METHOD FOR CONTROLLING PARALLEL SWITCHED RESERVE CURRENT SOURCES AND DEVICE WITH PARALLEL SWITCHED RESERVE CURRENT SOURCES

摘要

1. A method of controlling several parallel connected backup power sources, each of the backup current sources on the input side being detachably connected via an inductor to the AC network, and on the output side connected to a common load bus, it is possible to change the output from each individual backup source power current, and the method comprises the steps of:! - in case of AC mains failure - at least the standby current sources affected by the failure are disconnected from the AC mains; ! - after the return to operation of the AC network - again connect the backup current sources one after the other with the AC network, and! - coordinate among themselves the power given by separate redundant current sources,! characterized in that for matching between the power supplied by separate backup sources (2), when part of the backup current sources (2) on the input side is connected to the AC network (5), and the other part of the backup current sources (2) is not connected to the input side with the AC network (5), determine the phase angle (Δφ) between the AC network (5) and the load bus (4) and regulate the output from each of the backup sources (2) not yet connected to the AC network (5) again current power depending on phase la (Δφ). ! 2. The method according to claim 1, characterized in that the power supplied by the backup power sources (2) not yet reconnected to the AC network (5) is regulated independently from each other depending on the phase angle (Δφ). ! 3. The method according to any one of claims 1 or 2, characterized in that the phase angle (Δφ) between the network (5) per