Title:
PHOTOVOLTAIC POWER GENERATION SYSTEM AND POWER FEEDING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/098769
Kind Code:
A1
Abstract:
Provided are a photovoltaic power generation system and a power feeding system that are equipped with: means (6, 7) for detecting a connection-point voltage (Va) at the connection point of a power grid (5) and a power conversion apparatus (3), and the output current (Ia) of the power conversion apparatus (3); an active-power detection unit (8) which obtains active power from the connection-point voltage (Va) and the output current (Ia); a grid-state detection unit (10) which detects the power supplying state or facility operating state within the power grid (5), and outputs a level detection signal; an active-power setting unit (11) which switches between preset first and second values on the basis of the level detection signal, and outputs the value as an active-power setting value (Pref); a mass-system calculation unit (12) which calculates the angular frequency (ω) of the output voltage of the power conversion apparatus (3), on the basis of the output of the active power detection unit (8), the output of the active power setting unit (11), and the output of the grid-state detection unit (10); and an electric characteristics calculation unit (15) which calculates an output-voltage target value (Ec) for the power conversion apparatus (3), on the basis of the angular frequency (ω), the current value (Ia), and a setting-voltage value (Vref).
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Inventors:
KIMURA, Misao (())
木村 操 (())
NORO, Yasuhiro (())
野呂 康宏 (())
HAYASHI, Hideki (())
林 秀樹 (())
OMATA, Kazuya (())
木村 操 (())
NORO, Yasuhiro (())
野呂 康宏 (())
HAYASHI, Hideki (())
林 秀樹 (())
OMATA, Kazuya (())
Application Number:
JP2011/077573
Publication Date:
July 26, 2012
Filing Date:
November 29, 2011
Export Citation:
Assignee:
KABUSHIKI KAISHA TOSHIBA (1-1 Shibaura 1-chome, Minato-ku Tokyo, 01, 〒1058001, JP)
株式会社 東芝 (〒01 東京都港区芝浦一丁目１番１号 Tokyo, 〒1058001, JP)
KIMURA, Misao (())
木村 操 (())
NORO, Yasuhiro (())
野呂 康宏 (())
HAYASHI, Hideki (())
林 秀樹 (())
株式会社 東芝 (〒01 東京都港区芝浦一丁目１番１号 Tokyo, 〒1058001, JP)
KIMURA, Misao (())
木村 操 (())
NORO, Yasuhiro (())
野呂 康宏 (())
HAYASHI, Hideki (())
林 秀樹 (())
International Classes:
H02J3/38; G05F1/67
Attorney, Agent or Firm:
KURATA, Masatoshi et al. (1-12-9 Toranomon, Minato-k, Tokyo 01, 〒1050001, JP)
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Claims: