| 摘要 |
PROBLEM TO BE SOLVED: To execute general use output control among PV inverters at the time of independent operation and to attain the parallel operation of the PV inverters by allowing a follow-up control side output to be followed up with a crest value by a crest value soft start part based upon a crest signal. SOLUTION: When a reference phase zero point timing pulse and a crest value reference are outputted from a main control side operation controller 21, a follow-up control side operation controller 28 in a follow-up control side inverter 2 executes follow-up synchronization based upon these signals and outputs output voltage. Namely a crest value soft start part gradually increases the output of the crest value of a reference waveform synchronized in a timing follow-up control part with that of the device 21 up to the current crest value of a crest value reference received from an output current crest value control part in the device 21 and the output is controlled so as to be continued. Consequently both the controllers 21, 28 are set up to a synchronous operation state. |
