Cycloconverter Controlled Isolated Wind Turbine Ganerator System With Electrical Double Layer Capacitor

Abstract

In recent years wind turbines have accepted an alternative for electrical power generation by
coal and nuclear plants. The recent design of wind turbine is an improved form of the
traditional wind mill. In past centuries the original use of wind turbine was in mechanical
applications. In 700 AD Persian windmill, which was used to grind grain and pump water
was the one of the first wind turbines. It has vertical-axis that could turn in one direction only
and if the wind blew in the opposite direction, it would stop completely which resulted in an
extremely low efficiency. Actually this paper is a review of control issues of wind turbine
systems. These control issues like turbine speed estimation, control of breaking chopper,
generator torque control, pitch angle control, dc/dc converter control, wind turbine to grid
converter controlled and described different control issues for operation a complete wind
farm based on(PMSG).In this paper different improvements and researches on WTS are
explained in brief and contains the information about different types of wind turbines and
wind generators. The paper describes electrical double layer capacitor (EDLC), its
construction, principle of operation and application with wind turbine system. How one can
control power, voltage and frequency of output electrical energy of wind turbine is explained
in this paper. It explains how a cycloconverter can maintain constant frequency output in
single stage of power conversion.