Next Article in Journal
Hyperparameter Optimization Method Based on Harmony Search Algorithm to Improve Performance of 1D CNN Human Respiration Pattern Recognition System
Next Article in Special Issue
Cross-Machine Fault Diagnosis with Semi-Supervised Discriminative Adversarial Domain Adaptation
Previous Article in Journal
Depth-Dependent High Distortion Lens Calibration
Previous Article in Special Issue
A Novel Approach for Acoustic Signal Processing of a Drum Shearer Based on Improved Variational Mode Decomposition and Cluster Analysis
Open AccessArticle

Degradation Monitoring of Insulation Systems Used in Low-Voltage Electromagnetic Coils under Thermal Loading Conditions from a Creep Point of View

by Kai Wang 1,2,3,*, Haifeng Guo 1,2,3,4,5, Aidong Xu 1,2,3 and Michael Pecht 6
1
Key Laboratory of Networked Control Systems, Chinese Academy of Sciences, Shenyang 110016, China
2
Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
3
Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
4
University of Chinese Academy of Sciences, Beijing 100049, China
5
Liaoning Institute of Science and Technology, Benxi 117004, China
6
Center for Advanced Life Cycle Engineering, University of Maryland, College Park, MD 20742, USA
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(13), 3696; https://doi.org/10.3390/s20133696
Received: 4 June 2020 / Revised: 26 June 2020 / Accepted: 27 June 2020 / Published: 1 July 2020
(This article belongs to the Special Issue Sensors for Fault Diagnosis and Prognostics)
Electromagnetic coils are a key component in a variety of systems and are widely used in many industries. Because their insulation usually fails suddenly and can have catastrophic effects, degradation monitoring of coil insulation systems plays a vital role in avoiding unexpected machine shutdown. The existing insulation degradation monitoring methods are based on assessing the change of coil high-frequency electrical parameter response, whereas the effects of the insulation failure mechanisms are not considered, which leads to inconsistency between experimental results. Therefore, this paper investigates degradation monitoring of coil insulation systems under thermal loading conditions from a creep point of view. Inter-turn insulation creep deformation is identified as a quantitative index to manifest insulation degradation changes at the micro level. A method is developed to map coil high-frequency electrical monitoring parameters to inter-turn insulation creep deformation in order to bridge the gap between the micro-level and macro-level changes during the incipient insulation degradation process. Thermally accelerated tests are performed to validate the developed method. The mapping method helps to determine the physical meaning of coil electrical monitoring parameters and presents opportunities for predictive maintenance of machines that incorporate electromagnetic coils. View Full-Text
Keywords: electromagnetic coil; insulation degradation monitoring; high-frequency electrical parameter; creep deformation; accelerated testing electromagnetic coil; insulation degradation monitoring; high-frequency electrical parameter; creep deformation; accelerated testing
Show Figures

Figure 1

MDPI and ACS Style

Wang, K.; Guo, H.; Xu, A.; Pecht, M. Degradation Monitoring of Insulation Systems Used in Low-Voltage Electromagnetic Coils under Thermal Loading Conditions from a Creep Point of View. Sensors 2020, 20, 3696.

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