Control strategies of a hybrid PV-diesel-battery system in different operation modes

The balance between consumption and generation is crucial for any stand alone system. The balance can be reached by acting on production, consumption or by the way of storage. Anyway, the energy fluxes have to be managed in real time. The paper presents strategies based on an adaptive scheme adjusting reactive power for the voltage control and active power for the frequency. All of devices of this hybrid system participate to control voltage and frequency without communication link. Simulation with various scenarios is carried out in order to check the efficiency of the method.