AUTOMATIC SWITCHING BACKUP SOURCE Russian patent published in 2017 - IPC H02J9/06 

FIELD: electricity.

SUBSTANCE: device comprises two AC power sources connected to the AC buses, an active filter, and three responsible consumers connected to the AC buses. Two AC power sources are connected to the AC buses through the switching devices formed on the basis of two power electronic switches based on the counter-enabled thyristor pair without the damping chain in one of the thyristors. The device is equipped with the units of the electrical energy quality control indicators connected to the AC power sources, the active filter and the responsible consumers buses, the control unit, to the inputs of which the units of the electrical energy quality control indicators are connected, and its outputs are connected to the switching devices formed on the basis of two power electronic switches based on the counter-enabled thyristor pair without the damping chain in one of the thyristors, and the active filter with the connected thereto unit setting the acceptable electrical energy quality indicators and the communication lines with the automated technological process control system controlled by the separate unit.

EFFECT: eliminating power breaks at switching and improving the electrical energy quality.

2 dwg