Patent · US Active

Method and device for controlling a synchronous machine without a position sensor by means of unique assignment of the flux linkage to the rotor position

US11722082B2 · kind B2 · utility

0Cited by

7References

20Claims

0Family size

Assignee

KOSTAL Drives Technology GmbH · DE

Inventors

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

Key dates

Filing date	May 18, 2022
Grant date	Aug 8, 2023
Priority date	—
Expiry date	May 18, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2203/05
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method is for use with a synchronous machine having a stator and a rotor with or without permanent magnets. In operation, electric current of the synchronous machine responsive to the synchronous machine being actuated via clocked terminal voltages is measured. A magnetic flux linkage is determined based on the clocked terminal voltages and the measured electric current. A profile of the magnetic flux linkage as a function of rotation of the rotor, under a boundary condition of an at least two-dimensional electric current vector that is unchanged in coordinates of the stator, is used to detect a position of the rotor. The synchronous machine is controlled according to the rotor position.

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