| 摘要 |
PURPOSE:To prevent an irregular magnetization of a transformer of an output of an inverter and to output an AC having no harmonic wave to an output of the transformer in a generator system which is operated by a reverse power flow of the inverter and a commercial power source using a solar cell, a fuel cell. CONSTITUTION:A generator system comprises a battery 2 such as a solar cell, a fuel cell, etc., an inverter 4 for converting a DC output of the cell to an AC, a transformer 10 for transforming an output of the inverter, and a controller for controlling the output of the inverter, wherein the system is controlled by a reverse power flow to a commercial power source. The system also comprises a first current detector 16 for detecting an input current of the transformer, a second current detector 22 for outputting an output current of the transformer, a fundamental wave removing unit 24 for removing a fundamental wave of a detection signal of the second detector, an error amplifier 26 for amplifying an error of a harmonic wave of an output of the unit 24 and a reference signal of a '0' level, and a controller for adding a detection signal of the first detector to an error amplified signal, amplifying an error of a sine wave 20 and controlling the inverter. |
