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1. (WO2019007542) A UPS SYSTEM OPERATING IN THE ECONOMICAL MODE
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Pub. No.: WO/2019/007542 International Application No.: PCT/EP2018/000324
Publication Date: 10.01.2019 International Filing Date: 26.06.2018
IPC:
H02M 1/12 (2006.01) ,H02M 1/15 (2006.01) ,H02J 3/18 (2006.01) ,H02J 9/04 (2006.01) ,H02J 9/06 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1
Details of apparatus for conversion
12
Arrangements for reducing harmonics from ac input or output
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1
Details of apparatus for conversion
14
Arrangements for reducing ripples from dc input or output
15
using active elements
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
18
Arrangements for adjusting, eliminating, or compensating reactive power in networks
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
9
Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
04
in which the distribution system is disconnected from the normal source and connected to a standby source
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
9
Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
04
in which the distribution system is disconnected from the normal source and connected to a standby source
06
with automatic change-over
Applicants:
ABB SCHWEIZ AG [CH/CH]; Brown Boveri Strasse 6 5400 Baden, CH
Inventors:
RUSZCZYK, Adam; PL
KOSKA, Krzysztof; PL
Agent:
CHOCHOROWSKA-WINIARSKA, Krystyna; ABB Corporate Research 13A Starowislna Str. 31-038 Krakow, PL
Priority Data:
17460041.106.07.2017EP
Title (EN) A UPS SYSTEM OPERATING IN THE ECONOMICAL MODE
(FR) SYSTÈME D'ALIMENTATION SANS COUPURE FONCTIONNANT EN MODE ÉCONOMIQUE
Abstract:
(EN) The present invention relates to a UPS (Uninterruptible Power Supply) system (1) operating in an economical mode (ECO-mode) for reduction of a capacitive current in an AC bypass circuit (8). The UPS system, according to the invention, is characterized in that the DC/AC converter circuit (5) is equipped with an AC output filter (11) in which the LC circuit is formed by at least two capacitors or banks of capacitors C1 and C2 connected in series having a different values of capacitances. One of these capacitors C1 or C2 is bypassed by a bidirectional switch (12) connected in parallel to the capacitors or bank of capacitors which has lower value of the capacitance. When the bidirectional switch (12) is closed and the AC bypass switch circuit (8) is open then the UPS system is enable for working in a double-conversion operating mode for which the AC/DC converter circuit (4) and the DC/AC converter circuit (5) are operated with nominal LC filter (11) parameters. When the bidirectional switch (12) is open and the AC bypass switch circuit (8) is closed then the UPS system is enable for working in an ECO-mode operation for which the DC/AC converter circuit (5) is not operating and parameters of LC filter (11) are modified by bidirectional switch (12) to reduce capacitive current.
(FR) La présente invention concerne un système UPS (alimentation sans coupure) (1) fonctionnant en mode économique (mode ECO) pour réduire un courant capacitif dans un circuit de dérivation de CA (8). Le système UPS, selon l'invention, est caractérisé en ce que le circuit convertisseur CC/CA (5) est équipé d'un filtre de sortie de CA (11) dans lequel le circuit LC est formé par au moins deux condensateurs ou bancs de condensateurs C1 et C2 connectés en série ayant des valeurs de capacités différentes. L'un de ces condensateurs C1 ou C2 fait l'objet d'une dérivation par un commutateur bidirectionnel (12) connecté en parallèle aux condensateurs ou bancs de condensateurs dont la valeur de la capacité est inférieure. Lors de la fermeture du commutateur bidirectionnel (12) et de l'ouverture du circuit de commutation de dérivation de CA (8), le système UPS peut fonctionner en mode de fonctionnement à double conversion dans lequel le circuit convertisseur CA/CC (4) et le circuit convertisseur CC/CA (5) sont mis en œuvre avec des paramètres nominaux de filtre LC (11). Lors de l'ouverture du commutateur bidirectionnel (12) et de la fermeture du circuit de commutation de dérivation de CA (8), le système UPS peut fonctionner en mode de fonctionnement ECO dans lequel le circuit convertisseur CC/CA (5) ne fonctionne pas et les paramètres du filtre LC (11) sont modifiés par un commutateur bidirectionnel (12) de façon à réduire le courant capacitif.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 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, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, 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, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)