Application of methodology for the adequacy of the electrical motor's power sizing : permanent and transient analysis.
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2018
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Resumo
The suitability of the motive force contributes to the efficient use of electrical energy.
On the other hand, the inadequate size of electric motors is directly connected to
increased investment and running costs. This article presents the theory and mainly the
application of a methodology for the adequacy of the motive power. The research was
conducted at the Federal University of Viçosa dairy factory. This methodology consists
in measuring motor rotation, acquiring technical information from the manufacturer’s
manual, and identifying the type of motor load. In addition, it uses the linearization
method to estimate the resistance torque in steady state. This step is achieved without
the need for using additional equipment or sending the motor to a laboratory for measuring
the torque. In this sense, the studies can be made during the production process.
Thus, this relevant methodology has the advantage of allowing the studies to be carried
out at the agro-industry facilities. After getting all the information described above, it
was possible to determine whether each motor at the factory was oversized. Then, the
suitable motor was selected according to the load type. The application of the methodology
described herein could provide around 50.6% savings in the monthly electricity
costs at the dairy factory, and an attractive internal return rate.
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Energy efficiency, Load management, Demand side management, Induction motor
Citação
RÊGO SEGUNDO, A. K. et al. Application of methodology for the adequacy of the electrical motor's power sizing : permanent and transient analysis. REM - International Engineering Journal, Ouro Preto, v. 71, p. 197-202, abr./jun. 2018. Disponível em: <http://www.scielo.br/scielo.php?script=sci_abstract&pid=S2448-167X2018000200197&lng=en&nrm=iso>. Acesso em: 15 fev. 2019.