Where P is the index of the output neurons, opj is the
measured output of the outputs and tpj is the desired output of
the output neurons. In this work, the connection weights are
updated by the following formula:
3 Simulation results
The MATLABSIMULINK software is used for simulation of
the photovoltaic water pumping system. The system was
simulated to verify the functionality and performance of the
proposed ANN controller based on MPPT of water pumping
system and to quantify how the proposed controller increased
the system efficiency compared with directly connected
system under different solar insolation levels. The complete
simulation model of the system consists of a PV model