Abstract:
Wind generation systems generate variable voltages at variable frequency because of variable wind speeds. Wind turbines exhibit non linear power characteristics at load variations and have power peak at certain speed of the wind turbine. Because of variable nature of output power at variable wind flow' speeds, it is not practical to use the power output directly to any
load . Rather. the Variable a power from the wind generator is stored in a storage battery using an interface converter The battery then supplies power to the desired load or utility using an inverted. We aimed at constructing an interface converter that would always extract maximum power from the wind generator within the battery capacity limit. A lead acid battery wnth a nominal voltage of 12V will be charged according to IEC 60896 . . -: Ie ua 'tng the maximum po\\'er from the wind generator, if the main battery becomes unable to store the whole power, the rest power will be diverted to a secondary storage
battery. In case of low wind speed, the secondary storage power may be pumped to the main
battery if situation permits. Firstly we proposed a scheme which will provide all necessary
protections to safeguard different components in the whole system under abnormal
conditions. New topology of buck boost operation with a common ground and novel ideas of
driving floating power MOSFETs, will be incorporated in the converter design. This report
includes the test results of charging a 12V, 70Ah Lead Acid Battery at various charging states with our proposed circuitry.
Description:
This thesis submitted in partial fulfillment of the requirements for the degree of B.Sc in Electrical and Electronic Engineering of East West University, Dhaka, Bangladesh.
