Motor control device
US8975841B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2013 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Oct 3, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/0089
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor control device includes a torque computing section which computes an output torque of an electric motor which is capable of generating magnetic torque by permanent magnets and reluctance torque, a flux weakening angle computing section which determines an angle of a flux weakening current vector that is added to a reference current vector so that a command torque value and the computed torque value correspond with each other, a voltage acquiring section which acquires a terminal voltage of the motor, a flux weakening amplitude computing section which determines an amplitude of the flux weakening current vector so that the terminal voltage of the motor is not more than a maximum voltage applicable to the motor, and a command current computing section which computes a command current vector by adding the flux weakening current vector to the reference current vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.