Electromagnetic design and performance analysis of a two‐phase AFPM BLDC motor for the only‐pull drive technique

Yazdan, Tanveer; Kwon, Byung-il

doi:10.1049/iet-epa.2017.0709

Cited by 14 publications

(5 citation statements)

References 25 publications

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“…Although the optimization criteria are the same for a given electrical load and magnetic flux density, the optimal value of λ varies depending on the rated power demand, pole pairs and motor structure [55,56]. Additionally, reference [57][58][59][60] pointed out that the reasonable definition of parameters such as magnetic flux density, electrical load and current density could achieve a good estimation of the main geometric dimensions of AFPM motor, which was helpful for the parameter matching and design optimization of subsequent design and analysis of AFPM motors.…”

Section: Sizing Equationmentioning

confidence: 99%

A Review of Axial-Flux Permanent-Magnet Motors: Topological Structures, Design, Optimization and Control Techniques

Hao

Wang

et al. 2022

Machines

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Axial-flux permanent-magnet (AFPM) motors are a kind of important motor with compact structure, high power density and high torque density. In this review, the progress of AFPM motors and their key technologies are analyzed and described, with emphasis on the topological structures, design and optimization methods and control techniques. Based on these analyses, the main findings of the review are the following: (1) the yokeless and segment armature (YASA)-type motors have great potential for development; (2) the multi-objective optimization design theories can be integrated and applied to optimize the design of AFPM motors; and (3) optimal control and sensorless control have important value in improving system reliability and reducing cost. Finally, highlights and prospects are provided for further advancing AFPM motors.

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Section: Sizing Equationmentioning

confidence: 99%

A Review of Axial-Flux Permanent-Magnet Motors: Topological Structures, Design, Optimization and Control Techniques

Hao

Wang

et al. 2022

Machines

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“…However, the PMs can be demagnetised due to armature winding temperature under peak torque. Some of yokeless and segmented armature (YASA) axial flux in-wheel motors are proposed and analysed since their higher torque density compared with radial flux motors [15,16]. In addition, the absence of the stator yoke in the YASA type makes it more efficient and higher power density.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluating of rotor arrangement on high torque density in‐wheel permanent magnet machines

Wang

2023

IET Electric Power Appl

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This article presents a new rotor with fractional slot distribution winding permanent magnet (FSDWPM) machine to improve the torque density of in‐wheel motor. In order to achieve the high torque/power density and reduced material weight with constrained rotor inner diameter and stator outer diameter, three traditional rotor topologies, including single‐layer V‐shaped, double‐layer V‐shaped, and delta‐type, are selected and compared with the proposed FSDWPM machine. Subsequently, the corresponding basic electromagnetic performances, including open‐circuit back‐EMFs, on‐load torque, and efficiency distributions, of the four machines are investigated and compared by finite element (FE) analysis. The simulated results shows that the proposed rotor arrangement exhibits the highest average torque, excellent field‐weakening capability, the largest high‐efficiency region compared with conventional rotor structures. Finally, a 50 kW FSDWPM machine prototype with double‐layer PM arrangement is manufactured, and some experimental results are conducted to confirm the feasibility and effectiveness of the proposed design.

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“…There are a few studies on disc-type (or axial flux) topologies of brushed DC motors, including their design (Bailey et al , 1990), (Sharkh and Mohammad, 2007), as well as, analytical (Campbell, 1975; Campbell, 1979) and numerical analyses (Sharkh and Mohammad, 2002). Nevertheless, disc-type brushless DC (BLDC) motors are much more common, comparing the number of published works (Gieras et al , 2008; De et al , 2012; Yazdan and Kwon, 2018). It has been proved long ago that the disc-type topology have some unique features, such as high torque density and modular manufacturing capability.…”

Section: Introductionmentioning

confidence: 99%

Design of a small disc-type coreless permanent magnet brushed DC actuator

Pahlavani

Tahanian

2021

COMPEL

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Purpose Design of small disc-type permanent magnet (PM) brushed DC motors for servomechanisms is challenging. The purpose of this paper is to propose a special coreless double-sided structure. This easy to manufacture motor has two set of shifted concentrated windings on both sides of the rotor. All of the coils in each winding are simply connected in series. A simple arcless commutator, which shares the features of both the usual commutators and slip rings, is connected to each winding at only two points. Design/methodology/approach By replacing the PMs with an equivalent current density, main design equations of the motor have been derived through the solving of scalar Poisson equation. A radial division technique has been used to take the radial variations into account. This provides the ability of considering various shapes of coils and PMs. A novel iterative algorithm has been proposed to design a motor with high torque capability, compared to other coreless counterparts. Some design variables are obtained based on an independent optimization problem, which maximizes the active portion of windings. The other variables are calculated in such a way that the design requirements are satisfied. Findings The feasibility and capability of the new structure have been proved by prototyping a sample motor. Comparing the design outputs with the results of the 3D finite element analysis and experimental tests shows a good agreement. This verifies the accuracy of the proposed design method. Originality/value A new structure for PM brushed DC motors and a novel algorithm for its design has been developed.

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Electromagnetic design and performance analysis of a two‐phase AFPM BLDC motor for the only‐pull drive technique

Cited by 14 publications

References 25 publications

A Review of Axial-Flux Permanent-Magnet Motors: Topological Structures, Design, Optimization and Control Techniques

A Review of Axial-Flux Permanent-Magnet Motors: Topological Structures, Design, Optimization and Control Techniques

Performance evaluating of rotor arrangement on high torque density in‐wheel permanent magnet machines

Design of a small disc-type coreless permanent magnet brushed DC actuator

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