Efficiency analysis of three-level NPC and T-Type voltage source inverter for various operation modes optimizing the overall drive train efficiency by an operating mode selection

For drive train efficiency estimation, three-level inverters are analyzed regarding different modulation techniques and switching frequencies. In this paper an optimized operating mode selector is proposed to choose a loss optimal modulation technique and switching frequency for each operating point. Energy savings due to the operating mode selector are validated on a driving cycle.

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