Plane de travail Vds=Rs isd +Ls d/dt (isd)-Ls ws isq +Msr d/dt ird - Msr ws irq Vqs=Ls ws isd + Rs isq+Ls d/dt(isq)+ Msr ws ird + Msr d/dt( irq) 0=Msr d/dt(isd)-Msr wr isq +Rr ird +Lr d/dt (ird)- Lr wr irq 0=Msr wr isd +Msr d/dt (isq) +Lr wr ir