INDUCTION MOTOR

77

LOW WITH LOW FRE(J EXCITE 00 = E YO--
SPEED INDUCTION MOTOR ?UENCY SYNCHRONOUS IN SECONDARY, D FOR UNITY POWER FACTOR 300 Z0=.1 -*- .3j 02 -.54f Z, = .1 +• .33 05 Z2 = .02 + .2j SYNCHRONOUS

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1400 1300

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IMPS
600. .550. 500
1200 1100 1000 .900. .800. 700

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FIG. 29. — Load curves of high-excitation Induction motor concatenated with synchronous, at unity power-factor excitation.

LOW WITH LOW FRE< CONST 0o =
..... _- ......... - V —
SPEED INDUCTION MOTOfl ^UENCY SYNCHRONOUS IN "ANT EXCITATION, 6=1.7 500 Zo^ .1 +.33 .02 - .545 Zt*= .1 4- .3^ .05 Z2=.024-.2J SYNCHRONOUS
t SECONDARY
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100
AMPS.
-450. _400, _350 -300. -.250. -200. J50. _100 _50.

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0 KW

FIG. 30.—Load curves of high-excitation induction motor concatenated with
synchronous, at constant excitation.