Method and device for controlling an operation of an electric motor
US10439523B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2015 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | May 28, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/0089
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a method for controlling an operation of an electric motor, electric voltages applied to electric phases of the electric motor are generated and output in a modulation in a controlled manner dependent on a rotor position of the electric motor and a target/actual comparison of at least one first variable which characterizes a load on the electric motor or an actual rotational speed of the electric motor. A rotor position angle, which characterizes the rotor position, is complemented with a specified preliminary control angle and another regulated preliminary control angle component upon reaching a field weakening range of the electric motor so as to form a sum angle. The sum angle is used to characterize the rotor position in the modulation upon reaching the field weakening range. The disclosure also relates to a device for controlling an operation of an electric motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.