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Solar power generation device

  • US 9,184,312 B2
  • Filed: 07/08/2008
  • Issued: 11/10/2015
  • Est. Priority Date: 07/08/2008
  • Status: Active Grant
First Claim
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1. A solar power generation device comprising:

  • one or more solar cells electrically connected in series or in parallel to form a connection unit; and

    a bypass circuit that is connected in parallel to the connection unit and performs a conduction operation by bypassing the connection unit when electromotive force of the connection unit is equal to or lower than a predetermined value, whereina solar battery string is formed by electrically connecting in series one or more solar battery modules, each of which is equipped with one or more sets of combination of the connection unit and the bypass circuit, and the solar battery string is connected by a power line, andthe solar power generation device further comprises;

    a transmitting circuit connected in series with and upstream of the solar battery string, the transmitting circuit transmitting transmission signal of a predetermined amplitude through the solar battery string;

    a receiving circuit connected in series with and downstream of the solar battery string, the receiving unit receiving the transmitted transmission signal after the transmission signal passes through the solar battery string;

    an attenuating circuit that is provided in the bypass circuit and attenuates an amplitude of the transmission signal, whereinthe transmission signal includes plural frequency components, each frequency component being attenuated by a bypass circuit in a different one of the solar battery modules in the solar battery string when direct-current power is conducted by the respective bypass circuit.

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