本例中负载最重为过载150%时,功率因数最低 为0.8,此时: 151151.5×115115 1.5 52247( 2.20424.4210 52.247 0=tan 26.595° 5×115/1.653 V(.5×69.570)+52.2472=116704(4) i2=Z2·i1=06032×116704=70.396) 152+70.3962-2×c090+26.595)×115×70396=159465(7) 可见输出电路此时降压严重本例中负载最重为过载150%时，功率因数最低 为0.8，此时： (A) Z Z I I L C L C 52.247 4.4210 115 2.2042 115 115 1.5 115 1.5 − =  − =  − =     o 26.595 1.5 115 1.653 52.247 tan 1 =  = −  ( ) ( ) ( ) u Z I (V ) I I I I A L L L L R L C 0.6032 116.704 70.396 1.5 69.570 52.247 116.704 2 2 2 ' 2 =  =  = = + − =  + =       u ( ) (V ) i 115 70.396 2 cos 90 26.595 115 70.396 159.465 2 2  = + −  +   = 可见输出电路此时降压严重