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1. (WO2019024907) AUXILIARY POWER SUPPLY APPARATUS AND METHOD
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Pub. No.: WO/2019/024907 International Application No.: PCT/CN2018/098452
Publication Date: 07.02.2019 International Filing Date: 03.08.2018
IPC:
H02M 3/335 (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
3
Conversion of dc power input into dc power output
22
with intermediate conversion into ac
24
by static converters
28
using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325
using devices of a triode or a transistor type requiring continuous application of a control signal
335
using semiconductor devices only
Applicants:
HUAWEI TECHNOLOGIES CO., LTD. [CN/CN]; Huawei Administration Building Bantian, Longgang District Shenzhen, Guangdong 518129, CN
Inventors:
LI, Yushan; US
YE, Liming; US
DAI, Heping; US
Priority Data:
15/819,20921.11.2017US
62/540,99803.08.2017US
Title (EN) AUXILIARY POWER SUPPLY APPARATUS AND METHOD
(FR) PROCÉDÉ ET APPAREIL D'ALIMENTATION ÉLECTRIQUE AUXILIAIRE
Abstract:
(EN) An apparatus includes a pulse-width modulation (PWM) generator configured to generate a PWM signal for controlling a power switch of a power converter, a bias switch and a bias capacitor connected in series and coupled to a magnetic winding of the power converter and a comparator having a first input connected to the bias capacitor, a second input connected to a predetermined reference and an output configured to generate a signal for controlling the bias switch to allow a magnetizing current from the magnetic winding to charge the bias capacitor when a voltage across the bias capacitor is less than the predetermined reference.
(FR) Cette invention concerne un appareil, comprenant un générateur de modulation d'impulsions en durée (MID) configuré pour générer un signal MID pour commander un commutateur de puissance d'un convertisseur de puissance, un commutateur de polarisation et un condensateur de polarisation connectés en série et couplés à un enroulement magnétique du convertisseur de puissance et un comparateur ayant une première entrée connectée au condensateur de polarisation, une seconde entrée connectée à une référence prédéterminée et une sortie configurée pour générer un signal pour commander le commutateur de polarisation pour permettre à un courant de magnétisation provenant de l'enroulement magnétique de charger le condensateur de polarisation lorsqu'une tension à travers le condensateur de polarisation est inférieure à la référence prédéterminée.
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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)