Design investigation of hybrid excitation flux switching machine for high-speed electric vehicles
Permanent magnet (PM) and field excitation coil (FEC) in hybrid excitation machine (HEMs) act as a main flux sources which has numerous attractive features compared to interior permanent magnet synchronous machines (IPMSM) usually employed in hybrid electric vehicles (HEVs). The advantage of both pe...
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| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Published: |
2014
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/5562/ http://eprints.uthm.edu.my/5562/1/Design_Investigation_of_Hybrid_Excitation.pdf |
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| Summary: | Permanent magnet (PM) and field excitation coil
(FEC) in hybrid excitation machine (HEMs) act as a main flux
sources which has numerous attractive features compared to
interior permanent magnet synchronous machines (IPMSM)
usually employed in hybrid electric vehicles (HEVs). The
advantage of both permanent magnet and field excitation coil
located on the stator is robust rotor structure alike with switch
reluctance machine (SRM). Furthermore, this machine becoming
more attractive because of variable flux control capabilities from
FEC, which is appropriate to be applied for high-speed motor
drive systems. This HEM can be categorized as hybrid excitation
flux switching machine (HEFSM). In this paper, a novel 12Slot-
10Pole HEFSM in which the FEC is wounded in radial direction
on the stator is proposed for traction drives in HEVs. The design
target of maximum torque and power are 303Nm and 123kW,
respectively. Moreover, maximum power density of more than
3.5kW/kg is to be achieved, resulting that proposed motor have
better power density compared to existing IPMSM. Deterministic
design optimization technique based on 2D-FEA is used to treat
design parameters defined in rotor, armature coil slot and FEC
slot until the target performances are achieved, under maximum
current density condition for both armature coil and FEC. The
final results prove that the final design HEFSM is able to keep
the equivalent torque density in existing IPMSM installed on
commercial HEV. |
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