Proposal of an axial-type magnetic-geared motor

Niguchi, Noboru; Hirata, Katsuhiro; Zaini, Ariff; Nagai, Susumu

doi:10.1109/icelmach.2012.6349956

Cited by 18 publications

(8 citation statements)

References 16 publications

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“…(7) and (8) are obtained, together yielding Eq. The fourth and fifth terms represent the flux produced by the magnetomotive force of the high-speed rotor and the permeance of the stator.…”

Section: Operating Principlesmentioning

confidence: 99%

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Performance Evaluation of an Axial‐Type Magnetic‐Geared Motor

Morimoto

Hirata

Niguchi

2015

Electrical Engineering Japan

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This paper first proposes an axial-type magneticgeared motor that uses permanent magnets only in the high-speed rotor. The operating principle of this motor is described and the torque-speed characteristics are computed by using three-dimensional finite element method analysis. In order to increase the torque density, a novel axial-type magnetic-geared motor with permanent magnets on the high-speed rotor and stator is also proposed. The torque-speed characteristics are compared to the original model with permanent magnets only on the high-speed rotor. Finally, the computed torque-speed characteristics are verified against measurements on a prototype. C⃝ 2015 Wiley Periodicals, Inc. Electr Eng Jpn, 194(1): 48-59, 2016; Published online in Wiley Online Library (wileyonlinelibrary.com).

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“…(7) and (8) are obtained, together yielding Eq. The fourth and fifth terms represent the flux produced by the magnetomotive force of the high-speed rotor and the permeance of the stator.…”

Section: Operating Principlesmentioning

confidence: 99%

“…When the second and fifth terms or the third and fourth terms are aligned, Eqs. (7) and (8) are obtained, together yielding Eq. (9):…”

Section: Operating Principlesmentioning

confidence: 99%

Performance Evaluation of an Axial‐Type Magnetic‐Geared Motor

Morimoto

Hirata

Niguchi

2015

Electrical Engineering Japan

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“…In addition, axial flux magnetically geared PM (AFMGPM) machine topologies for various applications have been presented and analyzed. An axial flux magnetically geared machine with torque density of approximately 15 kNm/m 3 was firstly presented in [11]. Then, several other AFMGPM topologies were proposed and analyzed for wind power applications [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

A Novel Axial Flux Magnetically Geared Machine for Power Split Application

Zhu

Khatab

et al. 2018

IEEE Trans. on Ind. Applicat.

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This paper proposes an axial flux magnetically geared (AFMG) permanent magnet (PM) machine for power split application in hybrid electric vehicles (HEVs). The proposed AFMG machine has the merits of simple structure and improved torque density by combining a magnetic gear (MG) with a PM machine. The machine can realize power split with the help of dual mechanical ports and one electrical port, i.e., the input mechanical power and/or electrical power produced by the machine can be split or integrated. The operation principle and two feasible stator slot/rotor pole combinations are analyzed. Moreover, the influence of the machine parameters on the output torque as well as the performance of both combinations are investigated and compared by using JMAG three dimensional (3D) finite element analysis (FEA). In addition, the method of boosting the machine torque is described and experiment results of the proposed machine prototype are provided and compared with FEA results.

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“…The axial magnetic-field-modulated brushless double rotor machine (MFM-BDRM) comprizes three parts: a stator, a modulating ring rotor and a permanent magnet rotor [18,19]. The modulating ring rotor, composed of evenly distributed ferromagnetic pole pieces and nonmagnetic pole pieces, is sandwiched between the stator and the permanent magnet rotor [20][21][22][23]. The brushless CS-PMSM system based on axial MFM-BDRM is a competitive alternative for HEV application, which is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Research on an Axial Magnetic-Field-Modulated Brushless Double Rotor Machine

et al. 2013

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Double rotor machine, an electronic continuously variable transmission, has great potential in application of hybrid electric vehicles (HEVs), wind power and marine propulsion. In this paper, an axial magnetic-field-modulated brushless double rotor machine (MFM-BDRM), which can realize the speed decoupling between the shaft of the modulating ring rotor and that of the permanent magnet rotor is proposed. Without brushes and slip rings, the axial MFM-BDRM offers significant advantages such as excellent reliability and high efficiency. Since the number of pole pairs of the stator is not equal to that of the permanent magnet rotor, which differs from the traditional permanent magnet synchronous machine, the operating principle of the MFM-BDRM is deduced. The relations of corresponding speed and toque transmission are analytically discussed. The cogging toque characteristics, especially the order of the cogging torque are mathematically formulated. Matching principle of the number of pole pairs of the stator, that of the permanent magnet rotor and the number of ferromagnetic pole pieces is inferred since it affects MFM-BDRM's performance greatly, especially in the respect of the cogging torque and electromagnetic torque ripple. The above analyses are assessed with the three-dimensional (3D) finite-element method (FEM).

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Proposal of an axial-type magnetic-geared motor

Cited by 18 publications

References 16 publications

Performance Evaluation of an Axial‐Type Magnetic‐Geared Motor

Performance Evaluation of an Axial‐Type Magnetic‐Geared Motor

A Novel Axial Flux Magnetically Geared Machine for Power Split Application

Research on an Axial Magnetic-Field-Modulated Brushless Double Rotor Machine

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