Abstract
In comparison with three-phase induction machines, modern single-phase induction machines normally have skewed rotors, but show an elliptic magnetic field during start-up. In order to properly model the start-up of such a machine, this three-dimensional (3-D) characteristic has to be accounted for. This leads to the application of the 3-D finite-element method. This paper will introduce a new approach to model and analyze the start-up of such a single-phase machine, with the aim of higher computational efficiency. Furthermore, this paper will discuss how symmetries, both in the circumferential direction and along the motor shaft, can be exploited despite the skewing. This is achieved through transforming (rotating) the cutting plane, doubling the skewing angle, and increasing the rotor conductor conductivity. The analysis is carried out on a small two-pole 100-W machine used for household appliances. The theoretical results are compared with experimental results for six rotors; each with a different skewing angle.
Original language | English |
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Article number | 6894206 |
Pages (from-to) | 142-149 |
Number of pages | 8 |
Journal | IEEE Transactions on Energy Conversion |
Volume | 30 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- Electromagnetic fields
- electromagnetic forces
- finite-element method (FEM)
- induction machines
- single-phase machines
- squirrel-cage machines
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Fields of Expertise
- Sustainable Systems
Treatment code (Nähere Zuordnung)
- Application