Title:
SOLAR PHOTOVOLTAIC POWER GENERATOR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/102051
Kind Code:
A1
Abstract:
Adoption of solar photovoltaic power generator systems has increased in recent years as awareness of the importance of protecting the environment grows, and it has become necessary to search out output maxima rapidly and accurately. Disclosed is a solar photovoltaic power system capable of tracking maxima at high speed and searching for maxima with improved accuracy. The system comprises solar panels, and a power conditioner that searches for output maxima of generated power that is outputted from the solar panels and supplies same to a power system by controlling either the voltage or the current of the generated power as an operating value according to the characteristics of the solar panels. The power conditioner further comprises a data memory unit that stores a plurality of operating values by way of the fluctuation control, and a plurality of patterns of the generated power from the solar panels that are based on the operating values; and a maxima tracking unit that adds new operating values to some operating values when running past searches on the basis of the patterns of the generated power from the solar panels of the past searches, and computes next search operating values. When the deviation of the plurality of generated power that is outputted by the searching by the maxima tracking unit is less than or equal to a prescribed value, such will be treated as the maximum value.
Inventors:
OSAKO Kazuyoshi (1-1, Higashinarashino 7-chome, Narashino-sh, Chiba 11, 〒2758611, JP)
尾嶝 一義 (〒11 千葉県習志野市東習志野七丁目１番１号 株式会社日立産機システム内 Chiba, 〒2758611, JP)
尾嶝 一義 (〒11 千葉県習志野市東習志野七丁目１番１号 株式会社日立産機システム内 Chiba, 〒2758611, JP)
Application Number:
JP2010/072882
Publication Date:
August 25, 2011
Filing Date:
December 20, 2010
Export Citation:
Assignee:
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (3 Kanda Neribei-cho, Chiyoda-ku Tokyo, 22, 〒1010022, JP)
株式会社日立産機システム (〒22 東京都千代田区神田練塀町３番地 Tokyo, 〒1010022, JP)
OSAKO Kazuyoshi (1-1, Higashinarashino 7-chome, Narashino-sh, Chiba 11, 〒2758611, JP)
株式会社日立産機システム (〒22 東京都千代田区神田練塀町３番地 Tokyo, 〒1010022, JP)
OSAKO Kazuyoshi (1-1, Higashinarashino 7-chome, Narashino-sh, Chiba 11, 〒2758611, JP)
International Classes:
H01L31/04; G05F1/67; H02M7/48
Attorney, Agent or Firm:
POLAIRE I.P.C. (7-1 Hatchobori 2-chome, Chuo-ku Tokyo, 32, 〒1040032, JP)
Claims: