A Step-by-step Full-Order Sliding Mode Controller Design for Standalone Inverter-Interfaced Cleaner Renewable Energy Sources

•Lower performance of existing controllers for inverters-interfaced renewable energy resources.•Requirement for extra electrical equipment for improving power quality leading to air pollution.•Implementing a full-order sliding mode controller via outer voltage and inner current loops.•Achieving the desired low harmonic output voltage under uncertainties for the inverters.•Mitigating the need for extra harmonic compensators resulting in less environmental effects.