A Desaturation-based Short Circuit Protection Technique for Quasi-Two-Level Converters
Conference: PCIM Conference 2025 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/06/2025 - 05/08/2025 at Nürnberg, Germany
doi:10.30420/566541407
Proceedings: PCIM Conference 2025
Pages: Language: englishTyp: PDF
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Authors:
Iyer, Anand Krishnamurthy; Polinder, Henk; Soeiro, Thiago Batista
Abstract:
This paper presents a desaturation-based technique for short-circuit protection in quasi-two-level converters. The proposed design enables a cost-effective implementation of this protection scheme in a flying capacitor multilevel converter operating as a quasi-two-level converter, requiring only two detection circuits for n series-connected switches. Detailed design guidelines for the protection circuit are provided, along with simulations that illustrate its operational boundaries and experimental verification of the proposed scheme.