Design and analysis of high-power/high-torque density dual excitation switched-flux machine for traction drive in HEVs

Sulaiman, Erwan; Kosaka, Takashi; Matsui, Nobuyuki

doi:10.1016/j.rser.2014.03.030

Cited by 39 publications

(28 citation statements)

References 25 publications

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“…The design restrictions and specifications of the proposed outer-rotor PMFSM with DC FEC are based on the inner-rotor HEFSM and IPMSM designed for HEV listed in Table 1 [19]. In this design, the target performances of the maximum torque and power were expected to be >333 Nm and 123 kW, respectively, under the maximum inverter current, voltage, armature current density, and FEC current density ratings of 360 A rms , 650 V, 30 A rms / mm 2 , and 30 A/mm 2 , respectively.…”

Section: Design Restrictions and Specificationsmentioning

confidence: 99%

“…However, to date, most of the designed FSMs are mainly focused on inner-rotor configurations [16,19] and earliest report on the outer-rotor PMFSM was published in 2010 where the machine target is to be applied for light traction EV applications [20,21]. Nonetheless, with a single magnetic flux source of a constant PM, it may also suffer from the demagnetization effect and uncontrollable flux.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of High Torque and Power Densities Outer-Rotor PMFSM with DC Excitation Coil for In-Wheel Direct Drive

Ahmad¹,

Sulaiman²,

Kosaka³

2015

Journal of Magnetics

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In recent years, flux switching machines (FSMs) have been an attractive research topic owing to their tremendous advantages of robust rotor structure, high torque, and high power capability suitable for intensive applications. However, most of the investigations are focusing on the inner-rotor structure, which is incongruous for direct drive applications. In this study, high torque and power densities of a new 12S-14P outer-rotor permanent magnet (PM) FSM with a DC excitation coil was investigated based on two-dimensional finite element analysis for in-wheel direct drive electric vehicle (EV). Based on some design restrictions and specifications, design refinements were conducted on the original design machine by using the deterministic optimization approach. With only 1.0 kg PM, the final design machine achieved the maximum torque and power densities of 12.4 Nm/kg and 5.93 kW/kg, respectively, slightly better than the inner-rotor HEFSM and interior PM synchronous machine design for EV.

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Section: Design Restrictions and Specificationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of High Torque and Power Densities Outer-Rotor PMFSM with DC Excitation Coil for In-Wheel Direct Drive

Ahmad¹,

Sulaiman²,

Kosaka³

2015

Journal of Magnetics

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“…More recently, PM flux switching motor (PMFSM) that applied a "flux switching" concept has attractive research topic due to their extreme advantages of robust rotor structure and high torque density [8], [9]. The active components such as PM and armature coil of the motor are housed at the stator, while rotor is only consist a stack of iron core similar to switched reluctance motor (SRM).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Permanent Magnet Demagnetization Effect Outer-rotor Hybrid Excitation Flux Switching Motor

Ahmad¹,

Sulaiman²,

Rahimi³

et al. 2017

IJPEDS

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This paper addresses the irreversible permanent magnet (PM) demagnetization analysis of hybrid excitation flux switching motor (HEFSM) with outer-rotor configuration. PM demagnetization cause the PM strength used in the motor significantly reduces and hence contributes less torque performance. The study is focused on thermal analysis and conducted at various temperature up to as high as 180 degrees Celsius which has a tendency to be demagnetized. Therefore, PM demagnetization is among a critical issue and influences the choice of the applied motor. The analysis is carried out based on finite element method (FEM) and percentage of PM demagnetization is then calculated. Finally, based on simulated and calculated results the final design outer-rotor HEFSM has only 0.85 percent PM demagnetization at very high temperature and obviously the is no PM demagnetization at normal operating conditions.

show abstract

“…However, to date, most of the designed FSMs are mainly focused on inner-rotor configurations [16,19] and earliest report on outer-rotor PMFSM has been published in 2010 where the machine target is to be applied for light traction EV applications [20,21]. Nonetheless, with single magnetic flux source of constant PM, it also may suffer from demagnetization effect and uncontrollable flux.…”

Section: Introductionmentioning

confidence: 99%

Optimization of outer-rotor hybrid excitation FSM for in-wheel direct drive electric vehicle

Ahmad

Sulaiman

Kosaka

2015

2015 IEEE International Conference on Mechatronics (ICM)

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Abstract-Research on flux switching machines (FSMs) has been an attractive topic recently due to tremendous advantages of robust rotor structure, high torque, and high power capability that suits for intense applications. However, most of the investigations are focusing on inner rotor structure which incongruous for direct drive applications. In this paper, the design optimization and performance analysis of 12Slot-14Pole hybrid excitation flux switching machine (HEFSM) with outer-rotor configuration are conducted for in-wheel direct drive electric vehicle (EV). Similar with conventional inner-rotor HEFSMs, two magnetic flux sources of permanent magnet (PM) and field excitation coil (FEC) have extra advantage of variable flux control capability, while the outer-rotor configuration has ability to provide much higher torque and power density suitable for inwheel EV drives. Based on some design restriction and specification, design refinements are conducted on the initial design machine by using deterministic optimization approach. The final design machine has achieved maximum torque and power density of 335.08Nm and 5.93kW/kg, respectively, slightly better than inner rotor HEFSM and interior permanent magnet synchronous machine (IPMSM) design for EV.

show abstract

Design and analysis of high-power/high-torque density dual excitation switched-flux machine for traction drive in HEVs

Cited by 39 publications

References 25 publications

Analysis of High Torque and Power Densities Outer-Rotor PMFSM with DC Excitation Coil for In-Wheel Direct Drive

Analysis of High Torque and Power Densities Outer-Rotor PMFSM with DC Excitation Coil for In-Wheel Direct Drive

Analysis of Permanent Magnet Demagnetization Effect Outer-rotor Hybrid Excitation Flux Switching Motor

Optimization of outer-rotor hybrid excitation FSM for in-wheel direct drive electric vehicle

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