Patent · US Active

Operating state circuit for inverter and method for setting operating states of an inverter

US9673744B2 · kind B2 · utility

8Cited by

4References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Edwin Eberlein · Stuttgart, DE
Andreas Schoenknecht · Renningen, DE
Daniel Raichle · Lambach, DE

Key dates

Filing date	Jun 12, 2012
Grant date	Jun 6, 2017
Priority date	—
Expiry date	Jun 12, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/64
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to an operating state circuit for actuating an inverter (3), which supplies an n-phase electrical machine (5) with an n-phase supply voltage via phase connections (4a, 4b, 4c), wherein n≧1, comprising an evaluation device (6) which is connected to the phase connections (4a, 4b, 4c) of the inverter (3) and which is configured to detect output voltages of the inverter (3) to the phase connections (4a, 4b, 4c) and to determine a speed of the electrical machine (5) on the basis of the detected output voltages, and an actuating device (7) which is coupled to the evaluation device (6) and which is configured to switch to an idle state or an active short-circuit in dependence on the determined speed of the inverter (3).

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