Characteristic study on a novel PMSM with opposite-rotation dual rotors

Zhang, Fengge; Tiu, Guangwei; Shen, Yongshan

doi:10.1109/icems12746.2007.4412195

Cited by 15 publications

(6 citation statements)

References 3 publications

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“…Axial span ratio of magnetic block waveforms of two rotors and stator in the optimised TDMFM-BDRM with all modulation groups, respectively. The average torques of TDM rotor, PM rotor and stator are 26.1 N⋅m, −26.1 N⋅m and 0.0036 N⋅m, respectively, which can basically verify the correctness of formula (11). Meanwhile, the torque ripples of TDM rotor and PM rotor are 4.47% and 4.42%, respectively.…”

Section: Radial Height Of Magnetic Blocks H M 9mmsupporting

confidence: 53%

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Analysis and experimental verification of transverse‐dislocated magnetic‐field modulated brushless contra‐rotating machine

Wang

Sui

Liu

et al. 2023

IET Electric Power Appl

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The contra‐rotating machine (CRM) has been a preferable selection of the contra‐rotating propulsion system (CRPS) owing to its high efficiency, high compactness, and low noise. However, the conventional CRM with rotating stator has the problem of brush and slip ring, and the conventional brushless CRM has the problem of coordinated control of equal and opposite torque. Aiming at the above problems, this article proposes a transverse‐dislocated magnetic‐field modulated brushless contra‐rotating machine (TDMFM‐BCRM). The proposed TDMFM‐BCRM has some advantages of no rotating winding, no associated brushes and slip rings, and equal and opposite torques at any time, therefore it has good potential for the CRPS. The working principle of the TDMFM‐BCRM including three dimensional magnetic‐field modulated theory, back electromotive force (EMF) generation, and torque relation is studied. Then, the influences of main parameters including magnetic block parameters and PM sizes on torques are investigated. The critical electromagnetic performances of the TDMFM‐BCRM are analysed. A prototype of TDMFM‐BCRM is manufactured and measured to validate the above analysis. Finally, the comparison of the TDMFM‐BCRM and the existing schemes are analysed.

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Section: Radial Height Of Magnetic Blocks H M 9mmsupporting

confidence: 53%

“…To avoid the usage of rotational stator, the axial-flux brushless CRM [8][9][10], and the radial-flux brushless CRM [11,12], were proposed. Both the two brushless CRMs have an intermediate stator with one set of special-arrangement stator winding, and two coaxial rotors on both sides.…”

Section: Introductionmentioning

confidence: 99%

Analysis and experimental verification of transverse‐dislocated magnetic‐field modulated brushless contra‐rotating machine

Wang

Sui

Liu

et al. 2023

IET Electric Power Appl

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“…Good results indicate it can be effectively applied to underwater vehicles. F. Zhang et al [13][14][15][16] studied a dualshaft contra-rotating motor with radial flux, which is composed of one inner rotor, one outer rotor, and one stator with cross-winding in the middle. The prototype experiment proves its good electromagnetic performance.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of the dual‐contra‐rotating motor dependent on propulsion characteristics of underwater vehicles

Cheng

et al. 2023

IET Electric Power Appl

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This paper proposes a dependent optimisation (DO) method for the dual‐contra‐rotating motor to improve the full‐cycle efficiency and increase the space utilizstion rate of the autonomous underwater vehicle (AUV). Particularly, using the DO not only improves the efficiency of the machine at low speed and high speed, but also reduces its total weight by 6.2%, which is beneficial to the heavy‐buoyancy matching and range improvement of the AUV. Moreover, the dependent optimized machine can leave about 5.5 L more space for other AUV systems. Firstly, the geometric constraints and the load characteristics of the dual‐contra‐rotating motor are presented. Based on the analytical model of the electromagnetic field and electromagnetic performance, this paper compares two analytical optimization methods for the machine. One is the independent optimization, that is, the geometric association between the dual‐contra‐rotating motors and the AUV is not considered in the optimization process. The other is DO, which considers the geometric association in the optimization process. After verifying the electromagnetic performance and temperature field with the FEA method, the dual‐contra‐rotating motor prototype was developed. Finally, the consistency of the optimization results and the prototype is verified through experiments.

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“…Radial‐flux PM (RFPM) machines with CR is investigated in Refs. [11–13]. Compared to the AFPM machine with CR, the RFPM machine with CR has disadvantages of asymmetrical structure of internal and external rotors, difficult electromagnetic design and difficult heat dissipation of CR and stator [14].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Characteristics Analysis of a Novel Differential Dual‐Rotor Contra‐Rotating Axial‐Flux PM Motor with Equidirectional Toroidal Winding

Liao,

Li,

Nie

et al. 2023

IEEJ Transactions Elec Engng

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In this paper, a novel differential dual‐rotor contra‐rotating axial‐flux PM (DDC‐AFPM) motor with equidirectional toroidal winding (EDTW) applied to electric propulsion of ships is proposed. Different from the conventional AFPM motor with contra‐rotating rotors (CR), the rotors of the proposed motor on both sides of the stator rotate oppositely at different speeds. The structure of the proposed motor is introduced and the operation principle is clarified. Initial parameters of the proposed motor are given, and the correctness of the simulation results is indirectly verified through the prototype of the AFPM motor with dual‐rotor and EDTW. In order to further improve the electromagnetic performance of the proposed motor, parameters of the motor are preliminarily improved. Finally, the electromagnetic characteristics including armature field, no‐load and on‐load characteristics of the proposed motor are analyzed based on three‐dimensional finite element method (3D‐FEM). The simulation results show that the proposed motor has good electromagnetic characteristics and is suitable for ship propulsion. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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Characteristic study on a novel PMSM with opposite-rotation dual rotors

Cited by 15 publications

References 3 publications

Analysis and experimental verification of transverse‐dislocated magnetic‐field modulated brushless contra‐rotating machine

Analysis and experimental verification of transverse‐dislocated magnetic‐field modulated brushless contra‐rotating machine

Optimisation of the dual‐contra‐rotating motor dependent on propulsion characteristics of underwater vehicles

Electromagnetic Characteristics Analysis of a Novel Differential Dual‐Rotor Contra‐Rotating Axial‐Flux PM Motor with Equidirectional Toroidal Winding

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