Patent ID: 8618777

Claim:
A regulation device ( 1 , 2 ) for controlling a polyphase rotary electrical machine which device can bring control to said machine using a predetermined set value of a direct voltage (B+) of an on-board electrical network which is supplied by said machine, comprising: an analogue control block ( 10 ) having a periodic excitation current (+EXC, âˆ’EXC) with a duty cycle (RC) which is determined by a digital processing block ( 9 ), on the basis of an error voltage between said predetermined set value and said direct voltage (B+) of the on-board electrical network; a system ( 11 ) for making said digital processing block ( 9 ) electrically self-sufficient, said system ( 11 ) comprising voltage maintenance means, with a self-sufficient capacitor ( 110 ), for providing a self-sufficient supply voltage (V 0 ) which supplies exclusively said digital processing block ( 9 ); and a self-sufficient control means ( 111 ) for controlling the self-sufficiency of the digital processing block ( 9 ) according to the amplitude of the self-sufficient supply voltage (V 0 ), wherein said self-sufficient control means ( 111 ) comprise means ( 12 ) for stopping at least one clock ( 5 ) of said digital processing block ( 9 ) when said self-sufficient supply voltage (V 0 ) is lower than a reference supply voltage (V 1 ) of said digital block ( 9 ).