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Reduction of Induction Motor Energy Consumption via Variable Velocity and Flux References

1
Instituto Politecnico Nacional, ESIME Culhuacan, Mexico City 04440, Mexico
2
Escuela de Ingeniería y ciencias, Tecnologico de Monterrey, CCM, Mexico City 14380, Mexico
*
Author to whom correspondence should be addressed.
Avenida Santa Ana 951, Coyoacan 04440, CDMX, Mexico.
Calle del Puente 222, Tlalpan 14380, CDMX, Mexico.
Electronics 2019, 8(7), 740; https://doi.org/10.3390/electronics8070740
Received: 31 May 2019 / Revised: 19 June 2019 / Accepted: 26 June 2019 / Published: 29 June 2019
(This article belongs to the Section Systems & Control Engineering)
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Abstract

Induction motors (IM) have been a fundamental part of industrial applications for over a century and the number of their applications continues to expand. A significant amount of the world’s total energy expense is consumed by this kind of motor. Hence, it is very important to increase the energy efficiency of these machines. Due to its good performance, field-oriented control (FOC) is the most common strategy to control IM. FOC requires references for stator current and rotor magnetic fluxes. For velocity regulation, a velocity reference is used instead of a stator current reference. However, at motor start-up or when a change of torque is required, it would be convenient for these references to be variable in order to reduce energy consumption. In this work, it is shown that this is indeed the case, and a technique to find optimal time-variable references for stator currents and magnetic rotor fluxes to reduce energy consumption is proposed. It is shown that, depending on the mechanical load, an energy reduction of 20–45% can be achieved. View Full-Text
Keywords: energy efficiency; induction motor control; field-oriented control; optimization applications energy efficiency; induction motor control; field-oriented control; optimization applications
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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MDPI and ACS Style

Resa, J.; Cortes, D.; Marquez-Rubio, J.F.; Navarro, D. Reduction of Induction Motor Energy Consumption via Variable Velocity and Flux References. Electronics 2019, 8, 740.

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