Control Strategy of DC Micro-Grid Photovoltaic Power Generation Based on Adaptive Sliding Mode
Aiming at the problems of uneven illumination of PV power generation end and the uneven operation of the micro grid system caused by the mutations during the running process of the dual photovoltaic dc micro grid,this paper proposes a dual photovoltaic dc micro mesh finite time nonsingular adaptive sliding mode control method,and by using lyapunov stability theory,the stability of the method is proved.The method is based on two photovoltaic power generation units output voltage and current changes to build a controller of state variables.Combining with the finite time nonsingular sliding mode control strategy,two photovoltaic power generation units output voltage are equaled quickly and reached the set value,thus reducing the load mutation or busbar voltage fluctuation caused by uneven illumination.The simulation results show that this method can effectively solve the problem of bus voltage fluctuation caused by uneven illumination and sudden load,and is of sound anti-interference ability.
dc microgridsliding mode controlself-adaptationlimited time
NETL
NSTL
万方数据
维普
