Abstract
A robust sliding-mode controller is proposed for maximum power point tracking in photovoltaic power generation system. Thanks to using hysteresis quantized inputs, the chattering phenomena, as the main weakness of the sliding mode controllers, is removed. Also, the external disturbances, model uncertainties, environmental and load variation effects are attenuated in the proposed controller scheme. The upper bound of the disturbance is assumed to be unknown and is estimated with an appropriate adaptive rule. Using the Lyapunov theory, the stability of the proposed scheme is verified and analytically proved. MATLAB simulation results confirm that the undesired effects of disturbances and chattering are simultaneously removed, as is proved in the theoretical analysis.
Published Version
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