Title:
CIRCUIT ASSEMBLY FOR OVERVOLTAGE LIMITING OF AN EXCITATION COIL OF A SYNCHRONOUS MACHINE HAVING FAST DE-EXCITATION
Document Type and Number:
WIPO Patent Application WO/2011/095375
Kind Code:
A3
Abstract:
The invention relates to a circuit assembly for de-excitation of an excitation coil (E) of a synchronous machine in case of an error having a control circuit (1) for controlling a current flow through the excitation coil (E), wherein a positive control voltage can be applied to the excitation coil (E) for excitation and a negative control voltage can be applied for fast de-excitation, and a protection circuit (10) connected in parallel to the excitation coil (E) which allows no current flow via the protection circuit (10) in the case of fast de-excitation and in case of interruption of at least one connection line between the control circuit (1) and the excitation coil (E) forms a current path for voltage limiting and de-excitation of the excitation coil (E).
Inventors:
SPANNHAKE STEFAN (DE)
FASSNACHT JOCHEN (DE)
MUELLER HANS-PETER (DE)
FASSNACHT JOCHEN (DE)
MUELLER HANS-PETER (DE)
Application Number:
PCT/EP2011/050306
Publication Date:
January 26, 2012
Filing Date:
January 12, 2011
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
SPANNHAKE STEFAN (DE)
FASSNACHT JOCHEN (DE)
MUELLER HANS-PETER (DE)
SPANNHAKE STEFAN (DE)
FASSNACHT JOCHEN (DE)
MUELLER HANS-PETER (DE)
International Classes:
H02P9/04; H02H7/06; H02H7/08; H02H9/04; H02P9/10
Foreign References:
| US6850043B1 | 2005-02-01 | |||
| CN85201172U | 1986-06-25 | |||
| US4118749A | 1978-10-03 |
Attorney, Agent or Firm:
ROBERT BOSCH GMBH (Stuttgart, DE)
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