Transformerless photovoltaic system fed single phase induction motor driver for water pumping

Abstract

An example of the standalone system is that Photovoltaic energy is being used in irrigation process for pumping water from the river to fields mostly in arid region. Where rain fall is very less, supply of grid connected electricity is insufficient and watering is necessary for crop. To fulfil this blank there was a need of convenient and cheap technology which can help to overcome this issue. Due to rising oil prices, global warming and limited resources of fossil fuels have increased the need for substitution. This work includes the study of design and implementation of single phase transformerless photovoltaic system feeding a single-phase induction motor to run the centrifugal water pump and the methodology to achieve the best performance. DC-DC Boost converter is used to maximize the output voltage which was done by using MPPT and buck-boost controller by extracting the maximum power through the PV array. The DC voltage is then converter to AC output by using single phase inverter which gives the AC output to the single phase IMD. The system uses scalar control of motor in order to get the maximum output speed of the motor to run the centrifugal water pump. Computer simulations were practiced, and results are taken. All results and simulations are carried out in MATLAB Simulink.