Control scheme of three-level H-bridge converter for interfacing between renewable energy resources and AC grid

Abstract

This paper presents a control strategy of multilevel converters for integration of renewable energy resources into power grid. The proposed technique provides compensation for active, reactive, and harmonic current components of grid-connected loads. A three-level H-bridge converter is proposed as the interfacing system between renewable energy resources and utility grid. High performance of the proposed technique is indicated with injection of maximum available power from renewable energy resources to the power grid, increases power factor of the utility grid, and reduces the total harmonic distortion (THD) of grid current through Matlab/Simulink under proposed operating conditions.