Three-Phase ZVS Inverter with Variable and Fixed Frequency Operation based on GaN Semiconductors

Kohlhepp B, Lutsch M, Dürbaum T (2022)

Publication Type: Conference contribution

Publication year: 2022

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: 24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe

Event location: Hannover DE

ISBN: 9789075815399

Abstract

As high efficiency is on everyone's lips, this paper studies an inverter using a ZVS modulation scheme promising high efficiency. It uses triangular current mode (TCM) to minimize the ripple while maintaining ZVS. In order to fulfill the required power density, high switching frequencies should be applied. Current threshold detection circuits in combination with this modulation scheme turn the inverter's legs into current sources. Since all phases of the inverter are tied together at the load's star point, there might be issues, if slight current threshold errors exist within the inverter. In order to demonstrate that the modulation scheme can handle situations with and without connection of the load's neutral point to the DC-link midpoint, both configurations are studied in a practical setup. The practical test setup gives satisfactory results with respect to the quality of the output waveforms using the THD of the currents.

Authors with CRIS profile

Benedikt Kohlhepp Professur für Optoelektronik Michael Lutsch Professur für Elektromagnetische Felder Thomas Dürbaum Professur für Elektromagnetische Felder

How to cite

APA:

Kohlhepp, B., Lutsch, M., & Dürbaum, T. (2022). Three-Phase ZVS Inverter with Variable and Fixed Frequency Operation based on GaN Semiconductors. In 24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe. Hannover, DE: Institute of Electrical and Electronics Engineers Inc..

MLA:

Kohlhepp, Benedikt, Michael Lutsch, and Thomas Dürbaum. "Three-Phase ZVS Inverter with Variable and Fixed Frequency Operation based on GaN Semiconductors." Proceedings of the 24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe, Hannover Institute of Electrical and Electronics Engineers Inc., 2022.

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