Solar PV Based Electric Vehicle Charging Station Using MATLAB/Simulink

Electric vehicle charging stations built on solar PV face two problems that rarely get addressed together. The first is MPPT quality: fixed-step algorithms like Perturb and Observe cannot stop oscillating at steady state, so they waste a small but consistent fraction of available energy indefinitely. The second appears when a Thermoelectric Generator is added for waste heat recovery — connecting TEG output to the same battery as the PV charging path generates transient current spikes that destabilize charging. This paper takes both problems on in a single MATLAB/Simulink simulation. A 25-rule Mamdani Fuzzy Logic MPPT controller replaces the conventional fixed-step algorithm; it adjusts the Boost Converter duty cycle based on the power-voltage slope and its rate of change, and the result is a single startup transient followed by zero steady-state ripple. The Boost Converter output settles to roughly 715 V under nominal irradiance and dips briefly to around 695 V when an irradiance step hits at t = 1.0 s, recovering within a fraction of a second. The TEG feeds a dedicated auxiliary battery through a blocking diode rather than sharing the main battery terminal, which removes the cross-source interference entirely. Five simulation outputs — PV power, converter voltage, main battery SOC, auxiliary battery SOC, and combined battery current — all confirm stable and clean operation across the full two-second test window including the disturbance.