| 摘要 |
PURPOSE:To improve the operating efficiency of the solar battery by a method wherein input voltage, output voltage/frequency of an inverter, connected to the solar battery, is controlled into constant while a pump, whose delivery pressure becomes constant in a predetermined rotating speed area, is employed. CONSTITUTION:The inverter 5 is connected to the solar battery 1, the pump 7 is connected to the inverter 5 through an A.C. motor 6, the input voltage of the inverter 5 is controlled in constant with respect to the change of the output of the solar battery 1, the value of output voltage/frequency in the inverter 5 is controlled in constant, and the pump 7, whose delivery pressure becomes consstant in the predetermined rotating speed area, is employed. According to this method, an operation at the maximum output point of the solar battery is permitted, a rotating speed in accordance with the output of the inverter 5 may be obtained and the operation of the pump is permitted to a low rotating speed area, therefore, the operating efficiency of the solar battery may be improved. |
