Patent ID: 9018862
Filing Date: 2015-04-28
Classification: H02P,H04B

Abstract:
1. An alternating current rotating machine control device that communicates between a plurality of power conversion devices and information instruments, the power conversion devices driving alternating current rotating machines at a predetermined speed, the alternating current rotating machine control device comprising: a top level control device that issues commands to the power conversion devices and monitors the power conversion devices and the information instruments; a first communication line that connects the top level control device and a master station among the power conversion devices, and transmits and receives a signal between the top level control device and the master station; and a second communication line that connects the plurality of power conversion devices to each other, and connects the plurality of power conversion devices to the information instruments, wherein the to level control device designates in advance a plurality of the power conversion devices as candidates for the master station, and in the event that communication via the first communication line between the master station and the top level control device becomes impossible, one of the remaining power conversion devices becomes the master station.