Adaptive control scheme based maximum power point tracking controller for PV generators

This paper presents a novel method to design a maximum power point tracking (MPPT) controller for a photovoltaic generator. The main advantage of the proposed controller is the absence of oscillations in the PV output power in steady state. An adaptive control design scheme is employed to find the reference value for the photovoltaic output voltage that corresponds to the maximum power operating condition. Next, a backstepping control design method is utilized to synthesize a voltage-and-current controller to drive the photovoltaic output voltage to its reference value. The proposed design method is evaluated in simulation. The results show that the maximum power operating condition is reached smoothly. The steady state output power is maintained without oscillations.