Space-Vector-Based Generalized Discontinuous Pulsewidth Modulation for Three-Level Inverters Operating at Lower Modulation Indices

作者: Subhadeep Bhattacharya , Diego Mascarella , Geza Joos

DOI: 10.1109/JESTPE.2017.2666153

关键词:

摘要: Conventional three-level discontinuous pulsewidth modulation (DPWM) templates typically provide maximum switching loss reduction capability for load power factor angles in the range from 30° lagging to leading. This paper proposes three space-vector-based DPWM lower factors and a generalized strategy inverters operating with indices than 0.5. For different factors, proposed adapts inverter pulse sequence by combining portions of conventional within one fundamental cycle ensures minimum instances when changing templates. Consequently, aligns PWM clamping intervals respective load-current peaks, achieving around 50% extended all (90° 90° leading). The simulation experimental results demonstrate effectiveness over strategies.

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