| 摘要 |
PURPOSE:To simplify the configuration and the regulation of a circuit by controlling a converter which converts the DC output of a solar battery or the like to AC and feeds it to an AC power source system by multiplying the detected system voltage by the instructed power amount. CONSTITUTION:The DC energy of a solar battery 1 is supplied through an inverter 2 in which switching elements S1-S4 are connected in a bridge and an AC reactor 15 to an AC power source system 3. At this time the system voltage of a sinusoidal waveform is detected by PT14, is multiplied by a multiplier 17 by the DC amount of a power instruction unit 4 for calculating and instructing the adequate power amount of the solar battery 1 with the value and the sunshine amount, the output of the multiplier and the output current detected value of the inverter are inputted to a control circuit 16, thereby controlling the ON and OFF of switching elements S1-S4. Accordingly, the circuit configuration can be simplified without necessity of preparing a sinusoidal wave oscillator, and the operation of the power factor 1 can be performed with good rapid responsiveness. |
