Synchronous machine control device and permanent magnet temperature estimation method for synchronous machine
US10418929B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2016 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Jan 21, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are: a synchronous machine having permanent magnets as a field system; a stress estimator that estimates stress acting on the permanent magnets; and a first magnet temperature corrector that calculates an amount of demagnetization due to stress of armature interlinkage magnetic flux on the basis of the estimated stress, estimates an amount of demagnetization due to stress of the armature interlinkage magnetic flux on the basis of the rotor position of the synchronous machine, a current command and a voltage command, and the amount of demagnetization due to stress of the armature interlinkage magnetic flux; and outputs a permanent magnet temperature estimated value after correction, having factored therein the amount of demagnetization due to stress of the armature interlinkage magnetic flux from the estimated armature interlinkage magnetic flux.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.