Patent ID: 9425696
Filing Date: 2016-08-23
CPC Classification: H02M

Claim Text:
1. A rectifying circuit for providing an interface between an alternating current supply grid and a direct current grid, said circuit comprising: a transformer having a first and second primary windings and first and second secondary windings; a first half-wave rectifier for outputting positive half-waves of an AC signal supplied from said AC supply grid; a second half-wave rectifier for outputting negative half-waves of said AC signal; a first controlled switch for continuously switching on and off supply of said positive half-waves to said first primary winding during each of said positive half-waves; a second controlled switch for continuously switching on and off supply of said negative half-waves to said second primary winding during each of said negative half-waves; a first rectifier circuit connected to said first secondary winding of said transformer for generating a first DC output voltage based on a discharge current of said transformer during a switched-off state of said first and second controlled switches; and a second rectifier circuit connected to said second secondary winding of said transformer for generating a second DC output voltage based on a discharge current of said transformer during said switched-off state of said first and second controlled switches.