Calculation and Analysis of Cogging Torque and End Copper Loss of Fractional Slot Concentrated Winding PMSM

Dang, Chengtao; Wang, Wensheng; Wang, Dongwen; Tong, Ningze; Chen, Xiaolei

doi:10.1109/icems.2019.8921680

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…In addition, the axial length of the dual-contra-rotating motor will also be limited by the generatrix of the AUV tail. The concentrated winding can effectively reduce the end length of the winding, thereby reducing the axial length of the motor and is beneficial for reducing the copper loss of the motor [17]. Therefore, the dual-contra-rotating motor will adopt a concentrated winding.…”

Section: Scheme Of the Dual-contra-rotating Motormentioning

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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Section: Scheme Of the Dual-contra-rotating Motormentioning

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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show abstract

“…It has the advantages of short end winding, less consumption of copper materials, less Joule loss, convenient winding processing, and high slot fill rate [5]. In addition, for slotted PMSM, FSCW configuration can also reduce cogging torque [6]. Because of these advantages of FSCW, PMSM with FSCW is gained increased interest in both academic and various industries sectors such as wind energy, automotive and airspace, house-holding appliances and many others in recent years [7,8].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis between Slotless Axial Flux Permanent Magnet Motor with Equidirectional Toroidal Winding and Integral‐Slot Winding

Wei

Han

et al. 2022

IEEJ Transactions Elec Engng

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Fractional slot concentrated winding (FSCW) is a kind of winding structure with few‐slots/coils multi‐poles. FSCW has the potential value of high torque density due to its short end‐winding and high slot fill ratio and is widely used in low‐speed direct‐drive application situations. However, compared with integral slot winding (ISW), the back EMF coefficient of FSCW is smaller, which leads to smaller output torque under the same condition. To improve the back EMF coefficient of FSCW, equidirectional toroidal winding (ETW) is proposed and applied to the dual rotor slotless axial flux permanent magnet motor (AFPM), in which the unit structure is three slots/coils two poles, and the ideal back EMF coefficient is the same as that of ISW. In this paper, firstly, the structure of ETW is introduced and its operating principle is analyzed. Then, compared with the AFPM with ISW, the open circuit and load characteristics of the AFPM with ETW under two conditions of the same wire gauge and the same coil width are analyzed respectively. The back EMF coefficient and output torque of ETW‐AFPM are similar to that of ISW‐AFPM under the same coil width. The back EMF coefficient and output torque of ETW‐AFPM are a little lower than that of ISW‐AFPM under the same wire gauge. Finally, the experimental results also validate the feasibility of AFPM with ETW and the correctness of the analysis results. © 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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Tracking of cogging stiffness using the multi-bin SDFT

Vanbecelaere,

De Viaene,

Monte

et al. 2024

Mechanics Based Design of Structures and Machines

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Calculation and Analysis of Cogging Torque and End Copper Loss of Fractional Slot Concentrated Winding PMSM

Cited by 5 publications

References 4 publications

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

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

Comparative Analysis between Slotless Axial Flux Permanent Magnet Motor with Equidirectional Toroidal Winding and Integral‐Slot Winding

Tracking of cogging stiffness using the multi-bin SDFT

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