Implementation of solar photovoltaic array and battery powered enhanced DC-DC converter using B4-inverter fed brushless DC motor drive system for agricultural water pumping applications

Sathish Kumar Shanmugam,Gowtham Palanirajan,Meenakumari Ramachandran,Krishna Kumar Kanagaraj,Senthilkumar Arumugam

doi:10.21595/jve.2018.19449

Abstract

The proposed research involves, an implementation of solar photovoltaic array and battery powered enhanced dc-dc converter using B4-inverter fed brushless dc motor drive system for agricultural water pumping applications. It consists of step up and step-down converter, DC-link module. DC-link switching is achieved by reduced ripple voltage which results in improved quality of obtained output power. The Three Port Converter has been proposed and operated in unidirectional and/or bidirectional way simultaneously, for achieving an inherent dual voltage and power flow control. Switch count makes the system more cost effective. An excellent tracking performance under dynamic condition with negligible oscillations around optimum operating point is achieved. Optimally selecting the initial value of duty ratio and its perturbation size offer soft starting of BLDC motor by slowly increasing the DC-link voltage of VSI. A simulation model of solar photovoltaic array and battery powered enhanced DC-DC converter is developed and its performance is analysed for various operating conditions.

Highlights

IntroductionOne of the most popular applications of the PV energy utilization is water pumping system driven by an electric motor
The proposed system includes PV powered DOBB converter, battery powered bidirectional buck-boost converter act as backup supply for brushless DC motor (BLDC) motor operates under demand condition and B4-Inverter fed BLDC motor
A new method of torque control has been utilized by controlling torque ripple during sector to sector commutations of BLDC motor

Summary

Introduction

One of the most popular applications of the PV energy utilization is water pumping system driven by an electric motor. In this application due to costs of PV equipment’s and water pumps are expected to decrease more and more over the few years, it is no wonder that the demand for the PV power becomes widespread. These factors can make PV water pumping systems more economic in the near future. The advantages of using water pumps powered by PV system include low maintenance, ease of installation and reliability [2]

Methods

Results

Conclusion