| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide power conversion equipment capable of reliably switching control devices by improving reliability in signal transmission between the control devices. <P>SOLUTION: The power conversion equipment is composed of a power converter 5, and the control devices 1A, 1B. The respective control units include a means of storing the respective states of "operation", "operation preparation completion", "selection", "standby", and "maintenance" and of reading states of one's opposing party, a means of sending "a control change request" to one's opposing party, and a means of sending "a request answer" to the control device of one's opposing party. When one control device detects trouble during operation of the power converter, the control device stops the operation control of the power converter and requests a control change from the other. The other control device sends "a request answer" and starts the operation control of the power converter. Each signal of the "control change request", "request answer", "selection", and "standby" is triplexed for interconnecting the control devices thereof, and a majority circuit is provided at the reception side of the triplexed signal. <P>COPYRIGHT: (C)2011,JPO&INPIT |
