A hybrid wind-solar-storage energy generation system configuration and control

摘要

This paper proposes a standalone distributed hybrid power system which consists of solar power, wind power, battery storage and the load. A control strategy is introduced to maximize the simultaneous energy harvesting from both renewable sources. The controller results in five contingencies considering the level of power generation available at each renewable energy source and the state of charge in the battery. Power converters interface the source with a common DC bus. The interfacing converter is controlled either as a current or a voltage source. A supervisory controller is proposed to accomplish the source type allocations and balance of energy in the operating contingencies. Simulation results demonstrate accurate operation of the supervisory controller and functionality of the maximum power point tracking algorithm in each operating condition both for solar and for wind power.