Optimization of outer-rotor hybrid excitation FSM for in-wheel direct drive electric vehicle
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 incongr...
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| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Published: |
2015
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8469/ http://eprints.uthm.edu.my/8469/1/P71_cc34f525aeae90a64e907b8509aad797.pdf |
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| Summary: | 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. |
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