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A PLL-Based Online Estimation of Induction Motor Consumption Without Electrical Measurement

LIAS, Université de Poitiers, 86000 Poitiers, France
Author to whom correspondence should be addressed.
Electronics 2019, 8(4), 469;
Received: 6 October 2018 / Revised: 14 April 2019 / Accepted: 17 April 2019 / Published: 25 April 2019
(This article belongs to the Section Computer Science & Engineering)
PDF [1291 KB, uploaded 26 April 2019]


This work is supported by a company wishing to develop new products in the field of energy monitoring in industry. It concerns the real-time estimation of the electrical consumption of an asynchronous motor without electrical measurement. The challenge consists of estimating the characteristic quantities of the motor (speed, torque, powers, efficiency) with only one vibratory measurement, information on the nameplate and commercial documentation available online. To obtain a real-time estimate, traditional FFT analysis is replaced by a PLL initially designed for power grid analysis. So, the second challenge is to modify this PLL for use with vibratory measurement characterized by a low signal-to-noise ratio, amplitude variations and a non-stationary behavior. A complete design and experimental tests are presented to validate the proposed approach. View Full-Text
Keywords: electrical power estimation; induction motor; vibrations analysis; PLL electrical power estimation; induction motor; vibrations analysis; PLL

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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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Doget, T.; Etien, E.; Rambault, L.; Cauet, S. A PLL-Based Online Estimation of Induction Motor Consumption Without Electrical Measurement. Electronics 2019, 8, 469.

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