Patent · US Active

Control device for an electric motor, vehicle and method

US9837947B2 · kind B2 · utility

0Cited by

4References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Wiecha · Asperg, DE
Michele Hirsch · Eßlingen, DE
Marcel Maur · Gerlingen, DE

Key dates

Filing date	Mar 5, 2015
Grant date	Dec 5, 2017
Priority date	—
Expiry date	Mar 5, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/70
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Embodiments relate to a control device for an electric motor having at least one phase. The control device includes a power unit having a first switching element and a first flyback element corresponding to the first switching element and a second switching element and a second flyback element corresponding to the second switching element. The first switching element is designed to couple a corresponding power connection of the motor with a positive supply voltage. The second switching element is designed to couple the corresponding power connection of the motor with a negative supply voltage; and a control unit designed to separately detect a first current flowing through the first switching element or second switching element corresponding to the phase, to detect a second current flowing through the flyback element corresponding to the respective second switching element or first switching element, and to control the switching elements of the power unit.

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