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Abstract
In this article, a novel three-phase asymmetrical multilevel inverter is presented. The proposed inverter is designed with an optimal hardware components to generate three-phase nineteen output voltage levels. The proposed inverter exhibits various advantages like a suitable output voltage waveform with improved power quality, lower total harmonic distortion (THD), and more moderate complexity, reduction in cost, reduced power losses, and improved efficiency. A comparison of the proposed topology in terms of several parameters with existing methods illustrates its merits and features. The proposed inverter tested with steady-state and dynamic load disturbances. Various experimental results are included in this article to validate the performance of the proposed inverter during various extremities. In addition, a detailed comparison is tabulated between simulation and experimental results graphically. The proposed inverter has been stable even during load disturbance conditions. The simulation and feasibility model are verified using a prototype model.
Highlights
The multilevel inverter is gaining a lot of importance in industrial and high-power applications because of the usage of low-level inverter results in an output with more significant harmonics
The most prominent among these topologies is neutral point clamped inverters, the flying capacitors, and the cascaded inverters [2]. These topologies are aided with different switching patterns like single pulse width modulation SPWM, multi-carrier pulse width modulation MCPWM, and staircase modulation technique to achieve AC output voltage waveform with lower harmonics
Table.2 and Fig.28 to Fig.34 provides a comparison of different component parameters such as several electrical power switches (NSW), several DC sources (NDCS), driver circuits (NDC), clamping diodes (NCMP), clamping capacitors (NCP), efficiency(Eff), total standing voltage (TSV), total harmonic distortion (THD) and higher output voltage levels required for the inverter proposed. thirteen power switches and three DC sources were used in this topology
Summary
The multilevel inverter is gaining a lot of importance in industrial and high-power applications because of the usage of low-level inverter results in an output with more significant harmonics.
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