Design of a High Frequency 3-Phase 3-Level Hybrid Active-NPC Inverter

Alireza Kouchaki, Giorgo Kapino, Morten Nymand

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper presents design and implementation of a three-level hybrid active neutral point clamped (3L-ANPC) inverter using Gallium-Nitride (GaN) switches. This paper shows a modest usage of wide band gap (WBG) devices for achieving a high frequency converter. The ANPC benefits from hybrid modulation in which only two switches out of 6 active switches are modulating with high frequency (HF, carrier frequency) and the rest are switching with the reference frequency or low frequency (LF). Therefore, WBG switches can be utilized for these two HF switches. In this paper, gallium-nitride (GaN) FETs have been used for the HF switches. Two different switch technologies plus two different modulation schemes have introduced a hybrid 3L-ANPC. The semiconductor losses are calculated and modified with respect to the switch technologies. A three-phase 10 kW hybrid 3L-ANPC is designed using two 650 V GaN-FETs and four 650 V Si-MOSFETs for each phase. The switching frequency of the GaN-FETs is optimized to be at 100kHz. Different modulation schemes are implemented in the FPGA of a dSPACE device and the converter is tested at various conditions.

Original languageEnglish
Title of host publicationProceedings of the 20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe
Number of pages10
PublisherIEEE
Publication date30. Oct 2018
ISBN (Print)978-1-5386-4145-3
ISBN (Electronic)978-9-0758-1528-3, 978-9-0758-1529-0
Publication statusPublished - 30. Oct 2018
Event20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe - Riga, Latvia
Duration: 17. Sep 201821. Sep 2018

Conference

Conference20th European Conference on Power Electronics and Applications, EPE 2018 ECCE Europe
Country/TerritoryLatvia
CityRiga
Period17/09/201821/09/2018

Keywords

  • High frequency power converter
  • Modulation strategy
  • Multilevel converters
  • Pulse Width Modulation (PWM
  • Voltage Source Converter (VSC)
  • Wide bandgap devices

Fingerprint

Dive into the research topics of 'Design of a High Frequency 3-Phase 3-Level Hybrid Active-NPC Inverter'. Together they form a unique fingerprint.

Cite this