Fractional Slot Concentrated Winding Permanent Magnet Synchronous Machine With Consequent Pole Rotor for Low Speed Direct Drive

Chung, Shi-Uk; Kim, Jong-Moo; Koo, Dae‐Hyun; Woo, Byung-Chul; Hong, Do-Kwan; Lee, Ji-Young

doi:10.1109/tmag.2012.2196417

Cited by 100 publications

(28 citation statements)

References 9 publications

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“…Non-overlapping series concentrated winding is used for both inner and outer stators to reduce the losses. With shorter end-windings, lower harmonic magnetomotive force MMF, reduced eddy current losses in the PM and higher slot fill ratio [16][17][18] is highly feasible. The performance characteristics of DSSR-PMG are evaluated through the improved generation capability.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Double Stator Slotted Rotor Permanent Magnet Generator

Ahmad

Othman

et al. 2017

Energies

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This paper discusses the modeling and analysis of three phase double stator slotted rotor permanent magnet generator (DSSR-PMG). The use of double stator topology through the double magnetic circuit helps to maximize the usage of flux linkage in the yoke structure of the single stator topology. The analytical computation is done using Permeance Analysis Method (PAM). Finite Element Analysis (FEA) is used for numerical verifications and to verify the design structure a prototype laboratory is performed. The analysis is done with various loading conditions to derive the electromagnetic torque, output power and efficiency for the proposed structure. The analytical, numerical and experimental results from the analysis are found to be in good agreement. The maximum power developed by this generator at rated speed of 2000 rpm is of 1 kW with the operational efficiency of 75%. A rectifier bridge circuit is used to make the generated voltage a storage capable constant voltage to make it suitable for mobile applications (such as Direct Current DC generator). The proposed generator structure is highly recommended for applications such as micro-hydro and small renewable plants.

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Section: Introductionmentioning

confidence: 99%

Modeling and Analysis of Double Stator Slotted Rotor Permanent Magnet Generator

Ahmad

Othman

et al. 2017

Energies

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“…A series of motor technologies has been investigated for direct-drive applications, such as the multi-pole permanent magnet synchronous motor (PMSM) [1], the brushless DC motor (BLDC) [2], the permanent magnet vernier motor (PMVM) [3][4][5] and the transverse flux motor (TFM) [6][7][8][9]. Among those motor technologies, the transverse flux motor has a unique transverse main flux path that is perpendicular to the rotate direction.…”

Section: Introductionmentioning

confidence: 99%

“…They can be classified into synchronous type and reluctance type [15]: (1) if the permanent magnets are fixed on the rotor side (including mounted on the rotor core surface or buried into the rotor core), the motor can be classified as a transverse flux permanent magnet synchronous motor (TFPM) [16,17]; (2) if there is no permanent magnet on the rotor side, the motor can be classified as a transverse flux reluctance motor (TFRM) [18]. The TFPM can obtain larger torque density than the TFRM; meanwhile, the manufacturing cost of TFRM is lower and reliability of TFRM is higher.…”

Section: Introductionmentioning

confidence: 99%

Torque Characteristic Analysis of a Transverse Flux Motor Using a Combined-Type Stator Core

Yang¹,

Kou²,

Luo³

et al. 2016

Applied Sciences

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An external rotor transverse flux motor using a combined-type stator core is proposed for a direct drive application in this paper. The stator core is combined by two kinds of components that can both be manufactured conveniently by generic laminated silicon steel used in traditional motors. The motor benefits from the predominance of low manufacturing cost and low iron loss by using a silicon-steel sheet. Firstly, the basic structure and operation principles of the proposed motor are introduced. Secondly, the expressions of the electromagnetic torque and the cogging torque are deduced by theoretical analysis. Thirdly, the basic characteristics such as permanent magnet flux linkage, no-load back electromotive force, cogging torque and electromagnetic torque are analyzed by a three-dimensional finite element method (3D FEM). Then, the influence of structure parameters on the torque density is investigated, which provides a useful foundation for optimum design of the novel motor. Finally, the torque density of the proposed motor is calculated and discussed, and the result shows that the proposed motor in this paper can provide considerable torque density by using few permanent magnets.

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“…In the past decades, PMSMs equipped with fractional-slot concentrated windings (FSCWs) have increasingly been used in EV applications [1][2][3][4][5][6][7]. With such windings the concentrated coils are wound either on adjacent or alternate teeth, which reduces the end winding length.…”

Section: Introductionmentioning

confidence: 99%

Research on a 20-Slot/22-Pole Five-Phase Fault-Tolerant PMSM Used for Four-Wheel-Drive Electric Vehicles

Sui

Zheng

et al. 2014

Energies

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This paper presents a five-phase fault-tolerant permanent-magnet synchronous machine (PMSM) used for electric vehicles. In multiphase fault-tolerant PMSMs equipped with fractional-slot concentrated windings, excessive magneto-motive force (MMF) harmonics can lead to thermal demagnetization of the permanent magnets (PMs). In order to reduce the lower-order harmonics, the origins of the 2-pole harmonic in conventional winding configurations are investigated, and an unequal-turn winding configuration is applied to cancel the lower-order harmonics. The main electromagnetic performances of the unequal-turn winding configuration are investigated and compared with conventional winding topologies. Based on the principle of maintaining constant instantaneous power, the fault-tolerant control strategies for open-circuits of up to two phases are developed. All of the investigations are verified by finite element analysis (FEA) results.

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Fractional Slot Concentrated Winding Permanent Magnet Synchronous Machine With Consequent Pole Rotor for Low Speed Direct Drive

Cited by 100 publications

References 9 publications

Modeling and Analysis of Double Stator Slotted Rotor Permanent Magnet Generator

Modeling and Analysis of Double Stator Slotted Rotor Permanent Magnet Generator

Torque Characteristic Analysis of a Transverse Flux Motor Using a Combined-Type Stator Core

Research on a 20-Slot/22-Pole Five-Phase Fault-Tolerant PMSM Used for Four-Wheel-Drive Electric Vehicles

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