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Pub. No.:    WO/2011/016199    International Application No.:    PCT/JP2010/004746
Publication Date: 10.02.2011 International Filing Date: 26.07.2010
H02M 3/155 (2006.01)
Applicants: Mitsubishi Electric Corporation [JP/JP]; 7-3, Marunouchi 2-Chome, Chiyoda-Ku, Tokyo 1008310 (JP) (For All Designated States Except US).
URAKABE, Takahiro [--/JP]; (JP) (For US Only).
OKUDA, Tatsuya [--/JP]; (JP) (For US Only).
TANAKA, Yuuya [--/JP]; (JP) (For US Only).
KOBAYASHI, Masaru [--/JP]; (JP) (For US Only).
IKEDA, Matahiko [--/JP]; (JP) (For US Only).
MAEKAWA, Hirotoshi [--/JP]; (JP) (For US Only)
Inventors: URAKABE, Takahiro; (JP).
OKUDA, Tatsuya; (JP).
TANAKA, Yuuya; (JP).
KOBAYASHI, Masaru; (JP).
IKEDA, Matahiko; (JP).
MAEKAWA, Hirotoshi; (JP)
Agent: MURAKAMI, Keigo; 35-8, Minamimukonoso 3-chome, Amagasaki-shi, Hyogo 6610033 (JP)
Priority Data:
2009-182127 05.08.2009 JP
(JA) DC/DC電力変換装置
Abstract: front page image
(EN)Disclosed is a DC/DC power converter wherein mean power consumption can be reduced over a wide range of DC voltage ratios. A control circuit (120) changes a switching frequency (f) at which IGBTs (S1-S4) are turned ON/OFF in accordance with a voltage ratio (k) on the basis of the following equations, so that the magnitude (ΔI) of the current ripple flowing in a reactor (Lc) is a prescribed fixed value irrespective of the voltage ratio (k) (k = V2 / V1) of the DC voltage conversion. When 1 ≦ k < 2: f = (V1 / (2 × L × ΔI)) × (k - 1) × (2 - k) / k When k > 2: f = (V1 / (2 × L × ΔI)) × (k - 2) / k
(FR)L'invention a pour objectif de réaliser un convertisseur électrique CC/CC permettant de réduire la consommation d'énergie électrique moyenne sur une large plage de rapport de tension en courant continu. Afin que la grandeur (ΔI) de fluctuation du courant qui circule dans une bobine de réactance (Lc) constitue une valeur constante prédéterminée indépendamment du rapport (k) de tension de conversion de tension en courant continu(k=V2/V1), le circuit de commande (120) est tel qu'il modifie la fréquence de commutation (f) qui met en mode marche / arrêt les IGBT (S1 à S4) selon un rapport de tension (k) basé sur la formule: lorsque 1≦k<2:f=(V1/(2×L×ΔI))×(k-1)×(2-k)/k. Lorsque k>2 :f=(V1/(2×L×ΔI))×(k-2)/k.
(JA)直流電圧比の広い範囲における平均的な電力消費量の低減を可能とするDC/DC電力変換装置を得ることを目的とする。制御回路(120)は、リアクトルLcに流れる電流リプルの大きさΔIが直流電圧変換の電圧比k(k=V2/V1)に拘わらず所定の一定値となるよう、下式に基づき電圧比kに応じてIGBTS1~S4をオンオフするスイッチング周波数fを変化させるようにした。 1≦k<2の場合: f=(V1/(2×L×ΔI))×(k-1)×(2-k)/k k>2の場合: f=(V1/(2×L×ΔI))×(k-2)/k
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 (BW, GH, GM, KE, LR, 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 (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, 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: Japanese (JA)
Filing Language: Japanese (JA)