DEVICE FOR CONNECTION OF CONTROLLED VOLTAGE RECTIFIER TO SOURCE OF AC VOLTAGE Russian patent published in 2009 - IPC H02M1/36 

FIELD: electricity.

SUBSTANCE: in device for connection of controlled voltage rectifier to source of AC voltage, comprising current-limiting circuits, one for each input terminal of rectifier, every of which connects input terminal of specified device, being connected to one of input terminals of specified voltage source, with input terminal of specified device, being connected to one of input terminals of controlled voltage rectifier, besides each current-limiting circuit comprises induction element, additional current-limiting element, and also the first and second switches, the first terminals of which are connected to input terminal of specified device, and the second terminal of the second switch via additional current-limiting element is connected to the second terminal of the first switch and is connected to the first terminal of induction element, the second terminal of which is connected to outlet terminal of specified device, differing by the fact that each current-limiting circuit comprises the first reactor, which is connected as an additional current-limiting element, and also the second reactor, connected between the second terminal of the second switch and the first terminal of induction element, and capacitor, one of terminals of which is connected to the first terminal of induction element, and the second terminal of capacitor is connected to zero terminal, which is common for all current-limiting circuits.

EFFECT: lower power and energy losses in process of preliminary charging of output capacitor of controlled voltage rectifier, reduced time of preliminary charging of specified capacitor, increased voltage at this capacitor on completion of its preliminary charging and considerable drop of voltage pulsation at voltage source terminals in working mode of controlled voltage rectifier.

3 cl, 5 dwg