Design study of single phase outer-rotor hybrid excitation flux switching motor for hybrid electric vehicles

Mazlan, Mohamed Mubin Aizat; Sulaiman, Erwan; Kosaka, Takashi

doi:10.1109/peoco.2014.6814414

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…FSM consists of all flux sources in the stator. Besides the advantage of brushless machines, FSM has a single piece of iron rotor structure allowing to be apply in robust and high-speed applications [1]. Over the past ten years, many new FSM topologies have been developed for various applications, ranging from low-cost domestic appliances, automotive, wind power, aerospace, and others [2], [3].…”

Section: Introductionmentioning

confidence: 99%

Optimal design of single-phase 12S-6P FEFSM using segmental rotor and non-overlap windings

Omar

Sulaiman

Soomro

et al. 2019

IJEECS

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<span>Recently, a three-phase Field Excitation Flux Switching Motor (FEFSM) using salient rotor has been introduced, suitable for high torque, high power as well as high speed diverse performances due to their advantages of easy rotor temperature elimination and controllable field excitation (FE) flux. However, existing FEFSMs are found to have low torque performance as the salient rotor structure has caused longer flux path, and consequently weak flux linkage. Therefore, a new structure of a single-phase FEFSM using segmental rotor and non-overlap windings is proposed. There are two valuable findings found in this topology, first is less copper loss due to the non-overlap windings between armature and FE coils, and secondly the segmental rotor structure has produces shorter flux path to produce high torque, less rotor weight as well as robust rotor at high speed condition. Flux linkage, back-emf, average torque and output power characteristics of the initial and optimized designs have been investigated and compared using 2D Finite Element Analysis (2D-FEA) through JMAG Designer version 15. Based on the 2D-FEA analysis, the average torque has increased by 81.3% to 1.65 Nm, while the output power of 466.5 W, increased of 68.2%. In conclusions, a FEFSM using segmental rotor and non-overlap windings is considered as the best single-phase motor due to their optimal performances and less copper loss.</span>

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Section: Introductionmentioning

confidence: 99%

Optimal design of single-phase 12S-6P FEFSM using segmental rotor and non-overlap windings

Omar

Sulaiman

Soomro

et al. 2019

IJEECS

View full text Add to dashboard Cite

show abstract

“…The first concept of FSM was founded and published in mid-1950s. The main features of FSM is all active parts such as coil windings and permanent magnet are placed on stator, single piece of rotor structure, and free from brush maintenance [5]. Over the past three decades, numerous FSM topologies have been developed for various applications, ranging from low-cost domestic appliances, automotive, wind power, aerospace, and others [6].…”

Section: Introductionmentioning

confidence: 99%

Performance Comparison between Salient and Segmental Rotors Single-Phase FEFSM Using Non-Overlap Windings for Home Appliances

Omar¹,

Sulaiman²,

Soomro³

et al. 2018

IJET

Self Cite

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Field excitation flux switching machines (FEFSMs) in which their torque performance produced by interaction between armature and field excitation (FE) coils have been widely designed for various applications. In this regard, three-phase salient rotor FEFSM with overlap windings is considered the most suitable candidate for high speed applications because of their advantages of flux controllability, and robust due to single piece of rotor structure. However, the overlap windings cause a high copper loss, hence efficiency of the motor becomes low and higher stack length. Besides, the salient rotor structure is found to produce low torque performance due to the longer flux path in stator and rotor yielding weak flux linkage. In this paper, a new single-phase FEFSM using non-overlap windings between armature coils and FE coils is proposed. Both non-overlap windings FEFSMs with salient and segmental rotors have been designed using JMAG Designer version 15 and the investigation process is conducted via 2D finite element analysis. The proposed motor performances verification has been done by comparing the results of flux linkage, flux line and distribution, flux strengthening, various torque capability, and torque-power versus speed characteristics. As a conclusion, single-phase non-overlap windings FEFSM using segmental rotor with power, torque and speed capabilities of 277.5 W, 0.91 Nm and 2,899 rpm, respectively considered as the best candidate for low torque high speed applications.

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“…This system leads to the transmission losses and reduce the efficiency and reliability of the motor [19]. Since, the outer-rotor configuration is more suitable for direct drive application the PMFSM with outerrotor has been proposed only for light EV applications.…”

Section: Introductionmentioning

confidence: 99%

Topologies of single-phase outer-rotor hybrid excitation flux switching motor for in wheel drive applications

Mazlan

Sulaiman

Ahmad

et al. 2014

2014 IEEE Conference on Energy Conversion (CENCON)

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Most of commercial Hybrid Electric Vehicle (HEV)used single motor and transmission gears coupled to the wheels. This system leads to the transmission losses and reduce the efficiency and reliability of the motor. Therefore, in-wheel direct drive mechanism is introduced to overcome this problem. In-wheel direct drive eliminates the mechanical transmission, differential gears and drive belts. Thus, in-wheel direct drive provides quick torque response, higher efficiency, weight reduction, and increased vehicle space. As one of alternative, a new design of hybrid excitation flux switching motor (ORHEFSM) for in-wheel drive EV is proposed. First coil arrangement tests are analyzed to confirm the phase of each armature coil phase. Then, flux comparison of PM with DC FEC, flux linkage at various FEC current densities, cogging torque, induced voltage/ back EMF of PM with DC FEC, torque and power versus FEC current density at various armature coil current densities are also analyzed. The generated results show that the appropriate combination of stator slot-rotor pole configurations are 8S-4P and 8S-8P respectively, which initially provide highest torque performance and power density. By further design modification and optimization it is expected that the low cost motor will successfully achieved the target performances.

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Design study of single phase outer-rotor hybrid excitation flux switching motor for hybrid electric vehicles

Cited by 9 publications

References 9 publications

Optimal design of single-phase 12S-6P FEFSM using segmental rotor and non-overlap windings

Optimal design of single-phase 12S-6P FEFSM using segmental rotor and non-overlap windings

Performance Comparison between Salient and Segmental Rotors Single-Phase FEFSM Using Non-Overlap Windings for Home Appliances

Topologies of single-phase outer-rotor hybrid excitation flux switching motor for in wheel drive applications

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