EP 2102670 A1 20090923 - METHOD AND DEVICE FOR DETECTING THE FAILURE OF AN EXCITATION CIRCUIT OF A POLYPHASE ALTERNATOR
Title (en)
METHOD AND DEVICE FOR DETECTING THE FAILURE OF AN EXCITATION CIRCUIT OF A POLYPHASE ALTERNATOR
Title (de)
VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG EINES DEFEKTES BEI EINER ERREGERSCHALTUNG EINES MEHRPHASENGENERATORS
Title (fr)
PROCEDE ET DISPOSITIF DE DETECTION DE LA DEFAILLANCE DU CIRCUIT D'EXCITATION D'UN ALTERNATEUR POLYPHASE
Publication
Application
Priority
- FR 2007052403 W 20071127
- FR 0655667 A 20061220
Abstract (en)
[origin: WO2008074952A1] The method of detecting the failure of the excitation circuit of a polyphase alternator controlled by a regulator comprises the following steps: a) electrical information (Iexc) is continuously taken from the excitation circuit (1); b) the electrical information taken in step a) is continuously compared with a predetermined threshold value (Iref); c) a logic state (LT) is continuously determined according to the result of the comparison made in step b); and d) if the logic state (LT) determined in step c) persists for a time at least equal to a predetermined delay time (6), an electrical continuity fault of said excitation circuit is signalled. This method is particularly suitable for machines having a rotor equipped with permanent magnets or having a high remanence of the magnetic circuit of the rotor.
IPC 8 full level
G01R 31/06 (2006.01); G01R 31/02 (2006.01); G01R 31/34 (2006.01); H02J 7/14 (2006.01); H02P 9/30 (2006.01)
CPC (source: EP US)
G01R 31/343 (2013.01 - EP US); G01R 31/346 (2013.01 - EP US); H02P 9/305 (2013.01 - EP US); G01R 31/54 (2020.01 - EP US)
Citation (search report)
See references of WO 2008074952A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2910639 A1 20080627; FR 2910639 B1 20090417; EP 2102670 A1 20090923; US 2012161810 A1 20120628; US 8618829 B2 20131231; WO 2008074952 A1 20080626
DOCDB simple family (application)
FR 0655667 A 20061220; EP 07858741 A 20071127; FR 2007052403 W 20071127; US 51566607 A 20071127