Inverter device nonlinearity characterization technique for use in a motor drive system

Andrew Babel, Annette Mütze, Roland Seebacher, Klaus Krischan, Elias Strangas

Research output: Contribution to journalArticlepeer-review


This paper introduces a detailed nonlinearity characterization technique for insulated-gate bipolar transistor inverters in a drive system which is able to measure device nonlinearities. Methods are derived from measurements of the voltage on the inverter phases. These measurements are obtained while applying a set of direct currents to an electrical machine. These methods are then applied to tests using alternating current. The study of inverter nonlinearities is useful in order to conduct condition monitoring. These methods fulfill the need to characterize each device in an inverter. In addition to characterizing every device using either ac or dc current, the method is resistant to noise; for these reasons, the method is applicable in the field. Simulations and experimental work demonstrate the benefits and applicability of the methods
Original languageEnglish
Pages (from-to)2331-2339
JournalIEEE Transactions on Industry Applications
Issue number3
Publication statusPublished - 2015

Fields of Expertise

  • Mobility & Production

Treatment code (Nähere Zuordnung)

  • Experimental


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