This paper investigates how to increase the efficiency of a photovoltaic/energy storage\ngeneration unit supplying dynamic loads by regulating and managing both the photovoltaic generator\nand the storage battery charge-discharge modes. The proposed photovoltaic/energy storage unit\nis proposed to supply an induction motor driven industrial pump with controlled speed and/or\na DC motor driven water pump. An optimal proportional-integral-derivative control based on an\nArtificial Bee Colony Optimization algorithm is used to regulate the photovoltaic generator in case of\nnormal operation or in case of maximum power point tracking (MPPT) and to also control the battery\nstorage charge discharge modes. A vector control based on the proposed optimal control is used to\nregulate the induction motor rotor speed at its low reference values needed by the industrial pump.\nFirst, a total model of the entire system is obtained. The controller performance with the proposed\nsystem is studied with both a DC motor and/or induction motor loads. Simulation results show that\nthe proposed photovoltaic/storage generator is able to supply the suggested dynamic loads under\ndifferent conditions and with good performance. Also, it is noticed that operating the photovoltaic\nbase on maximum power point tracking condition will give about 43% extra generation power than\nthe normal operation case.
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