Mathematical Model for Performance Prediction of SPV Powered DC Irrigation System

Authors

  • Joshi Sourabha
  • Basanagouda F. Ronad
  • Suresh H. Jangamshetti

Abstract

Selection of solar powered DC irrigation system is difficult for different sites with varying solar radiation and field conditions. Large numbers of SPV irrigation pumps are already installed; however successful implementation is yet to be achieved. One of the reasons behind this issue is unavailability of performance details. This indicates the need for development of an effective mathematical model of SPV irrigation system, which can predict the performance results by simulation. This paper presents development of mathematical model of SPV powered DC irrigation system using MATLAB/Simulink. Model consists of solar array, DC motor, centrifugal pump and hydraulic pipe network. Model of SPV unit is developed using photo current, saturation current, reverse saturation current and output current. DC motor is modeled using speed, torque and efficiency. Hydraulic power output equation is used to build a centrifugal pump and pipe network is modeled using hydraulic head and loss equations. Further, all the sub models are integrated to establish the complete model. The proposed model is tested with the solar radiation data of BEC campus and comparative analysis is carried with experimental results of the SPV irrigation pumps installed in BEC Energy Park. It is observed that the experimental and simulation results closely match with each other. It is concluded that, developed mathematical model of SPV irrigation pump can be effectively used to predict the performance of the SPV pump details for varying climatic conditions and for different sites.

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Published

2020-02-09

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Section

Articles