Patent · US Active

Offset angle determination for synchronous machines

US9190948B2 · kind B2 · utility

2Cited by

6References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Stefan Blind · Fellbach, DE
Daniel Raichle · Lambach, DE

Key dates

Filing date	Apr 16, 2009
Grant date	Nov 17, 2015
Priority date	—
Expiry date	Sep 28, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02P25/024
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for determining an offset angle of an electric machine, including a stator, a rotor, and a shaft connected to the rotor is described. The shaft is provided in a (generally) no-load state, and the rotor is positioned with respect to the stator at a field angle. A sensor angle is determined by measuring with the aid of an angle sensor. The offset angle is provided as a function of the difference between the field angle and the sensor angle, and the configuration of the rotor includes impressing a standing or rotating stator magnetic field which corresponds to the field angle. An angle detection device for carrying out the method is also described.

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