Science Journal of Electrical & Electronic Engineering

February 2013, Volume 2013, ISSN:2276-6340

© Author(s) 2013. This work is distributed under the Creative Commons Attribution 3.0 License.

Research Article


Induction Electric Motors Optimization Aiming Energy Efficiency in Industrial Applications

Author: Mário Cesar E. S. Ramos1, Hédio Tatizawa2 and Mário Cesar G. Ramos3

1 & 2University of São Paulo- Brazil
3University of Mogi das Cruzes - Brazil

Accepted 24 January, 2013; Available Online 13 February 2013

doi: 10.7237/sjeee/284


A methodology for assessment and optimization of induction electric motors aiming energy conservation is described, which works by means of replacing older motors with high-efficiency ones. The electric motor is an end-use equipment which is strongly present at industry, being subject to replacements that may have satisfactory results when the diagnosis is carried out in a consistent way, in accordance to coherent validation procedures. The adopted motor replacement methodology included an initial study, by means of measurements of electrical parameters. Afterwards, by using particular simulation software, operating conditions of the electric motor and the expected savings accruing from the use of high-efficiency motors were estimated. When necessary, the motor resizing analysis provides the best rated power for the drive. The motor substitutions carried out in this motor drives efficiency improvement program resulted in yearly savings amounting to 720 MWh.

Keyword:Demand Reduction, Energy Conservation, Energy Diagnosis, High-Efficiency Motors, Induction Machines, Measurement and Verification, Maintenance Costs, Motor Resizing, Power Quality, Simulation Program.