The novel frequency control method for PV-diesel hybrid system

A novel frequency coordination control method is proposed for a PV-diesel isolated hybrid system. In the proposed coordination control strategy, the photovoltaic system (PV) are controlled by using maximum power point tracking (MPPT) method, and the sliding mode control(SMC) is designed for the output power tuning of the diesel generator system to reduce the frequency deviation. In the simulation results, the proposed frequency control method can not only reduce the frequency deviation induced by the load changes and the hybrid renewable energy fluctuation, but also assure make full use of the renewable energy. Moreover, the frequency deviation suppress effect is better than through adding battery storage installation, so the energy storage device hardware investment are reduced and environmental pollution is avoided in the process of large-scale hybrid system construction.