Preliminary studies on a new outer-rotor permanent magnet flux switching machine with hybrid excitation flux for direct drive EV applications

Ahmad, M. Z.; Sulaiman, Erwan; Haron, Zainal Alam; Kosaka, Takashi

doi:10.1109/pecon.2012.6450350

Cited by 34 publications

(23 citation statements)

References 13 publications

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“…First of all, flux linkage is examined in each armature coil slot at 1200r/min base speed. The flux source comes from the PM only while DC-FEC current is set at 0A [19]. After that, analyzing continue to determine the position of each armature coil phase.…”

Section: Results and Analysis 31 Coil Test Analysismentioning

confidence: 99%

Performance Analysis of 12Slot with Various Rotor Pole Numbers HE-FSM for HEV Application

Rahimi¹,

Ahmad²,

Sulaiman³

et al. 2017

IJPEDS

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This paper presents performance analysis of 12Slot with various rotor pole numbers Hybrid Excitation Flux Switching Machine (HEFSM) for Hybrid Electric Vehicles (HEVs) application. HEFSM has carried out by combining the advantage of Permanent Magnet (PM) machines and DC Field Excitation Coil (FEC) synchronous machines. Previously, most of HEFSM structure having FEC windings in theta direction that create a problem of flux cancellation that will affect the performances of the machine. Thus, a design of 12Slot HEFSM with FEC wounded in radial direction is proposed to eliminate the flux cancellation effect. At first, armature coil arrangement test at no-load condition is conducted to analyze PM flux. Furthermore, induced voltage and cogging torque at open circuit condition are investigated based on 2D finite element analysis (FEA). Finally, torque and power performances are also examined at maximum FEC and armature current densities. The outcomes demonstrate that 12S-14P configuration has the highest PM flux linkage, torque, power and less distortion of back-emf waveform which are required to be used as a motor in HEVs. The highest torque and power achieved are 220.15Nm and 92.45kW, respectively.

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Section: Results and Analysis 31 Coil Test Analysismentioning

confidence: 99%

Performance Analysis of 12Slot with Various Rotor Pole Numbers HE-FSM for HEV Application

Rahimi¹,

Ahmad²,

Sulaiman³

et al. 2017

IJPEDS

View full text Add to dashboard Cite

show abstract

“…This machine uses less materials for its construction, making its construction cost low. FSM has three kinds arising from excitation sources such as flux switching permanent magnet machine (FSPMM) whose source of excitation is PM, field excitation flux switching machine with field excitation coil (FEFSM) and hybrid excitation flux switching machine (HEFSM) which employs both PM and FE as main source and secondary source respectively [7]- [9]. Due to its loss-free source of excitation, the choice of FSPM motor is adopted for ESV application.…”

Section: High Torque Flux Switching Permanent Magnet Machine In Segmementioning

confidence: 99%

High Torque Flux Switching Permanent Magnet Machine in Segmented Outer Rotor using Appropriate Split Ratio for Electric Scooter Propulsion

Mbadiwe¹,

Sulaiman²,

Zarafi³

et al. 2017

IJPEDS

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Recently, permanent magnet synchronous machine (PMSM) having the diameter of 11inches was successfully developed and installed in electric scooter vehicle (ESV) for propulsion. It consists of segmented stators of 24 armature slots and 100 pieces of permanent magnet of 2 kg weight mounted on rotating rotor. Upon the huge amount of materials and permanent magnet used, PMSM produced 110Nm only. Looking at the size, this torque is low and could not sustain acceleration for long distance travels. To overcome the challenge of low torque, this paper presents a new machine type, flux switching motor (FSM) with 1 kg weight of permanent magnet flux source employing segmented outer rotor. Six ranges of split ratio of 0.80-0.85 for outer rotor 24slot-14pole FSPM motor configurations were designed and compared. The 2D-FEA by JMAG software version 14 is used to examine its performance in term of flux linkage, cogging torque, back-emf and average torque which the structure with split ratio of 0.85 took lead by securing highest torque profile of 209Nm. It also achieved low cogging torque to operate in safe region. In conclusion, appropriate split ratio significantly enhances high torque capability of permanent magnet flux switching motor for electric scooter propulsion.

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“…The design restrictions and specifications of the proposed outer-rotor HEFSM are similar with the interior permanent magnet synchronous machine (IPMSM) that conventionally employed in HEV [8]. The PM volume of the proposed machine is reduced to 1.0 kg, while the target maximum torque and power is 333 Nm and 123 kW, respectively.…”

Section: Design Restrictions and Specificationsmentioning

confidence: 99%

Electromagnetic flux analysis on a new outer-rotor hybrid excitation flux switching machine

Ahmad

Sulaiman

Khan

et al. 2014

2014 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE)

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Preliminary studies on a new outer-rotor permanent magnet flux switching machine with hybrid excitation flux for direct drive EV applications

Cited by 34 publications

References 13 publications

Performance Analysis of 12Slot with Various Rotor Pole Numbers HE-FSM for HEV Application

Performance Analysis of 12Slot with Various Rotor Pole Numbers HE-FSM for HEV Application

High Torque Flux Switching Permanent Magnet Machine in Segmented Outer Rotor using Appropriate Split Ratio for Electric Scooter Propulsion

Electromagnetic flux analysis on a new outer-rotor hybrid excitation flux switching machine

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