| 摘要 |
PROBLEM TO BE SOLVED: To achieve high-speed control to level the total output power at all inverters in parallel synchronous operation of a plurality of inverters.SOLUTION: Daisy-chained inverters 10, 20-1, 20-2 each include loopback communication units 15, 25 that transmit or receive a data frame to or from an upstream side and a downstream side in daisy-chain connection per inverter control cycle of parallel synchronous operation. The loopback communication unit 25 of the slave inverter 20-1 includes a data multiplexing unit M that generates a multiplexed data frame by superposing data on its inverter on data in a data frame received from the downstream slave inverter 20-2 when a data frame is transmitted from the most downstream slave inverter 20-2 to the master inverter 10 via the daisy-chain connection. The loopback communication unit 25 transmits the generated multiplexed data frame to the master inverter 10. |
