Performance of induction motor driven submersible pump using Matlab/Simulink

This paper presents a generalized formulation for the computer-aided analysis of induction motor driving a submersible pump. A simple and more realistic MATLAB/SIMULINK model of the induction motor driven submersible pump has been developed. This paper proposes a simple algorithm to predict the performance of the system under various heads (H) at a given voltage (V) and frequency (f) which reflects the existing situation in the industrial as well as the agricultural sector. The discharge (Q) of the submersible pump is a function of head, torque, speed and efficiency. This paper uses variable efficiency instead of static one in the modeling of the pump. In order to predict the efficiency of the pump at the particular head and discharge "polyfit" function is used. Using this function an accurate model is developed to predict the performance of induction motor driven submersible pump.