Voltage Balancing in Diode Clamped Multilevel Inverter Using Sinusoidal PWM
نویسنده
چکیده
Multilevel inverters offer several advantages compared to the conventional 3-phase bridge inverter in terms of lower dv/dt stresses, lower electromagnetic compatibility, smaller rating and better output features. This project presents a 9-level diode Clamped inverter using Sinusoidal pulse width Modulation techniques as the control strategies. The algorithm has been developed within the carrier-based PWM framework to facilitate its implementation in diode clamped converters with three or more levels. A simulation model of 9-level DCMI has been designed and developed. The results obtained from the simulation model have been compared with the 3-level and 5-level diode clamped inverter. By increasing the level of inverter, effective balancing in line voltage and reduced THD is obtained. The good performance of the proposed modulation technique is demonstrated from simulation results for a nine-level diode-clamped inverter and the 3-level diode clamped inverter hardware model is designed and exhibited. Keywords— SPWM, THD, DCMI
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