| 摘要 |
PURPOSE:To optimize the control of a solar battery over a wide range of the solar radiation energy by using a proportional gain correction means which corrects the output of a proportional computing element in response to the change of the solar radiation energy to output the corrected output. CONSTITUTION:A proportional gain correction means 40 consists of a power computing element 41 which obtains the output power of a solar battery 2 and a function computing element 42 which corrects the output of the element 31 based on the output power of the battery 2, and outputs the corrected output to an adder 33. Therefore,the output of the element 31 is multiplied by the output power of the battery 2 which changes in proportion to the solar radiation energy via the element 42. Thus it is possible to obtain a function equivalent to that using a variable gain proportional computing element. In other words, a voltage controller 30 having the variable proportional gain optimized regardless of the solar radiation energy can be obtained. As a result, a control constant can be optimized over a wide range of change of the solar radiation energy.
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