POWER CONDITIONER FOR PHOTOVOLTAIC GENERATION, PHOTOVOLTAIC GENERATION SYSTEM, AND OUTPUT POWER CONTROL METHOD OF PHOTOVOLTAIC GENERATION SYSTEM

摘要

PPROBLEM TO BE SOLVED: To provide a power conditioner for photovoltaic generation capable of suppressing the decline and fluctuation of the power generation quantity of a photovoltaic cell while preventing the decline of power to be taken out from the photovoltaic cell by appropriately executing follow-up control to the maximum power point. PSOLUTION: The power conditioner 10 for the photovoltaic generation relating to one embodiment of this invention is the power conditioner for the photovoltaic generation for converting DC power from the photovoltaic cell 5 to generate AC power and linking the photovoltaic cell 5 to a system power source, and is provided with an acquisition means 82 for acquiring the current/voltage characteristics of the photovoltaic cell 5 from a low current state to a low voltage state, a determination means 83 for determining a voltage when the power becomes maximum as a voltage target value, and an adjustment means 84 for adjusting the voltage of the photovoltaic cell 5 to the voltage target value determined by the determination means 83. The acquisition means 82 acquires the current/voltage characteristics at a time interval ≥1 minute and ≤ three hours. PCOPYRIGHT: (C)2009,JPO&INPIT