Patent · US Active

Circuit and method for de-energizing a field coil

US8749206B2 · kind B2 · utility

1Cited by

13References

25Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Benno Koeppl · Markt Indersdorf, DE
Michael Scheffer · Munich, DE
Frank Auer · Herbrechtingen, DE

Key dates

Filing date	Jul 10, 2013
Grant date	Jun 10, 2014
Priority date	—
Expiry date	Jul 10, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH02P9/102
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A circuit includes a first half bridge including a first controllable semiconductor switch and a first diode. The first controllable semiconductor switch is coupled between a first constant supply potential and a center tap of the first half bridge. The first diode is coupled between the center tap and a constant reference potential. A second half bridge includes a second diode and a second controllable semiconductor switch. The second diode is coupled between a second constant potential higher than the first potential and a center tap of the second half bridge. The second controllable semiconductor switch is coupled between the center tap and the constant reference potential. Driver circuitry controls the conducting state of the first and the second semiconductor switch thus controlling the current flow through a field connectable between the center taps.

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