Abstract:
For stable operation of an invertor, a certain
amount of reactive power is necessary. The count of reactive
power depends mainly upon the overlap angle y . As a matter of
fact, this overlap angle is affected by various system pore-
meters and load conditions.
In this dissertations the effect of various system
parameters and load conditions on reactive power demand has
been studied. it also deals with the use of capacitors and
filter circuits for reduction of commutation engi. and hence
the reactive power consumption. Relative advantages and dis-
advantages have been assessed. flifferent aspects of commutation
failure and protection against it has been discussed. The effect
of faults on the s.c. side on the reactive power demand has
been studied. The variation of current in an invertor under
different transient situation. has been analysed. In each case
a suitable example has been assumed and analysed
