Patent · US Active

Inverter arrangement, electric drive system, and method for discharging a DC link capacitor in an inverter arrangement

US11011974B2 · kind B2 · utility

0Cited by

0References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Edwin Eberlein · Stuttgart, DE
Martin Trunk · Hollenstede, DE
Timo Bartsch · Heimsheim, DE

Key dates

Filing date	Mar 23, 2017
Grant date	May 18, 2021
Priority date	—
Expiry date	Apr 3, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/322
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to the discharging of a DC link capacitor in an inverter arrangement, thereby allowing, for example, a DC link capacitor to be discharged while an electric machine that is connected to the inverters can operate in an idling mode as a safe mode. The DC link capacitor is discharged by very briefly triggering a semiconductor switch within the inverter. According to the invention, the inverter bridge arm with the smallest phase voltage is selected for the very brief triggering process.

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