Method and device for controlling the operation of an electric motor
US10243496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2015 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Oct 3, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method controls the operation of an electric motor. Wherein electrical voltages applied to electrical phases of the electric motor are produced and output in a controlled manner in a modulation on the basis of a rotor position of the electric motor, on the basis of a set point/actual comparison, which is performed in a control loop with a speed controller, for a speed of the electric motor and on the basis of a set point/actual comparison. A set point value at the input of the current regulator is formed by multiplying a present duty factor for the modulation by a first manipulated variable applied to the output of the speed controller. The first manipulated variable of the speed controller becomes an equivalent phase current root mean square value for the electric motor in the underlying current regulator by the multiplication by the present duty factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.