Design of outer rotor field excitation flux switching motor for direct-drive application
This thesis contributes to a better understanding of the design and analysis of a 12S- 14P three phase Outer Rotor Field Excitation Flux Switching Motor (OR-FEFSM) for direct-drive applications in Electric Vehicles (EV). Research work on the 12S-14P inner-rotor FEFSM carried out by others have repor...
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| Format: | Thesis |
| Published: |
2016
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8840/ http://eprints.uthm.edu.my/8840/1/SYED_MUHAMMAD_NAUFAL_BIN_SYED_othman.pdf |
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| Summary: | This thesis contributes to a better understanding of the design and analysis of a 12S-
14P three phase Outer Rotor Field Excitation Flux Switching Motor (OR-FEFSM) for
direct-drive applications in Electric Vehicles (EV). Research work on the 12S-14P
inner-rotor FEFSM carried out by others have reported a maximum torque figure of
226.12Nm and a power output of 127.61kW. The research work carried out in this
thesis focuses on the design and analysis a class of 12S-nP three-phase Outer Rotor
Field Excitation Flux Switching Motor (OR-FEFSM) configurations, where n is the
number of poles of the motor. In particular, a total of five rotor pole configuration
namely the 12S-10P, 12S-14P, 12S-16P, 12S-20P and 12S-22P configuration were
investigated. Performance analysis of the torque and power versus speed
characteristics were carried out using the Finite Element Analysis (FEA) software
developed by JMAG Designer, version 13.0 which is able to calculate torque and
power figures to six decimal places of accuracy. The optimum structure for ORFEFSM
was identified by conducting an extensive search in 2-D parameter space with
constant diameter and stack length using the Deterministic Optimisation Method
(DOM), which gives optimum output torque and power figures upon convergence. The
simulation results obtained showed that 12S-14P was the optimal rotor pole
configuration where a torque figure of 221.38 Nm and 186kW power output was
obtained, which is 5.41% greater than the targeted performance specifications. The
simulation results also showed that the 12S-14P rotor configuration can reach an
efficiency figure as high as 73.33% in normal driving conditions. |
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