Novel three-phase three-switch three-level high power factor SEPIC-type AC-to-DC converter

Johann W. Kolar, Hari Sree, Uwe Drofenik, Ned Mohan, Franz C. Zach

Research output: Chapter in Book/Report/Conference proceedingConference contribution

25 Scopus citations

Abstract

In the paper the topology of a new three-phase three-switch three-level PWM rectifier system is derived based on the basic structure of a DC-to-DC SEPIC converter. The system is characterized by full controllability of the power flow (independent of the level of the output voltage) and by a sinusoidal mains current shape in phase with the mains voltage. The operating principle of the converter is explained based on the conduction states of a bridge leg within a pulse period. The stationary operating behavior is analyzed by digital simulation based on the control of the mains phase currents by independent ramp-comparison controllers. Furthermore, a mathematical description of the operating behavior of the three-phase system including the coupling of the phase current controllers (given due to the floating mains star point) is discussed. Finally, results of an experimental investigation of a laboratory model of the converter are presented.

Original languageEnglish (US)
Title of host publicationConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Pages657-665
Number of pages9
Volume2
StatePublished - Jan 1 1997
EventProceedings of the 1997 IEEE 12th Applied Power Electronics Conference - Atlanta, GA, USA
Duration: Feb 23 1997Feb 27 1997

Other

OtherProceedings of the 1997 IEEE 12th Applied Power Electronics Conference
CityAtlanta, GA, USA
Period2/23/972/27/97

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