| 摘要 |
PURPOSE:To improve the utilization factor of sunlight in spite of fluctuation in temperature, by compensating a voltage at the time of starting up according to the temperature of a solar battery, in a power generating system in which an inverter is started up when the no-load voltage of the solar battery reaches at a value larger than a prescribed value. CONSTITUTION:A temperature is detected by a temperature detector 5 arranged adjacently to the solar battery 1. A detected value is converted to a voltage value, and is sent to a start up circuit 3, and a voltage V0, is set by correcting a reference voltage V0 at the time of starting up in which an open voltage regulated according to a quantity of solar radiation under a constant temperature is set as reference, by a differential amplifier 7. A corrected voltage V0, is compared with the open voltage Vx of the solar battery 1 at a comparator 8, and when the latter is larger than the former, an inverter part 2 is started up by a control circuit 4. Under the temperature where the reference voltage V0 is set, a correction quantity is zero, and since the open voltage of the solar battery 1 increases under the temperature less than that, the reference voltage is corrected to a plus side, and it is corrected to a minus side under the temperature exceeding that. |
