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1. (WO2019049299) POWER CONVERSION DEVICE, COMPRESSOR, BLOWER, AND AIR CONDITIONING DEVICE
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Pub. No.: WO/2019/049299 International Application No.: PCT/JP2017/032405
Publication Date: 14.03.2019 International Filing Date: 08.09.2017
IPC:
H02M 5/44 (2006.01) ,H02M 7/48 (2007.01)
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
5
Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
40
with intermediate conversion into dc
42
by static converters
44
using discharge tubes or semiconductor devices to convert the intermediate dc into ac
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
7
Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42
Conversion of dc power input into ac power output without possibility of reversal
44
by static converters
48
using discharge tubes with control electrode or semiconductor devices with control electrode
Applicants:
三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP/JP]; 東京都千代田区丸の内二丁目7番3号 7-3, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008310, JP
Inventors:
津村 晃弘 TSUMURA, Akihiro; JP
▲高▼田 茂生 TAKATA, Shigeo; JP
坂廼邉 和憲 SAKANOBE, Kazunori; JP
楠部 真作 KUSUBE, Shinsaku; JP
Agent:
特許業務法人きさ特許商標事務所 KISA PATENT & TRADEMARK FIRM; 東京都港区虎ノ門二丁目10番1号 虎ノ門ツインビルディング東棟8階 East 8F, TORANOMON TWIN BLDG., 10-1 Toranomon 2-chome, Minato-ku, Tokyo 1050001, JP
Priority Data:
Title (EN) POWER CONVERSION DEVICE, COMPRESSOR, BLOWER, AND AIR CONDITIONING DEVICE
(FR) DISPOSITIF DE CONVERSION DE PUISSANCE, COMPRESSEUR, VENTILATEUR ET DISPOSITIF DE CLIMATISATION
(JA) 電力変換装置、圧縮機、送風機、および空気調和装置
Abstract:
(EN) This power conversion device comprises: a rectifier that rectifies a voltage supplied from a three-phase alternating current power source; a step-down circuit that has a step-down switching element, a reactor, a reverse current prevention element, and a smoothing capacitor, and that lowers a direct current voltage supplied from the rectifier; and an inverter circuit that converts the direct current voltage smoothed by the smoothing capacitor to an alternating current voltage. The power conversion device has: an imbalance determination means that determines whether a voltage imbalance has occurred in the three-phase alternating current power source on the basis of the states of the step-down circuit and of the smoothing capacitor; and a step-down control means that causes the step-down switching element to switch if the imbalance determination means determines that a voltage imbalance has occurred.
(FR) La présente invention concerne un dispositif de conversion de puissance qui consiste : en un redresseur qui redresse une tension fournie depuis une source d'alimentation en courant alternatif triphasé ; en un circuit abaisseur qui présente un élément de commutation abaisseur, en un réacteur, en un élément de prévention de courant inverse et en un condensateur de lissage et qui abaisse une tension en courant continu fournie depuis le redresseur ; et en un circuit onduleur qui convertit la tension de courant continu lissée par le condensateur de lissage en une tension de courant alternatif. Le dispositif de conversion de puissance présente : un moyen de détermination de déséquilibre qui détermine si un déséquilibre de tension s'est produit dans la source d'alimentation en courant alternatif triphasé sur la base des états du circuit abaisseur et du condensateur de lissage ; et un moyen de commande d'abaissement qui amène l'élément de commutation abaisseur de tension à commuter si le moyen de détermination de déséquilibre détermine qu'un déséquilibre de tension s'est produit.
(JA) 三相交流電源から供給された電圧を整流する整流器と、降圧スイッチング素子とリアクトルと逆流防止素子と平滑コンデンサとを有し、整流器から供給された直流電圧を降圧する降圧回路と、平滑コンデンサによって平滑化された直流電圧を交流電圧に変換するインバータ回路と、を有する電力変換装置。電力変換装置は、三相交流電源に電圧不平衡が発生したか否かを降圧回路および平滑コンデンサの状態から判定する不平衡判定手段と、不平衡判定手段において電圧不平衡が発生したと判定された場合、降圧スイッチング素子をスイッチングさせる降圧制御手段と、を有する。
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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: Japanese (JA)
Filing Language: Japanese (JA)