Boost Converter Control of PV System Using Sliding Mode Control With Integrative Sliding Surface
Roberto Sussumu Inomoto, José Roberto Boffino de Almeida Monteiro, Alfeu J. Sguarezi Filho
Abstract
Maximum power point tracking (MPPT) is a technique to find the maximum power from a photovoltaic (PV) system, however, in fast variation environment conditions it loses performance. This article proposes a sliding mode (SM) controller applied to the dc–dc boost converter of a PV system to improve performance. The proposed controller consists of two control loops: input voltage control loop oriented by MPPT algorithm to calculate the inductor current; and current control loop to calculate the duty cycle of the frequency switch. Experimental results using a solar kit are presented to verify its performance and results are compared with lead-lag and SM plus proportional–integral (SMPI) controllers showing a reduction of steady-state error, overshoot, and settling time.