| 摘要 |
PROBLEM TO BE SOLVED: To obtain a parallel power system which can easily perform balanced operation even if heterogenous power units exist. SOLUTION: The parallel power system 100 includes a plurality of power units 50A, 50B and 50C which are connected in parallel with a common load 60 and whose communication ports CO are connected with one another by a communication line 33. The power units each have a switching circuit 9 which converts an input AC power into DC power; an output current detecting circuit 19 which detects an output current; an output voltage detecting circuit 17 which detects an output voltage; a PWM controller 21 which controls the switching circuit 9 so that the output voltage value may keep the target voltage value; and a CPU apparatus 20 which is connected to the communication port CO and performs intercommunication among the plurality of power units and receives balance information and determines the target voltage value, based on the respective balance information. COPYRIGHT: (C)2009,JPO&INPIT
|
