High-efficiency multilevel converter technology for electric vehicle applications using super-junction MOSFETs

Neville McNeill, Xibo Yuan, Philip Anthony

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

Abstract

“Super-junction” MOSFETs exhibit low on-state resistances and low switching losses. However, the reverse recovery behaviour of their intrinsic diodes and their output capacitance characteristics make their use in voltage-sourced converters challenging. If these difficulties can be addressed, high efficiencies are attainable. Multilevel converters are potentially attractive topologies in electric vehicle charging and energy storage applications. Filter components may be smaller. Also, devices can be combined to give a blocking capability higher than their individual ratings. For example, where a vehicle's battery pack is being charged from or discharged into a 400V three-phase supply, SJ MOSFETs rated at 600V can be deployed in a three-level topology to give a nominal 1200V blocking capability. In this paper, the challenges presented by the super-junction MOSFET are tackled in a demonstration 720V, 3kVA, 20kHz, three-level, three-phase neutral-point-clamped converter.
Original languageEnglish
Title of host publication5th IET Hybrid and Electric Vehicles Conference (HEVC 2014)
Place of PublicationLondon
DOIs
Publication statusPublished - 5 Nov 2014
Externally publishedYes
Event5th IET Hybrid and Electric Vehicles Conference -
Duration: 5 Nov 20146 Nov 2014

Conference

Conference5th IET Hybrid and Electric Vehicles Conference
Period5/11/146/11/14

Keywords

  • semiconductor diodes
  • electric vehicles
  • energy storage

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