Investigation of field excitation switched flux motor with segmental rotor

Sulaiman, Erwan; Khan, Faisal; Ahmad, M. Z.; Jenal, Mahyuzie; Zulkifli, Shamsul Aizam; Bakar, Afarulrazi Abu

doi:10.1109/ceat.2013.6775648

Cited by 11 publications

(8 citation statements)

References 18 publications

(15 reference statements)

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“…Figure 7 shows the cogging torque investigation of the machines: It is observed that 12S-14P operating at the electrical 25.7° of rotor rotation pulsated to 5 Nm peak, 12S-10P with 36 electrical degrees 6 Nm peak, 6S-7P and 6S-8P rotating with 45°e lectrical recording 60 Nm and producing three 10697 electrical cycles which is not safe for machine operation. For 12S-7P, though rotating at 51.4 electrical degrees achieves 10 Nm has odd number of rotor pole creates an unbalanced field distribution in the air-gap making the machine to have an unbalance magnetic-pull during motor operation (Kannan, 2012;Ahmad et al, 2013;Chao et al, 1996). Therefore, 12S-14P with the lowest electrical cycle producing 6 cycles of smooth waveform with the lowest cogging torque is considered the best and can be further reduced at the stage of optimization.…”

Section: Fea Based Performances Analysismentioning

confidence: 99%

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A New Outer Rotor Permanent Magnet Flux Switching Machine using Segmental Rotor for Electric Scooter

I.¹,

Sulaiman²,

Liew³

2020

J. Eng. Appl. Sci.

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Electric scooter is a brand of motorcycle using electric motors powered by electricity that is stored in a rechargeable battery. It does not have combustion engine and does not also use fossil fuel for propulsion. The electric motors installed in them improve their performances in terms of energy saving, less heat loss and quick torque response. As a result, they are solution for eliminating high cost of fossil fuel and environmental pollution that contributes to global warming. At the present time, electric motors in electric scooters is a surface mounted Permanent Magnet (PM) motor type 11" Radial Hub and is not suitable for a distance travel up to 100 km due to location of PMs on the rotating rotor. This study proposes a permanent magnet flux switching motor using segmental rotor in outer rotor configuration with the benefit of direct fabrication to sprocket and robust rotor to contain high speed. The geometric design of this motor is introduced using the parameters of eclimo electric scooter. About 2Dimensional Finite Element Analysis (2D-FEA), JMAG Software released by Japan Research Institute Version 14 is used to investigate four machine performances in terms of flux distribution, cogging torque, induced back-EMF, torque and speed versus power characteristics. Preliminary results showed that 12 slots-14 poles has high torque and high power sustainability for long distance travel.

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Section: Fea Based Performances Analysismentioning

confidence: 99%

“…PMFSM has Permanent Magnet (PM) as its main source of flux. WFFSM has field coil while HEFSM combines both PM and field coil as sources of excitation (Fei et al, 2013;Sulaiman et al, 2013;Jenal et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

A New Outer Rotor Permanent Magnet Flux Switching Machine using Segmental Rotor for Electric Scooter

I.¹,

Sulaiman²,

Liew³

2020

J. Eng. Appl. Sci.

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“…Appealing features of FSMs include simple construction and easy manufacture, robustness since the rotor is a single piece of magnetic steel laminations [98] with neither PMs nor windings, high air gap flux density and therefore high power and torque densities [97,99,100]. Therefore FSMs can be used in harsh environments.…”

Section: Flux Switching Machines (Fsms)mentioning

confidence: 99%

Rare-earth-free propulsion motors for electric vehicles: A technology review

Riba

López-Torres

Romeral

et al. 2016

Renewable and Sustainable Energy Reviews

192

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Several factors including fossil fuels scarcity, prices volatility, greenhouse gas emissions or current pollution levels in metropolitan areas are forcing the development of greener transportation systems based on more efficient electric and hybrid vehicles. Most of the current hybrid electric vehicles use electric motors containing powerful rare-earth permanent magnets. However, both private companies and estates are aware of possible future shortages, price uncertainty and geographical concentration of some critical rare-earth elements needed to manufacture such magnets. Therefore, there is a growing interest in developing electric motors for vehicular propulsion systems without rare-earth permanent magnets. In this paper this problematic is addressed and the state-of-the-art of the electric motor technologies for vehicular propulsion systems is reviewed, where the features required, design considerations and restrictions are addressed.

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“…The FSPMM has attracted so much interest due to its advantages of loss-free excitation and elimination of connections to external stationary electric circuits, thereby recording less copper loss. This motor has various factors including advances in magnetic material, and computer aided design tools [10][11][12]. With PM being the natural source of flux, various topologies have been designed for numerous allied purposes suchas automotive, lost cost appliance, aerospace.…”

Section: Introductionmentioning

confidence: 99%