الفهرس 
THE SWITCHEDOnly 14 pages are availabe for public view
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Abstract
The flow of current harmonics in the AC power
system is a matter, which causes interference with the
communication circuits and other equipment. System
incorporating this type of equipment is characterized by poor
power factor, which is defined as the product of displacement
factor by the distortion factor.
A conventional method of alleviating these problems is to
employ banks of capacitors and filters. In applications where
a wide range of reactive power supply is required. The
stepwise control provided by the above approach may be
unacceptable because a great number of parallel branches
may be required.
In this thesis the switched capacitors (SC) technique is
employed as a reactive power compensator (RPC) or a filter.
An experimental work is done. In this technique the
capacitors with variable impedance circuit are switched at
frequency higher than the supply frequency. These capacitors
are switched through very fast MOSFET switches.
The switching pattern of the MOSFET is implemented using
a microprocessor (M6800). This compensatory action
reduces the most significant cunent harmonics produced by
non-linear loads. The principal methods of control analysis
and of the switched capacitor circuits are presented.
Theoretical and experimental results obtained from the
prototype filter are presented, and useful conclusions are
drawn