Abstract
Innovative energy conversion device has been developed for efficient wind energy utilization. This device has co-axial configuration and the rotational speed of the turbine can be kept constant by controlling rotational torque by Lorentz force with electrical power generation. For larger load resistance, rotational torque increases due to increase in azimuthal component of electric current and friction force by Lorenz force acting radially inner direction. On the other hand, rotational torque decreases for smaller load resistance. Therefore, even when torque increases with increasing wind velocity, the turbine can be operated at a constant rotational speed by controlling load resistance with conversion of wind energy into electric power.
