| 摘要 |
PURPOSE:To provide a parallel operation controller for balancing an allotted current at a high speed in a power source system in which a plurality of instantaneous control type AC output converters are connected in parallel and operated in parallel with a common load. CONSTITUTION:Outputs of converters are connected to simulated bus 9. A cross current DELTAI1 flowing between the converters is detected by the bus 9, Z x al) is obtained by a cross current limiting virtual impedance circuit 405, a signal V1* (=V*- ZXDELTAI1) obtained by subtracting this signal from a bus voltage command value V* by a subtracter 504 is used as a command value of an instantaneous voltage controller 403 to be so operated as to eliminate the cross current. |
