=L1+l2 dt d i LI =uC-GLI+iLri+us B 2 dt uc-(i,+ucR(is+ilz L2 u C 0 C LI RI 0 dt L2 R R1+R,‖L2 R dt 2 L2                        − +                             + − − − − − − =                 s s L L C L L C i u L R L L i i u L R R L R L L R L R L C C d t d i d t d i d t d u 2 2 2 1 2 1 2 1 2 2 1 2 1 1 1 1 1 2 1 1 0 1 0 0 1 1 1 1 0 L1 L2 C i i dt du −C = + C L L S L u i i R u dt di L = − 1 + 2 1 + 1 1 ( ) ( ) ( ) 1 2 1 2 2 2 2 C L L S S L L u i i R u R i i dt di L = − + + − +  C i   uL1 R i