Study on the Harmonic Loss of Permanent Magnet Toroidal Space Motor for Hybrid Electric Vehicles

Liu, Xin; Hao, Feng; Wang, Xiaoyuan

doi:10.1109/access.2021.3069851

Cited by 4 publications

(4 citation statements)

References 21 publications

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“…pa (8) where, F (i ) pr is the unbalance magnetic pull of radical direction acting on the planet; F pt (i ) is tangential force driving force of planet self-rotation; F pa (i ) is axial force of planet, which is also driving force of planet carrier rotor. The direction of each component force as indicated in the Fig.…”

Section: Electromagnetic Torque With Non-eccentricitymentioning

confidence: 99%

“…Permanent magnet toroidal motor (PMTM) is a new form of spatial motors which integrates permanent magnet motor and worm-planet transmission. With its significant advantages in terms of large transmission ratio, high transmission efficiency, and compact structure, toroidal motor holds promising prospects for applications in intelligent manufacturing, electric vehicles, and aerospace industries [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The 2D-FEM and prototype experiment is conducted in Sections 6 and 7 respectively, to verify the effectiveness of analytical models. The magnetic teeth of planets meet electromagnetic meshing relationship with magnetic poles of inner stator and the beams of outer stator [8,9,19,20]. When PMTM is running, the windings of inner stator are connected with three-phase alternating current to generate rotating spatial spiral magnetic field.…”

Section: Introductionmentioning

confidence: 99%

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Torque Modeling and Verification of Permanent Magnet Toroidal Motor with Air Gap Deformation

Zhang,

Liu,

Wang

2023

IEEJ Transactions Elec Engng

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Permanent magnet toroidal motor (PMTM) is a novel spatial motor which integrates permanent magnet motor and worm‐planet transmission. The planet eccentricity (PE) and planet carrier rotor eccentricity (PCRE) are two main causes of air gap deformation in PMTM, which results in abnormal rotation of planet and electromagnetic torque fluctuation. In this paper, the air gap deformation in PMTM is classified and analyzed with its mechanism. Based on spatial force analysis for planet, the electromagnetic torque model of PMTM with PE and PCRE are established. The rotation torque with PE is studied from different eccentric distances and angles, which is verified by finite element model (FEM). Simultaneously, the cogging torque of planet rotation with PE is discussed. In addition, the torque experiments are conducted for testing output torque and cogging torque of planet carrier rotor rotation. The variation tendency reflected from proposed torque model is verified by prototype experiment. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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Section: Electromagnetic Torque With Non-eccentricitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Torque Modeling and Verification of Permanent Magnet Toroidal Motor with Air Gap Deformation

Zhang,

Liu,

Wang

2023

IEEJ Transactions Elec Engng

Self Cite

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“…Fig. 1c shows a toroidal MG, [7], again with at least three available shafts. It offers a variable transmission but with a very complex and expensive configuration.…”

Section: Introductionmentioning

confidence: 99%

Novel Differential Evolutionary Optimization Approach for an Integrated Motor-Magnetic Gear Used for Propulsion Systems

et al. 2021

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This paper addresses the proposition of an electrical multiport propulsion system. This traction system contains an electric motor to which a magnetic gear is attached; it is called an integrated motormagnetic gear (IMMG) propulsion unit. This IMMG has two shafts and two levels of torque and speed. Thus, it is suited for the propulsion of an electric tractor, which has different diameters for the front and rear wheels. The IMMG design is optimized based on the differential evolution (DE) algorithm. For such an algorithm, offline tuning of its parameters may fail given the different characteristics of optimization problems. Therefore, a parameter adaptation that considers feedback from the search process can be an alternative. In this work, we propose a novel online strategy to control the DE algorithm's parameters. This strategy is based on a simple adaptation mechanism to generate a promising mutation parameter value for each individual in the population. The design process was evaluated through experiments, and a good correlation was found between the designed performances and tested results.INDEX TERMS differential evolutionary optimization, integrated motor-magnetic gear, EV propulsion.

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An Overview of New Trends in Electric Machine for HEV

Chiboub,

Alami,

Bossoufi

et al. 2024

2024 16th International Conference on Electronics, Computers and Artificial Intelligence (ECAI)

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Study on the Harmonic Loss of Permanent Magnet Toroidal Space Motor for Hybrid Electric Vehicles

Cited by 4 publications

References 21 publications

Torque Modeling and Verification of Permanent Magnet Toroidal Motor with Air Gap Deformation

Torque Modeling and Verification of Permanent Magnet Toroidal Motor with Air Gap Deformation

Novel Differential Evolutionary Optimization Approach for an Integrated Motor-Magnetic Gear Used for Propulsion Systems

An Overview of New Trends in Electric Machine for HEV

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