Grid Friendly Supply of Nonlinear Dynamic Loads by a Scalable Hybrid Multilevel Converter
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:10.30420/566541101
Proceedings: PCIM Conference 2025
Pages: Language: englishTyp: PDF
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Authors:
Garmier, Pierre-Louis; Basic, Duro; Baviere, Cyrille; Fahrner, Laurent; Lapassat, Nicolas; Sihler, Christof; Terrien, Franck
Abstract:
European steel industry is currently facing challenges driven by stricter power quality requirements. Historically, utility requirements have been satisfied with the use of compensators (SVCs or STAT-COMs) connected in parallel to electric arc furnaces (EAFs), to correct the power factor and reduce harmonics, flicker, and unbalance. To achieve maximum power quality performance and furnace productivity improvements, a series-connected modular multilevel converter system for directly feeding EAFs has been developed. Thanks to the new topology of the converter front-end, one third of the IGBT submodules of the rectifier can be replaced by diode stacks, with positive impact on size and cost.