Patent ID: 8659196

Claim:
A power supply device for a system of a motor vehicle, comprising: a set of armature coils assembled in a polygonal coupling mode such that an output terminal of each one of the armature coils being connected to an input terminal of a single adjacent one of the armature coils so as to form a polygon; and a single bridge rectifier connected to the set of armature coils and comprising a set of controllable elements carrying out switching between a first operating mode in which some of the armature coils are electrically connected in series and a second operating mode in which all of the armature coils are electrically connected in parallel; the controllable elements comprising thyristors, the thyristors being assembled in three pairs (T 1 , T 2 and T 3 ) connected to terminals of the coils ( 1 , 2 , 3 , 4 , 5 and 6 ) alternating with three pairs of diodes (D 1 , D 2 and D 3 ), in such a way that, in the absence of activation of the thyristors (T 1 , T 2 and T 3 ), the coils are electrically connected in series, two by two.