Simple Hybrid Integration of SiC MOSFETs in a B6 Converter for Enhanced Partial Load Efficiency

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00009371
URN to cite this document: urn:nbn:de:bvb:703-epub-9371-5

Title data

Gick, Sebastian ; Pfeifer, Markus ; Nielebock, Sebastian ; Bakran, Mark-M.:
Simple Hybrid Integration of SiC MOSFETs in a B6 Converter for Enhanced Partial Load Efficiency.
In: IEEE Open Journal of Power Electronics. Vol. 6 (2025) . - pp. 1282-1295.
ISSN 2644-1314
DOI der Verlagsversion: https://doi.org/10.1109/OJPEL.2025.3589026

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Abstract

This paper introduces a hybrid B6 converter that employs IGBTs as high-side switches and SiC MOSFETs as low-side switches. By integrating a modified Space Vector Pulse Width Modulation scheme, the converter achieves near-SiC efficiency during partial load operation of a three-phase industrial motor. Remarkably, it utilizes only half the SiC area of a full SiC converter, making it both cost-effective and straightforward to implement. A motor model is defined to analytically assess the impact of semiconductor loss mechanisms and establish criteria for an efficient industrial motor converter. Simulations based on empirical measurements are conducted to optimize the SiC/Si ratio and generate efficiency curves for the converters under investigation. The results demonstrate that the hybrid converter can reduce partial load losses by two-thirds compared to a conventional IGBT converter. These simulations are validated by exper- imental loss measurements on a prototype converter, confirming the high accuracy of the simulation results. The proposed converter offers significant advantages, including high flexibility, ease of implementation, and increased power density, with only a moderate rise in converter cost.

Further data

Item Type:	Article in a journal
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Institutions of the University:	Faculties > Faculty of Engineering Science > Chair Mechatronics > Chair Mechatronics - Univ.-Prof. Dr.-Ing. Mark-M. Bakran Profile Fields > Advanced Fields > Advanced Materials Profile Fields > Emerging Fields > Energy Research and Energy Technology Research Institutions > Research Units > Zentrum für Energietechnik - ZET Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Mechatronics Profile Fields Profile Fields > Advanced Fields Profile Fields > Emerging Fields Research Institutions Research Institutions > Research Units
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-9371-5
Date Deposited:	02 Jun 2026 10:48
Last Modified:	02 Jun 2026 10:48
URI:	https://epub.uni-bayreuth.de/id/eprint/9371

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