1、感应电动势与主磁通 空载运行时,忽略iR1和eo1≈-1设:中= ) sin ot 0 M, op sin(0)t-90°)= E sin(Ot-π/2) do ON,m sin(at-90)=E,m sin(ot-T/2) 感应电动势e1和e2均滞后于的电角度90°,其有效值为 E1=hm_ON④n2mM④ m=444N1 2 E2mON2④n2mN2 E 2 2 2=444N2① E和E2的相量表达式 E1=-1444N①nE2=-1444N2④10 1、感应电动势与主磁通 空载运行时,忽略i0R1和e1σ 1 1 u −e sin m 设: = t 1 1 1 1 d sin( 90 ) sin( π / 2) d m m e N N t E t t = − = − − = − 2 2 2 2 d sin( 90 ) sin( π / 2) d m m e N N t E t t = − = − − = − 感应电动势e1 和e2 均滞后于φ 的电角度90°,其有效值为 m m m m f N E N f N E 1 1 1 1 1 4.44 2 2π 2 2 = = = = m m m m f N E N f N E 2 2 2 2 2 4.44 2 2π 2 2 = = = = E1和E2的相量表达式 m E fN 1 44 1 = −j4. m E fN 2 44 2 = −j4