Wound field synchronous machine control device
US6984959B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2005 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Jan 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A synchronous machine control device includes a flux command generator, a magnetic flux estimator, a divider, a flux controller and γ- and δ-axis armature current controllers. The flux command generator produces a flux command from the synchronous machine turning speed. The magnetic flux estimator calculates the magnitude and phase of armature flux linkage from armature currents and field current taking into consideration magnetic fluxes produced by permanent magnets. The divider produces an armature current command by dividing a torque command by the armature flux linkage. The flux controller determines a field current command based on an error of the magnitude of the armature flux linkage from the flux command. The γ- and δ-axis armature current controllers control the synchronous machine such that both an error of an armature current in a direction perpendicular to the armature flux linkage direction from the armature current command and an armature current in the armature flux linkage direction become zeros.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.