| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system linkage inverter device that can output an output voltage that is improved in waveform distortion irrespective of a load variation and the supply capacity of a DC power supply by setting an appropriate DC link voltage in accordance with a power supply state to a system, and a system linkage inverter device. <P>SOLUTION: An inverter output current I2 is measured by a current sensor 50, and it is determined whether the current is not smaller than a prescribed current or not. When the current is not smaller than the prescribed current, the DC link voltage VL is set to a specified value and repeatedly subjected to processing loops. Here, the specified value is a voltage value that does not cause the waveform distortion even if the inverter output voltage is varied. Even if a DC voltage V1 is varied and the DC link voltage VL is varied accompanied by the variation of a load, the DC link voltage VL sufficient for outputting the inverter output voltage V2 can be secured, and the inverter output voltage V2 improved in the waveform distortion can be supplied irrespective of the variation of the inverter output current I2. <P>COPYRIGHT: (C)2007,JPO&INPIT |
