电工学实验教程

“”“”“”GALGALAA0∆A∆A=A-A0γγ0AA∆×∆AααmAA∆γ0AA∆=α0AAmααγα0AAm=±0.51220±0.83γα0AAm=±0.51250±2.08~~α2-1RgIgRS1RS2I+IRgIgRgIgIRS1Ig×RgIIgRS1IgIRS1RS1RgRS1+RS2RgIgRS12-2+IgRgRS2UI2-12-2RgIgRS1RS2U+URgIgRgIgURS1U=Ig×Rg+RS1IgURS1RS1Rg2-3ERgRX++RRXRR=U/IgRgRX2-4+RgRR0R′0ERX2-3+IgRgERRXI=U/Rg+R+RXURXIRXRX=0RX∞RXR02-5a1823451232-5b2I4α=KI225%~100%+**iu∫=TPuidtTW012-6PW=UI**I1500.5A1A30060075UPW=UIcosφφui“”2-7“”****L1L2u12+L3u32+i2i1i3L2L1L2L3L2L1L3u1u2u32-8u1u2u3uip1=u12i1p2=u32i3p=p1+p2=u12i1+u32i3p=(u1-u2)i1+(u3-u2)i3=u1i1+u3i3-u2(i1+i3)=u1i1+u2i2+u3i3P=U1I1cosφ1+U2I2cosφ2+U3I3cosφ3“”“”