الفهرس 
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Abstract
The motors being used on modem industrial systems are
becoming increasingly large in size . Starting of these large
motors , especially when working on isolated alternator , produces
a transient voltage depression that can substantially reduce the
motor output torque while severely influencing the operation of
any connected load .
This study highlights the use of shunt capacitors to improve the
characteristics of isolated network during the starting of large
induction motor .
,
The analysis of the isolated system is carried out, firstly without
using the shunt capacitors and secondly with different sizes of
shunt capacitors . The alternator voltage variation, motor current
characteristics, capacitor characteristics and dynamic
performance are analyzed at different values of alternator field
current.
The suitable value of the required shunt capacitor is obtained to
maintain the output voltage at the rated value during both starting
and running conditions of the induction motor .
The capacitor value is determined by two methods, the first is
by compensating the alternator reactive volt ampere, while in the