Özet:

This work deals with the control of a photovoltaic pumping system. It is based on an induction motor, and direct torque control (DTC) is applied. The method adopted is based on the instantaneous space vector theory. By optimal selection of the space voltage vectors in each sampling period, DTC archives effective control of the stator flux and torque. The most important advantage of this method is its rotor position free control system. To improve photovoltaic (PV) system performances, Perturb & Observe maximum power point tracking (MPPT) algorithm has been used to achieve sufficient power to operate the water pumping system under variable conditions. Through this work, it is aimed to obtain a simple and low-cost system for the photovoltaic water pumping systems with rapid tracking of the maximum power. The proposed system with DTC and MPPT strategy not only improves system performance but also extends the working hours of solar photovoltaic systems. Simulation of the adopted method is also presented.

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