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Interleaving of voltage source converter legs enables higher output currents per phase, effectively increasing the power rating without increasing semiconductor ratings. Different switching patterns between the converter legs increase the number of Thevenin output voltage levels and, hence, the quality of the waveform but also generate circulating currents within one phase. This paper proposes a controller...
This paper presents a new variation of the selective harmonic elimination pulse width modulation (SHE-PWM) technique applied to cascaded multilevel converter based STATCOM system. The DC voltage levels of the cascaded H-bridge converter are assumed variables, hence increasing the degrees of freedom in the formulation of the problem. This approach allows additional harmonics to be controlled when compared...
This paper presents a new asymmetrical hybrid voltage source multilevel converter controlled with selective harmonic elimination pulse width modulation (SHE-PWM) technique. The proposed hybrid multilevel converter combines the separate flying capacitor (FC) converter in series with an H-bridge converter with distinct DC voltage supply. The DC-link voltage of the FC is twice that of the H-bridge converter...
This paper presents an efficient nine-level inverter controlled by selective harmonic elimination pulse width modulation (SHE-PWM) method. The proposed inverter circuit is supplied with a single DC voltage source which makes it a very attractive for renewable energy systems e.g. inverter-based PV systems and fuel cell. The proposed method employs a single multi-winding transformer with two-winding...
The problem of selective harmonic elimination pulse-width modulation (SHE-PWM) exhibits multiple sets of solutions. While these sets provide different solutions to the same problem, their harmonic performance varies greatly. Typical formulations to the problem have so far considered a quarter-wave symmetrically defined waveform in order to simplify the process of finding the required solutions, with...
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