| 摘要 |
PURPOSE:To prevent a biased 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 24 for detecting an input current of the transformer, a second current detector 22 for outputting an output current of the transformer, a biased magnetization preventing unit 30 for removing a DC component of a detection signal of the first detector, and a controller 18 for subtracting an output of the unit 30 from a detection signal of the second detector, amplifying an error of a reference power source 20 of a sine wave and controlling the inverter. |
