and the shell, thereby it can improve the vibration and noise of the motor in operation. By using the finite element analysis method of electromagnetic field, the simulation analysis shows that the radial magnetic force and torque ripple between the stator and rotor of the new type of rotor-structure switched reluctance motor can be reduced to a certain extent, and at the same time the higher efficiency can be obtained, then enhancing the performance of the motor comprehensively. Finally, the simulation results are compared and analyzed to obtain the optimal parameters of the prototype rotor structure.

关键词： Switched Reluctance Motor rotor structure Finite Element Method

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rotor Optimization for Synchronous Reluctance Motors

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CES Transactions on Electrical Machines and Systems 2019年第3期3卷 279-284页

作者： Ken Chen Wenfei Yu Chuanxin Wen B.S.degree in Electrical Engineering from Purdue University West LafayetteUSA the M.S.degree in electric machines at Zhengzhou University of Light Industry ZhengzhouChina School of Electric Eengineering Southeast UniversityNanjingChina M.S.Degrees in Electrical engineering from Southeast University NanjingChina

rotor of Synchronous reluctance motor(SynRM)usually has multiple flux barrier structure for the purpose of higher electromagnetic torque and lower torque ripple.Two different strategies are used in this paper for rotor structure optimization and a compromised strategy for fully squeeze the potential of each related parameters is developed.Performance of resulted rotor structure is evaluated to verify the optimization procedure.

关键词： Finite element analysis maximum torque optimization strategy rotor structure synchronous reluctance motor torque ripple.

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