NDLI: In-situ health monitoring of power converter modules for preventive maintenance and improved availability

Content Provider	IEEE Xplore Digital Library
Author	Aliyu, A.M. Chowdhury, S. Castellazzi, A.
Copyright Year	2015
Description	Author affiliation: Univ. of Nottingham, Nottingham, UK (Aliyu, A.M.; Chowdhury, S.; Castellazzi, A.)
Abstract	This paper proposes an on-board methodology for monitoring the health of power converter modules in inverters driving inductive loads such as induction motors. The ability to keep regular track of the actual degradation level of the modules enables the adoption of preventive maintenance, reducing or even eliminating altogether the appearance of failures during operation, significantly improving the availability of the equipment. The novelty and originality of the solution proposed here is twofold. First, health monitoring routines are carried out during non-operation phases of the inverter. Secondly, only the circuitry already implemented in the inverter for nominal operation is made use of, without any additional components, apart from an analogue measurement circuit. Degradation is tracked by means of thermal impedance measurements, processed in the form of structure functions for greater resolution and accuracy of information. Vector control is used to supply the heating current from the inverter's DC source, while making sure that the motor load remains at a standstill. The use of vector control gives the advantage of using the existing control software. Experimental results showing the identification of degradation using structure function and thermal transient measurement extracted from the integration of the inverter and measurement circuit are presented in this work.
Starting Page	1
Ending Page	10
File Size	939152
Page Count	10
File Format	PDF
e-ISBN	9789075815221
DOI	10.1109/EPE.2015.7309348
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-08
Publisher Place	Switzerland
Access Restriction	Subscribed
Rights Holder	EPE Association and IEEE
Subject Keyword	Temperature measurement Degradation Measurement Induction motors Current measurement Multichip modules Inverters Maintenance Reliability Transient analysis Vector Control
Content Type	Text
Resource Type	Article

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