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1. (WO2010079235) LOAD DEPENDENT CONVERTER SWITCHING FREQUENCY
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/079235 International Application No.: PCT/EP2010/050283
Publication Date: 15.07.2010 International Filing Date: 12.01.2010
IPC:
H02J 3/38 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
J
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3
Circuit arrangements for ac mains or ac distribution networks
38
Arrangements for parallelly feeding a single network by two or more generators, converters, or transformers
Applicants:
VESTAS WIND SYSTEMS A/S [DK/DK]; Alsvej 21 DK-8940 Randers SV, DK (AllExceptUS)
HJORT, Thomas [DK/DK]; DK (UsOnly)
Inventors:
HJORT, Thomas; DK
Agent:
MADSEN, Steen; Inspicos A/S P.O. Box 45 Kogle Allé 2 DK-2970 Hørsholm, DK
Priority Data:
61/144,00012.01.2009US
PA 2009 0004012.01.2009DK
Title (EN) LOAD DEPENDENT CONVERTER SWITCHING FREQUENCY
(FR) FRÉQUENCE DE COMMUTATION D'UN CONVERTISSEUR FONCTION DE LA CHARGE
Abstract:
(EN) The present invention relates to a method for providing fast and effective active power support, such as inertial support, the method comprising the steps of determining a fundamental frequency of the power supply grid, changing a switching frequency of a DC/AC converter in case the determined fundamental frequency falls outside a predetermined frequency dead-band of the power supply grid, and changing an amount of active power injected into the power supply grid in accordance with the changed switching frequency in order to bring the fundamental frequency within the frequency dead-band of the power supply grid.
(FR) La présente invention concerne un procédé permettant de fournir un support de puissance active rapide et efficace, par exemple un support inertiel. Le procédé comprend les étapes qui consistent à déterminer une fréquence fondamentale de la grille d'alimentation électrique, à modifier la fréquence de commutation d'un convertisseur CC/CA si la fréquence fondamentale déterminée sort d'une zone morte de fréquence prédéterminée de la grille d'alimentation électrique, et à modifier la quantité de puissance active injectée dans la grille d'alimentation électrique en fonction de la fréquence de commutation modifiée, de manière à amener la fréquence fondamentale à l'intérieur de la zone morte de fréquence de la grille d'alimentation électrique.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)