| 摘要 |
PURPOSE:To provide a system interconnection inverter of a simple configuration in which an operation control is automatically switched corresponding to a system frequency. CONSTITUTION:A system interconnection inverter comprises an inverter main circuit 1 interposed between a DC power source and an AC power system, a current controller 4 for controlling to drive the circuit 1 based on predetermined control data, and an operation controller 10 for conducting a protective operation, etc., wherein the controller 4 has a frequency analyzer 5 for analyzing a frequency of the power system, and the controller 10 has a data output circuit 20 for holding control data according to a frequency in response to a type of the system frequency. At the time of starting the inverter, control data corresponding to the analyzed frequency is read from the circuit 20, and set to a BPF 8 and a PWM pulse generator 9 in the controller 4. |
