| 摘要 |
<p>Provided is an open-circuit voltage control system that is used in a photovoltaic power generation system comprising: a string (7) further comprising solar cell panels connected in series; and a switch (5) for switching on/off a route for supplying DC voltage generated within the string to a load. The open-circuit voltage control system controls the open-circuit voltage of the string. The open-circuit voltage control system is provided with: an open-circuit voltage measurement apparatus (3) for measuring the open-circuit voltage of the string in open-circuit state wherein the string and the load are not connected; drive control apparatuses (11) for controlling the output voltages from the solar cell panels; and a calculation control apparatus (4) for outputting signals for controlling the drive control apparatuses, when the string and the load are in open-circuit state, such that the open-circuit voltage will not be less than a voltage wherein the load is able to operate and will not be more than a withstanding voltage of the photovoltaic power generation system, on the basis of the open-circuit voltage measured by the open-circuit voltage measurement apparatus.</p> |
