MOTOR DE INDUÇÃO COM CONVERSOR DE FREQUÊNCIA CONVENCIONAL ACOPLADO EM SISTEMA FOTOVOLTAICO OFF-GRID PARA IRRIGAÇÃO

Abstract

Currently, direct current pumps are used, which can have high maintenance costs, difficulty in replacing parts and barriers in their commercialization. Given this, it becomes a priority, the study of the technical feasibility of using conventional frequency converters, normally used in industrial applications, in water pumping systems with photovoltaic technology. Therefore, the work pays attention to the technical feasibility of using conventional frequency converters, normally used in industrial applications, in water pumping systems with photovoltaic technology. Currently, DC pumps are used, but they have high maintenance costs, difficulty in replacing parts and barriers in their commercialization. Thus, the present research uses a prototype that allows simulating a closed circuit for pumping and storing water for irrigation, as an interesting possibility, the replacement of special inverters, used specifically in photovoltaic pumping systems, by traditional frequency converters. These are conventional equipment manufactured on a large scale, diversity of models, wide power range, low cost and with functions that allow them to be adapted for use in photovoltaic pumping systems. Additionally, its insertion in photovoltaic systems makes it possible to use conventional motor pumps that exist in great variety in the market. This arrangement gives the system a range of possibilities: installation of systems with high powers, different types and manufacturers of pumps, easy maintenance and replacement of parts. So, this project seeks to contribute to the diffusion of pumping systems from photovoltaic solar energy, by reducing the return on investment time, due to the replacement of specific pumping systems for use with photovoltaic energy, by an alternative of lower cost, using frequency converters and common electric pumps.