SOLAR POWER SYSTEM AND CONTROL SYSTEM

WIPO Patent Application WO/2011/122165

A1

In a case in which a local solution to current-voltage characteristics is generated by way of a partial shade, it has been difficult to perform control for causing a solar cell to operate at a maximum power point efficiently in terms of power and at a low cost. During steady state operation, an MPPT control unit 1 for performing the normal hill climbing method is selected, and if the change amount of the output current of the solar cell is greater than or equal to a predetermined threshold, an MPPT control unit 2 for increasing the variation width of the output voltage of the solar cell to greater than the hill climbing method is selected. By way of such control, it is possible to achieve both efficient operation in a steady state and avoidance of a local solution to a partial shade at a low cost.

KOHNO, Tohru (HITACHI LTD., 280, Higashikoigakubo 1-chome, Kokubunji-sh, Tokyo 01, 〒1858601, JP)
河野　亨 (〒01 東京都国分寺市東恋ヶ窪一丁目２８０番地　株式会社日立製作所　中央研究所内 Tokyo, 〒1858601, JP)
FUTAMI, Motoo (HITACHI LTD., 1-1, Omika-cho 7-chome, Hitachi-sh, Ibaraki 92, 〒3191292, JP)

JP2011/053700

October 06, 2011

February 21, 2011

Click for automatic bibliography generation  

HITACHI, LTD. (6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo, 80, 〒1008280, JP)
株式会社日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
KOHNO, Tohru (HITACHI LTD., 280, Higashikoigakubo 1-chome, Kokubunji-sh, Tokyo 01, 〒1858601, JP)
河野　亨 (〒01 東京都国分寺市東恋ヶ窪一丁目２８０番地　株式会社日立製作所　中央研究所内 Tokyo, 〒1858601, JP)

G05F1/67; H01L31/04; H01L31/042

TSUTSUI, Yamato (Tsutsui & Associates, 3F Shinjuku Gyoen Bldg.,3-10, Shinjuku 2-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)

View/Download PDF      PDF Help

Previous Patent: STATE-OF-CHARGE ESTIMATION METHOD, STATE-OF-CHARGE ESTIMATION DEVICE, AND SECONDARY-BATTERY POWER SY...

Next Patent: COMMUNICATION CONTROL METHOD, COMMUNICATION SYSTEM, AND MANAGEMENT SERVER