Abstract
Multilevel inverters are increasingly being employed for industrial applications, such as speed control of motors and grid integration of distributed generation systems. The focus is on developing topologies that utilize fewer lower-rating switches and power sources while working efficiently and reliably. This work pertains to developing a three-phase multilevel inverter that employs switching capacitors and a single DC power supply that produces a nine-stage, three-phase voltage output. A recently proposed powerful meta-heuristic technique called symbiotic organism search (SOS) has been applied to identify the optimum switching angles for Selective Harmonic Elimination (SHE) from the output voltage waveform. A thorough converter analysis has also been done in the MATLAB/SIMULINK environment and is validated with the real-time hardware-in-the-loop (HIL) experiment results.
Highlights
Multilevel Inverters (MLIs) are state-of-the-art power electronic converters that have taken the place of traditional inverters in many applications, such as renewable energy systems, grid integration systems, mechanical drives, electric vehicles, and FACTS [1,2,3,4]
The contours of angles δ1, δ2, δ3, and δ4 for distinct values of the modulation index is shown in Figure 5, which indicates all feasible solutions for angles at different modulation indices
The contours of angles δ1, δ2, δ3, and δ4 for distinct values of the modulation index is shown in Figure 5, which indicates all feasible solutions for angles the modulation index is shown in Figure 5, which indicates all feasible solutions for angles at different modulation indices
Summary
Manita Kumari 1 , Adil Sarwar 1, * , Mohd Tariq 1, * , Shafiq Ahmad 2 , Adamali Shah Noor Mohamed 3 and Eduardo M. INESC-ID, Sustainable Power Systems Group, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal. Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
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