Abstract
In this paper, electromagnetic performances of twelve-phase 24-stator-slot redundant switched flux permanent magnet (SFPM) machines with 20-, 22-, 26- and 28-rotor-pole rotors are analyzed. The influences of key design parameters on the open-circuit electro-motive-force (EMF) and cogging torque are comparatively evaluated by 2D finite-element analysis (FEA). FEA results show that the 24/26 SFPM machine exhibits the highest electromagnetic torque and efficiency than the other three, whilst the 24/22 one has the smallest cogging torque and torque ripple as well as relatively good power factor, voltage regulation and efficiency which are essential for a wind generator. Furthermore, the investigation on redundancy shows that cross-coupling among the four sets of three-phase balanced windings and the saturation effect can be neglected when the generator operates with light loads. Lastly, the prototyped twelve-phase 24/22 SFPM machine is measured to validate the simulations.
Original language | English |
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Title of host publication | Proceedings - 2016 22nd International Conference on Electrical Machines, ICEM 2016 |
Publisher | IEEE |
Pages | 2438-2444 |
Number of pages | 7 |
ISBN (Electronic) | 9781509025381 |
DOIs | |
Publication status | Published - 2 Nov 2016 |
Event | 22nd International Conference on Electrical Machines, ICEM 2016 - Lausanne, Switzerland Duration: 4 Sept 2016 → 7 Sept 2016 |
Conference
Conference | 22nd International Conference on Electrical Machines, ICEM 2016 |
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Country/Territory | Switzerland |
City | Lausanne |
Period | 4/09/16 → 7/09/16 |
Keywords
- permanent magnet
- redundancy
- stator-slot/rotor-pole
- Switched flux
- twelve-phase
- wind power generation
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Mechanical Engineering