| 摘要 |
A combined device for enhancement of power supply quality in three-wire electric mains comprises a reactive power thyristor source with a controlled reactor, primary windings of which are connected to the electric mains, and control windings, transversely connected to the electric circuit of control valves of the reactive power thyristor source, are star-connected and connected to the electric circuit phases through the reactor control windings, to which banks of capacitors are parallel connected, which are connected to phases of uncontrolled rectifier loaded to bias windings; moreover, a unit for minimum voltage control comprising a transformer with a terminal for connection to the network, an input voltage converter connected to said transformer, a reference voltage source, a voltage comparator, an integrating circuit, a threshold unit and an actuating device. |
