poster - International Conference of Agricultural Engineering

Energy cost (R$/day)
Notes that for the combinations where we had the same number of opened records, the
power suffers no change, but when it is used the frequency inverter; there is a variation of the
power consumed. It is observed that with the inverter, the consumption is reduced when have
lower energy losses, i.e. when the opened records are closer to the pump, it can be checked
by observing Figure 1. The lower energy consumption for both systems was in the combination
13, which also provided the largest difference in energy consumption, being 40% lower for the
use of a frequency inverter.
24.0
20.0
16.0
12.0
8.0
4.0
0.0
With Frenquecy Inverter without Frequency Inverter
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Combination of records opening in the lots
Figure 2 – Energy consumption for different combinations with or without frequency inverter
1.3 Conclusions
After evaluation of the pumping system in the laboratory, there was a reduction in the
cost of electricity for pumping in irrigated districts applying different levels of automation, using
the frequency inverter.
The use of the frequency inverter demonstrated to be an effective tool in reducing the
cost of electricity in pumping system for irrigated districts, in the case study, its use
represented 40% of energy savings.
1.3 References
ARAUJO, J. A. B.; SERAPHIM, O. J.; SIQUEIRA, J. A. C., Avaliação de um sistema irrigação
por aspersão com aplicação do inversor de frequência. In: ENCONTRO DE ENERGIA NO
MEIO RURAL, 5., 2004, Campinas.
BERNARDO, S., SOARES, A. A., MANTOVANI, E. C. Manual de Irrigação. 8 ed. Viçosa: UFV,
2006. 611p.
BRAGA, N.C. Curso básico de eletrônica. São Paulo: Editora Saber, 1999.v.1 140p.
MORAES;, M. J.; FILHO;, D. O.; VIEIRA;, G. H. S.; SCARCELLI, R. D. O. C. Gerenciamento
do lado da demanda no bombeamento de água para perímetro irrigado. Revista Brasileira de
Engenharia Agrícola e Ambiental, v. 15, n. 9, p. 150-165, 2011.