Patent ID: 8913410
Filing Date: 2014-12-16
Classification: H02M

Abstract:
1. A converter device for enabling electric voltage levels available on first, second and third voltage lines of a first type to be transformed into a voltage on a voltage line of a second type, in either direction, said device comprising: a first main switching unit connected to a first voltage line of a first type and equipped with a first main switch; a second main switching unit connected to a second voltage line of the first type and equipped with a second main switch; a main switching point connected to a voltage line of a second type and connected to said first and said second main switching units; and a third main switch common to said first and to said second main switching units, said third main switch being connected between said main switching point and a third voltage line of the first type; first, second and third capacitors connected between said main switching point and respectively said first, said second and said third voltage lines of the first type; a first auxiliary switching unit connected by individual auxiliary switches between the first voltage line of the first type, the second voltage line of the first type, and a first auxiliary switching point, respectively; a second auxiliary switching unit connected by individual auxiliary switches between the first voltage line of the first type, the second voltage line of the first type, the third voltage line of the first type and a second auxiliary switching point, respectively; and a transformer having windings each having one free end and one end connected to said main switching point, the two free ends being respectively connected to said first point and said second auxiliary switching point.