分太少了Ud=0.9*220*[(1+Cos60)/2] =198*[1.5/2] =198*0.75 =148.5V Id=148.5/10 =14.85A Itav=0.5*Id=0.5*10.85=7.43A 平均值 It=0.785Id=0.785*14.85=11.66A 有效值 Idtav=[(180-60)/360]*14.85=1/3*14.85=4.95A二极管电流我再查下资料