New structure of dual stator hybrid excitation flux switching motor for aircraft applications
Aircraft applications demand high reliability, high torque and power densities while aiming to reduce weight, complexity, fuel consumption, costs, and environmental impact. New electric driven system such as flux switching machine (FSM) has been developed which is capable to meet these requiremen...
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English English English |
| Published: |
2021
|
| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/1787/2/HASSAN%20ALI%20SOOMRO%20-%20declaration.pdf http://eprints.uthm.edu.my/1787/1/HASSAN%20ALI%20SOOMRO%20-%2024p.pdf http://eprints.uthm.edu.my/1787/3/HASSAN%20ALI%20SOOMRO%20-%20fulltext.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Aircraft applications demand high reliability, high torque and power densities while
aiming to reduce weight, complexity, fuel consumption, costs, and environmental
impact. New electric driven system such as flux switching machine (FSM) has been
developed which is capable to meet these requirements as well as providing significant
technical and economic improvements over conventional systems. However, FSMs
with single stator associated with limited free space for active sources in stator, which
leads to some drawbacks of complicated structure, less paths for flux flow, flux
cancellations, and heat generation effects. To overcome these issues, FSMs using
double stator (DS) have been proposed by many researchers which provide more free
space for active sources and flux to flow. Whereas, these structures show some
drawbacks of flux cancelations are saturations due to the arrangement of excitation
sources in both stators. Therefore, this research presents design studies of new DS
hybrid excitation FSM (DS HEFSMs) having permanent magnets (PMs) in inner stator
while field excitation coil (FEC) and armature coils in outer stator so that coils can be
easily inserted or replaced during fault conditions. Moreover, the performance analysis
of proposed design is investigated and compared with existing DS designs based on
2D finite element analysis (FEA) using JMAG software ver. 16.0 In addition to obtain
the optimum torque and power, proposed DS HEFSM is optimized by treating several
design parameters defined in the rotor segments, armature slot, and FEC slot using
deterministic optimization approach. Accordingly, the optimized design shows the
capabilities to achieved 19.6% better flux linkage compared to initial design along with
38.67%, 30.58% and 2.91% increment in torque density, power density and in
efficiency respectively. While, the torque and power achieved by final design are 17%
and 58% more than existing PM synchronous motor (PMSM) respectively used for
aircraft propeller applications. Finally, in this research it is concluded that the proposed
DS HEFSM has shown the promising capabilities to achieve higher torque densities at
maximum speed ranges and can be installed in various single seated aircrafts to fly at
various altitudes. |
|---|