New Operational Mode of Diode Clamped Multilevel Inverters for Pure Sinusoidal Output
نویسندگان
چکیده
A new operational mode for diode clamped multilevel inverters (DCMLI) based on 5-level operation is proposed. This operational mode is based on a new technique called sinusoidal pulse width modulation (SPWM). Such operation aims to avoid the imbalance problem of the DC-link capacitors for multilevel inverters with more than 3-levels. This scheme reduces the DC-link capacitance without introducing any significant voltage ripple at the DC-link nodes. The proposed scheme can be generalized for any number of levels. Validity of the proposed operational mode of multilevel inverter is confirmed by simulations on a prototype 5-level DCMLI using MATLAB.
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