Motor control apparatus
US8269441B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2010 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Feb 17, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor control apparatus includes a current control unit which is configured to calculate dq-axis voltage commands to match d-axis and q-axis current commands with d-axis and q-axis currents of a motor current, respectively. A power conversion circuit is configured to drive the motor. A modulation factor command unit is configured to determine a modulation factor command. A modulation wave command unit is configured to determine modulation wave commands. A pulse width modulation generating unit is configured to generate a pulse width modulation pattern. A modulation factor saturation level calculating unit is configured to determine a modulation factor saturation level. A field-weakening control unit is configured to correct the d-axis current command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.