Solar energy exploitation enhancing driving autonomy of electric vehicles

A complete system is proposed in this paper in order to efficiently control a PV system incorporated into an electric vehicle´s roof. Employed Maximum Power Point Tracking (MPPT) algorithm is based on the well-known Perturb & Observe (P&O) technique properly modified so as to achieve fast transient response ensuring stability. Solar irradiance variations are the most significant challenge concerning such applications thus controller speed constitutes a beneficial factor. Used converter topology is a Flyback converter adjusting different voltage levels between battery and PV output voltage. Simulation results have been validated by experiments carried out on a solar system mounted on a battery-electric vehicle´s roof.