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oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/107312026-10-18T21:13:10Zopenairedrivercom_ebyu_10000col_ebyu_10001

Enhanced soft-switched T-type neutral-point clamped (T-NPC) inverter with reduced component numberOzgenel, Mehmet CihatTing, Naim SuleymanSahin, YakupCost effectivenessElectric drivesElectric invertersZero current switchingActive snubberAuxiliary switchMain switchesNeutral-point clamped invertersSoft-switchedSoft-switchingTurn offsTurn-on voltagesZero voltage transitionZero- Voltage Switchingadultarticlecontrolled studycost effectiveness analysisdiodeelectric potentialhumanrenewable energysteady stateZero voltage switchingThis paper presents an enhanced soft-switched T-type neutral-point clamped inverter featuring a compact active snubber cell that delivers zero-voltage transition turn-on and zero-voltage switching (ZVS) turn-off for the main switches, while auxiliary switches operate with zero-current switching turn-on and ZVS turn-off. Unlike prior designs, four auxiliary-path diodes are eliminated, reducing component count, conduction path length, and reverse-recovery losses, which in turn lowers cost, eases thermal management, and boosts power density. The proposed topology maintains full soft switching (SS) for all active devices without introducing additional voltage or current stress. The theoretical analysis of the inverter is clarified, and the operating modes for steady-state analysis are presented in detail. Experimental validation on a 400 V, 1 kW, and 100 kHz prototype demonstrates consistent SS across load conditions and a peak efficiency of 97.2%. The combination of higher efficiency, structural simplicity, and cost-effectiveness makes the proposed inverter a strong candidate for high-performance, compact T-type applications in renewable energy, and electric drive systems. © 2025 Author(s).American Institute of Physics2025Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/10731https://doi.org/10.1063/5.02964610034-6748enReview of Scientific Instrumentsinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/10731