Design study of single phaseinner-rotor hybrid excitation flux switching motor for hybrid electric vehicles
In hybrid excitation machines (HEMs), there are two main flux sources which are permanent magnet (PM) and field excitation coil (FEC). These HEMs have better features when compared with interior permanent magnet synchronous machines (IPMSM) used in conventional hybrid electric vehicles (HEVs). Since...
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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/5564/ http://eprints.uthm.edu.my/5564/1/Design_Study_of_Single_PhaseInner%2DRotor.pdf |
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| Summary: | In hybrid excitation machines (HEMs), there are two
main flux sources which are permanent magnet (PM) and field
excitation coil (FEC). These HEMs have better features when
compared with interior permanent magnet synchronous
machines (IPMSM) used in conventional hybrid electric vehicles
(HEVs). Since all flux sources including PM, FEC and armature
coils are located on stator core, the rotor becomes a single piece
structure similar with switch reluctance machine (SRM). The
combined flux generated by PM and FEC established more
excitation fluxes that are required to produce much higher
torque of the motor. In addition, variable DC FEC can control
the flux capabilities of the motor, thus the machine can be
applied for high-speed motor drive system.In this paper, the
initial design of single-phase 8S-4P inner-rotor HEFSM is
presented. Initiallycoil arrangement tests are examined to
confirm the machine operating principle and position of each
armature coil phase. Finally, flux comparison of PM, DC FEC
and PM with DC FEC, flux linkage at various FEC current
densities, JE, flux distribution and flux line of PM with FEC,
cogging torque, induced voltage/ back EMF of PM, DC FEC and
PM with DC FEC, combination of FEC and armature coil flux
characteristic and torque and power versus FEC current density,
JE at various armature coil current densities, JA are also
analyzed. As a result, the performance of the initial design motor
shows that the maximum torque achieved is 81.6% of the target
performance, whereas the maximum power achieved 47.4 kW,
15.6% is greater than the target value. Thus, by further design
refinement and optimization it is expected that the motor will
successfully achieve the target performances. |
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