Patent · US Active

Control device and method for determining the rotor angle of a synchronous machine

US9214882B2 · kind B2 · utility

1Cited by

0References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Armin Niederer · Karlsruhe, DE
Gerhard Knecht · Iffezheim, DE
Sebastian Paulus · Esslingen am Neckar, DE
Michael Koerner · Laufenburg (Baden), DE

Key dates

Filing date	Dec 4, 2013
Grant date	Dec 15, 2015
Priority date	—
Expiry date	Mar 13, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH02P6/187
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Determining the rotor angle of a synchronous machine. In one aspect, the invention provides a method that includes generating a multiplicity of pulse-width-modulated drive signals for the phases of an inverter feeding the synchronous machine depending on a voltage to be fed into the synchronous machine, and applying a first phase shift to one or more of the multiplicity of pulse-width-modulated drive signals, so that the duration of the switching states of the inverter is extended in order to generate a first switching pattern for the phases of the inverter. The method also includes applying a second phase shift to one or more of the multiplicity of pulse-width-modulated drive signals for generating a second switching pattern, selecting one or more of the first and second switching patterns, determining one or more of neutral point potentials at the neutral point of the synchronous machine, and calculating the rotor angle of the synchronous machine.

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