Patent · US Active

Method and device for controlling a synchronous machine without a position sensor by means of one-to-one assignment of the admittance or inductance to the rotor position

US11456687B2 · kind B2 · utility

1Cited by

6References

18Claims

0Family size

Assignee

KOSTAL Drives Technology GmbH · DE

Inventors

Peter Landsmann · Munich, DE
Dirk Paulus · Munich, DE
Sascha Kuehl · Munich, DE

Key dates

Filing date	Feb 17, 2021
Grant date	Sep 27, 2022
Priority date	—
Expiry date	Jun 18, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2207/05
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and a device for assigning the inductance or admittance to the rotor position of a synchronous machine having a stator and a rotor with or without permanent magnets. In operation, the synchronous machine is activated by way of timed terminal voltages and the inductance or admittance is calculated from the terminal voltages and the measured current response. In this case, the variation of the inductance or admittance over the rotor rotation under the boundary condition of an at least two-dimensional current vector that is unchanged in stator coordinates, is used as key information for the positional assignment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.