Sensor Fault Detection for Line Regulating Converters supplying Constant Power Loads in DC Microgrids

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Abstrakt

The objective of this paper is to increase the reliability of DC-DC converters operation, used in DC Microgrids (MG). This paper will determine the design requirements for a Sensor Fault Diagnosis (SFD) strategy for a DC-DC converter intended for DC MG, in order to allow continuous operation during erroneous sensor measurements. The SFD scheme is based on residuals generated by a generalized observer scheme. The observer gains is based on adaptive high-gain observer theory. The generated residuals are compared with thresholds, to detect sensor faults. The SFD scheme for the Line Regulating Converter (LRC) side is validated through simulations on a prototype DC MG system where the sensors are subjected to three types of sensor faults. In this paper, the prototype DC MG system will consist of a battery which is connected to the DC bus through a bidirectional buck/boost converter. A buck converter is used as LRC connected to the DC bus.
OriginalsprogEngelsk
Titel2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
Antal sider5
ForlagIEEE Signal Processing Society
Publikationsdatosep. 2020
Sider99-103
Artikelnummer9244467
ISBN (Elektronisk)9781728169903
DOI
StatusUdgivet - sep. 2020
Begivenhed11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020 - Dubrovnik, Kroatien
Varighed: 28 sep. 20201 okt. 2020

Konference

Konference11th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2020
Land/OmrådeKroatien
ByDubrovnik
Periode28/09/202001/10/2020
NavnIEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
ISSN2329-5767

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