Abstract
This paper presents the results of experimental tests designed to verify analytical predictions of the rotor demagnetization characteristics of a 0.6 kW (cont.) 9-slot/6-pole fractional-slot concentrated winding (FSCW) interior permanent magnet (IPM) synchronous machine. The demagnetization characteristics of the rotor magnets in this commercially produced FSCW-IPM machine are measured using a test configuration that is designed to conduct multiple demagnetization tests on the same test machine under controlled temperature conditions. In this paper, finite-element (FE) predictions of the rotor demagnetization characteristics of the experimental machine during three-phase symmetrical short-circuit and single-phase asymmetrical short-circuit faults are presented. These results are compared with experimental test measurements of the postfault currents and the magnet flux density distribution following demagnetization, demonstrating very good agreement of many key features. These comparisons also confirm that 3-D effects and magnet material properties such as the magnet thermal coefficients have a significant impact on some details of the FE predictions of the machine's fault-mode response characteristics.
| Original language | English |
|---|---|
| Article number | 7885545 |
| Pages (from-to) | 3467-3475 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Industry Applications |
| Volume | 53 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1 Jul 2017 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2017 IEEE.
Keywords
- Concentrated windings
- demagnetization
- interior permanent magnet
- permanent magnet
- single-phase asymmetrical short-circuit fault
- three-phase symmetrical short-circuit fault