Next Article in Journal
Towards Network Lifetime Enhancement of Resource Constrained IoT Devices in Heterogeneous Wireless Sensor Networks
Previous Article in Journal
A Fuzzy Virtual Actuator for Automated Guided Vehicles
Open AccessArticle

Fluid Degradation Measurement Based on a Dual Coil Frequency Response Analysis

1
Department of Automatic Control, Electrical and Electronic Engineering and Industrial Informatics, Universidad Politécnica de Madrid, E-28006 Madrid, Spain
2
Department of Hydraulic, Energy and Environmental Engineering, Universidad Politécnica de Madrid, E-28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(15), 4155; https://doi.org/10.3390/s20154155
Received: 17 June 2020 / Revised: 17 July 2020 / Accepted: 23 July 2020 / Published: 26 July 2020
(This article belongs to the Section Electronic Sensors)
Electrical industry uses oils for cooling and insulation of several machines, such as power transformers. In addition, it uses water for cooling some synchronous generators. To avoid malfunctions in these assets, fluid quality should be preserved. To contribute to this aim, a sensor that detects changes in fluid composition is presented. The designed sensor is like a single-phase transformer whose magnetic core is the fluid whose properties will be measured. The response of this device to a frequency sweep is recorded. Through a comparison between any measurement and a reference one corresponding to a healthy state, pollutants presence, such as water in oil or salt in water, can be measured. The performance of the sensor was analyzed through simulation. In addition, a prototype was built and tested measuring water concentration in oil and salt content in water. The correlation between pollutant concentration measured with the sensor and known pollutant concentrations is good. View Full-Text
Keywords: degradation; fault diagnosis; frequency response analysis; predictive maintenance; oil insulation; capacitive sensors; magnetic sensors degradation; fault diagnosis; frequency response analysis; predictive maintenance; oil insulation; capacitive sensors; magnetic sensors
Show Figures

Figure 1

MDPI and ACS Style

Guerrero, J.M.; Castilla, A.E.; Sánchez-Fernández, J.Á.; Platero, C.A. Fluid Degradation Measurement Based on a Dual Coil Frequency Response Analysis. Sensors 2020, 20, 4155.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop