Patent ID: 8115435

Claim:
A control device in combination with an AC-DC current converter electrically connected to a polyphase synchronous rotary electrical machine comprising a rotor and a stator comprising a plurality of windings connected together at their extremities, a number of windings being equal to a number of phases of said polyphase synchronous rotary electrical machine; said AC-DC current converter being disposed between said polyphase synchronous rotary electrical machine and a DC electrical energy storage unit including positive and negative terminals, said AC-DC current converter comprising, for each phase, a branch of high and low power switches connected in series and disposed between said positive and negative terminals, the midpoint between said high and low power switches comprising at least one of inputs and outputs of said AC-DC current converter and being connected to said extremities of said windings; said control device comprising: means of generating an angular position signal representing the angular position of said rotor; and at least one digital table ( 20 ) comprising a plurality of storage locations storing digital words addressed by said angular position signal (θ(t)) and delivering at an output thereof direct binary control signals ( 200 - 202 ) equal in number to the number of said phases; each of said binary control signals ( 200 - 202 ) controlling the switching of said high and low power switches ( 250 H to 252 B) according to a predetermined timing sequence depending on the instantaneous value of said angular position signal (θ(t)) addressing said digital tables ( 20 ).