Patent ID: 8598749
Filing Date: 2013-12-03
Classification: H02M

Abstract:
1. A converter device for enabling an AC voltage and current to be supplied by filtering pulses on a modulated signal output from three substantially DC voltages available, respectively, on a reference voltage line, and on two DC voltage inputs of opposite signs from two switching units, said device comprising: a reference voltage line; a modulated signal output; two switching units, each of said switching units comprising: an input, a switching output, and a first switch connected between said input and said switching output, said switching unit being in a first switched state when said first switch is closed; a second switch associated with each switching unit and connected between said associated switching unit and the modulated signal output, for activating said switching unit by closing said second switch; a third switch associated with each of said switching units and connected between said associated switching unit and the modulated signal output; the output of each of said switching units for supplying pulses having an amplitude varying between the level of the voltage on the input of that switching unit when that switching unit is in said first state, and the level of a voltage on said reference voltage line when that switching unit is in a second state in which the first switch of that switching unit is open; wherein when the first switch of that switching unit is switched from said first state to said second state while the third switch of that switching unit remains open, said third switch remaining open during at least a portion of the duration of said first state.