1. Introduction
Wind power is the conversion of wind energy into a useful forms of energy such as wind pumps,wind mills,
wind turbines etc. The DFIG which is used for variable wind speed operations can be used for battery charging. The
variable speed DFIG has several advantages instead of fixed speed machine like: reduce mechanical stress,
dynamically compensate torque, reduce converter rating and reduce cost and losses in result of that an improved
efficiency [4].