In my Final Project I made a comprehensive study of wind energy application and
designed and selected the main parts of a medium size wind power system.
The first part of my Final Project gives an overview about the history of wind
energy and wind is defined here as an energy carrier medium and here can be read how
wind is competitive with other power sources. The Chapter two is about the wind turbine
technology, here I wrote about the main types of wind turbines and the components of
horizontal-axis wind turbines. In Chapter three the technical, geographical and
economical background of the usage of wind energy in Europe and in Hungary is studied
and here can be seen that the European and Hungarian trends are different in this area. In
Chapter four I wrote about the electrical background of wind power systems including
the wind energy conversion into electrical energy. This first part can be considered as the
theoretical background of wind energy application.
In the second part of my thesis the main section of my Final Project starts. Here
the main parts of a horizontal-axis wind turbine are designed and selected. The main parts
of the system are developed and modeled in Matlab/Simulink environment, like the
battery charger, PWM controller and the wind turbine. The most interesting part of this
project is the battery charging system because the batteries are built together with DC/DC
converters that can limit the maximum cell voltage and the depth of discharge with PID
controllers. I made an approximate calculation about the pay-back time of the system and
it turned out that in Hungary a good wind power project can be paid off in five year.