E-COBRA: Integration of Wind Turbine Technology in Electric Car Power Banks for Sustainable Transportation

Abstract

Dependence on non-renewable energy remains a major challenge, despite the growing popularity of electric
cars, as most electricity sources come from coal. In response, this paper proposes E-COBRA, a wind turbine
system with a magnetic rotor as a renewable electricity source that can extend the battery life of electric cars.
Functioning as a power bank, E-COBRA utilizes wind energy while the car is moving and converts it into
electricity to support the battery. The design of the E-COBRA follows the principles of aerodynamics, with an
installation on the roof of the electric car to capitalize on the kinetic energy from the wind hitting the car. The
lift generated by the air on the roof of the electric car turns a wind turbine. Inside the generator, the mechanical
energy is used to spin a magnetic rotor inside a stationary coil of stator wire, changing the magnetic field and
inducing electricity in the wire. This process generates electricity that is conducted through a cable and
connected directly to the car's charging port. This paper compares the design of using a diffuser-increased wind
turbine (DAWT) with a vertical axis wind turbine (VAWT) for the E-COBRA system. The comparison shows
that the DAWT produces the largest energy, electrical power output of 2.2 kW at a car speed of 71.2 km/h. This
technology not only reduces reliance on non-renewable energy but also offers a significant solution for
increasing the efficiency and travel range of electric cars. As such, this approach represents a significant
development in sustainable transportation solutions.