Next Article in Journal
Effective Fingerprint Quality Estimation for Diverse Capture Sensors
Next Article in Special Issue
Flexible Temperature Sensors on Fibers
Previous Article in Journal
Flame-Spray-Made Undoped Zinc Oxide Films for Gas Sensing Applications
Previous Article in Special Issue
Electromagnet Weight Reduction in a Magnetic Levitation System for Contactless Delivery Applications
Article Menu

Export Article

Open AccessArticle
Sensors 2010, 10(8), 7874-7895;

Non Invasive Sensors for Monitoring the Efficiency of AC Electrical Rotating Machines

Univ Lille Nord de France, F-59000 Lille, France
UArtois, LSEE, F-62400 Béthune, France
EDF-R&D-Département THEMIS Groupe R25, F-92141 Clamart Cedex, France
ADEME-SEET Department-20, Av. Du Grésillé BP 90406, F-49004 Angers Cedex 01, France
Author to whom correspondence should be addressed.
Received: 6 July 2010 / Revised: 9 August 2010 / Accepted: 12 August 2010 / Published: 23 August 2010
Full-Text   |   PDF [1457 KB, uploaded 21 June 2014]


This paper presents a non invasive method for estimating the energy efficiency of induction motors used in industrial applications. This method is innovative because it is only based on the measurement of the external field emitted by the motor. The paper describes the sensors used, how they should be placed around the machine in order to decouple the external field components generated by both the air gap flux and the winding end-windings. The study emphasizes the influence of the eddy currents flowing in the yoke frame on the sensor position. A method to estimate the torque from the external field use is proposed. The measurements are transmitted by a wireless module (Zig-Bee) and they are centralized and stored on a PC computer. View Full-Text
Keywords: magnetic field sensors; efficiency diagnosis; AC electrical motors magnetic field sensors; efficiency diagnosis; AC electrical motors
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Zidat, F.; Lecointe, J.-P.; Morganti, F.; Brudny, J.-F.; Jacq, T.; Streiff, F. Non Invasive Sensors for Monitoring the Efficiency of AC Electrical Rotating Machines. Sensors 2010, 10, 7874-7895.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top