Abstract:
A statistical analysis of 10 minutes interval wind data at 20 m height for different
location of Bangladesh has been made. The data has been shorted in sequence of
appropriate frequency as hourly, daily and monthly mean wind speed. The gusty wind
behaviour has also been analyzed. The data has been presented and analyzed in velocity
friquency bar graph, energy bar graph, velocity duration curve etc. Two important
paramets Weibull shape factor “k” and Weibull scale factor “c” have been obtained from
the data. Weibull function F(v), Weibull probability density function f(v), velocity
duration function S(v) and available energy in the wind (wh/m2) have also been obtained
from the wind data.
This paper also presents a way of determining the long lasting strongest gusts at the
Sitakunda. While searching the wind power potential in the windy sites of Bangladesh for
electricity generation, it has been found that Sitakunda have some unusual wind
characteristics in August and September. In the irregular region of wind speed, the value
of Weibull shape factor and Weibull scale factor was out of range. During analysis of
wind data of Sitakunda, a long lasting strong gusty wind was obtained there.
Then a horizontal axis wind turbine has been designed for the selected site Kuakata. For
the simulation of power in replaced of designed wind turbine a remote controlled motor
has been coupled with a generator. The motor speed has been controlled by PWM signal
in its ten steps. A couple microcontrollers have been used for the simulation. High radio
frequency remote have been designed to control the motor. At any step, the motor RPM,
generator output voltage and switch position has been digitally displayed in the LCD
display screen.
