Patent · US Active

Inverter system for operating an electric motor

US8779707B2 · kind B2 · utility

0Cited by

5References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Albrecht Schwarz · Gerlingen, DE
Martin Trunk · Hollenstede, DE
Daniel Raichle · Lambach, DE

Key dates

Filing date	Oct 15, 2010
Grant date	Jul 15, 2014
Priority date	—
Expiry date	May 17, 2031

Classification

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

Abstract

An inverter system for operating an electric motor includes an input port for providing an electrical voltage, a bridge inverter circuit connected downstream from the input port for generating an electrical alternating voltage for the electric motor based on the electrical voltage. The bridge inverter circuit has at least one half-bridge branch including switching elements configured to be open for transferring the electric motor into a freewheeling state, and a decoupling switching element designed for decoupling the at least one half-bridge branch in the freewheeling state of the electric motor from the input port, in order to suppress a reaction of the freewheeling electric motor on the input port.

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