The usage of air flow to rotate wind turbines and thereby turn electric generators is known as wind energy. It is a variable source of energy since there is considerable fluctuation in the amount of power generated over short time scales. Thus, it is used in conjunction with other electric power sources in order to provide steady electrical supply. It can also be connected to batteries. Wind energy is a renewable source of power, which has an extremely low global warming potential per unit of electrical energy generated. Wind energy converter, or wind turbine is a device which converts wind's kinetic energy into mechanical energy. This book is a valuable compilation of topics, ranging from the basic to the most complex advancements in the field of wind energy. It is appropriate for students seeking detailed information in this area as well as for experts.