Thermal and performance comparison of active neutral-point-clamped (ANPC) and Dual FlyingCapacitor ANPC (DFC-ANPC) Inverters

Arash Khoshkbar-Sadigh, Roozbeh Naderi, Vahid Dargahi, Keith Corzine

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

Abstract

Multilevel inverters provide advantages such as improved efficiency, superior thermal characteristics, a better distribution of switching and conduction power losses, smaller size of passive components including ac filters and EMI filters, as compared to their two-level counterparts. Flying-capacitor (FC)-based multilevel inverters are gaining more attentions, and finding lots of medium-voltage as well as low-voltage industrial applications. Active neutral-point-clamped (ANPC) inverter, as a derived topology from FC-based inverters, offer the advantages of a reduced number of FCs as well as fewer switching cells. However, ANPC inverter needs high-voltage line-frequency switches which makes it difficult to increase number of levels/cells especially to more than five levels. The dual flying-capacitor (DFC)-ANPC topology addresses this by allowing the use of lower voltage power switches in series to replace high-voltage switches due to its feature to have natural zero voltage switching for line-frequency switches. This paper compares the ANPC and DFC-ANPC inverters in terms of high-voltage line-frequency power switch requirements and their practical implementation. Additionally, thermal comparison of both inverters running at low and high modulation indexes is provided, which further verifies the superior performance of the latter topology.

Original languageEnglish (US)
Title of host publication2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5522-5528
Number of pages7
ISBN (Electronic)9781728103952
DOIs
StatePublished - Sep 2019
Event11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States
Duration: Sep 29 2019Oct 3 2019

Publication series

Name2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
CountryUnited States
CityBaltimore
Period9/29/1910/3/19

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All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Control and Optimization
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Khoshkbar-Sadigh, A., Naderi, R., Dargahi, V., & Corzine, K. (2019). Thermal and performance comparison of active neutral-point-clamped (ANPC) and Dual FlyingCapacitor ANPC (DFC-ANPC) Inverters. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 5522-5528). [8912911] (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2019.8912911