| 摘要 |
<p>PROBLEM TO BE SOLVED: To quickly search the optimum operating point of a solar battery. SOLUTION: The control device is provided with a current voltage characteristic-grasping means 100 for approximately grasping current-voltage characteristics by measuring current the open voltage of a solar battery 3, short-circuiting current, and current when being controlled to a voltage that is slightly smaller than the open voltage, an optimum operation point determination means 101 for determining an optimum operating point according to the cross point between a first characteristic straight line L1 for indicating the open voltage and a current when being controlled to a voltage that is slightly smaller than the open voltage, and a second characteristic straight line L2 for indicating the characteristics of the short-circuiting current, and a control means 102 for controlling the current of the solar cell so that the solar battery voltage reaches the voltage of an optimum operation point P1 while a load is connected.</p> |
