EP 2032996 A2 20090311 - METHOD FOR INSTANTANEOUSLY DETERMINING RATES OF DISTORTION OF SIGNALS ON AN AC ELECTRICAL NETWORK, AND ASSOCIATED DEVICE
Title (en)
METHOD FOR INSTANTANEOUSLY DETERMINING RATES OF DISTORTION OF SIGNALS ON AN AC ELECTRICAL NETWORK, AND ASSOCIATED DEVICE
Title (de)
VERFAHREN ZUR UNMITTELBAREN BESTIMMUNG VON SIGNALVERZERRUNGSRATEN IN EINEN WECHSELSTROMNETZ UND ENTSPRECHENDE VORRICHTUNG
Title (fr)
PROCEDE DE DETERMINATION INSTANTANEE DE TAUX DE DISTORSION DE SIGNAUX SUR UN RESEAU ELECTRIQUE ALTERNATIF, ET DISPOSITIF ASSOCIE
Publication
Application
Priority
- FR 2007051427 W 20070612
- FR 0652708 A 20060629
Abstract (en)
[origin: WO2008000990A2] Method for instantaneously determining rates of distortion of signals on an ac electrical network, and associated device. The present invention addresses the need for real-time calculation of an instantaneous value of discrete harmonic rate, adapted in particular for an electrical network producing a variable-frequency signal. In a general manner, the invention proposes a method for instantaneously determining rates of distortion on variable-frequency signals, and an associated device, in which a rate of harmonic distortion is calculated over a time window that is as short as possible, corresponding to the duration of a period of the fundamental of a relevant signal. Advantageously, one seeks to precisely determine the value of the frequency of the signal whose DHT is to be calculated, and an iteration is carried out for certain measurements made during a given calculation for the calculation of the DHT on subsequent signals.
IPC 8 full level
G01R 23/20 (2006.01)
CPC (source: EP US)
G01R 23/20 (2013.01 - EP US)
Citation (search report)
See references of WO 2008000990A2
Citation (examination)
- DE 4134472 A1 19930422 - ROHDE & SCHWARZ [DE]
- US 4918381 A 19900417 - BENDER MARTIN A [US], et al
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
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008000990 A2 20080103; WO 2008000990 A3 20080410; BR PI0713799 A2 20121106; CA 2655740 A1 20080103; CA 2655740 C 20161122; CN 101479613 A 20090708; CN 101479613 B 20111228; EP 2032996 A2 20090311; FR 2903190 A1 20080104; FR 2903190 B1 20080822; JP 2009541766 A 20091126; JP 5237939 B2 20130717; RU 2009101477 A 20100727; RU 2406094 C2 20101210; US 2010052699 A1 20100304; US 8717040 B2 20140506
DOCDB simple family (application)
FR 2007051427 W 20070612; BR PI0713799 A 20070612; CA 2655740 A 20070612; CN 200780024240 A 20070612; EP 07788993 A 20070612; FR 0652708 A 20060629; JP 2009517344 A 20070612; RU 2009101477 A 20070612; US 30450307 A 20070612