B-Institute of Electrical Drives, Power Electronics and Components S opened L find= R+L-=0 dt R R L L Calculation of c respectively if the final valueD is not reached R G=L(D)=iL Solution(S opened) genela. L R Upe respectively for 4 SIS4+t2:i,(0=ineIALB – Institute of Electrical Drives, Power Electronics and Components - 5 - S opened: UL +Uind = 0 i RL di dt L L ⋅+ = 0 iR L di dt L L ⋅ =− − = ∫ ∫ R L dt di i L L −+ = R L tc iL ln ln 1 i ce L t = − 1 τ Calculation of c1: τ 0 0 1 ( 0) − = = = = c e R U i i t D L R U c D 1 = respectively if the final value R UD is not reached: c it i 1 1 = = L L ( ) 1 Solution (S opened): general: τ t D L e R U i − = respectively for t tt t 1 12 ≤ ≤ + : i t ie L L t t ( ) = − − 1 1 τ