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Your search keyword '"Cimoroni, M. G."' showing total 14 results
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14 results on '"Cimoroni, M. G."'

1. Investigation about selective harmonic elimination in unbalanced multilevel inverters

Author

Buccella C., Cimoroni M. G., Cecati C., Di Tommaso A. O., Nevoloso C., Schettino G., Meo S., Buccella, C., Cimoroni, M. G., Cecati, C., Di Tommaso, A. O., Nevoloso, C., Schettino, G., Meo, S., Buccella C., Cimoroni M.G., Cecati C., Di Tommaso A.O., Nevoloso C., Schettino G., and Meo S.

Subjects
l-level Cascaded H-bridges (CHB) Inverters, Power Quality, Total Harmonic Distortion (THD), Selective Harmonic Elimination (SHE), l-level Cascaded H-bridges (CHB) Inverter
Abstract

In this paper 5 and 7 levels cascaded H-bridges inverters are considered, feeding by unequal dc voltage sources. The effect of these unbalancing operation is examined concerning harmonic analysis and total harmonic distortion of the output voltages. The system of equations, obtained by the expansion in the Fourier series of phase output voltage, is solved by applying a method of graphic solution that allows obtaining the switching angles able to eliminate the lower order harmonics.

Published
2022

4. Mathematical formulation of pulse amplitude modulation selective harmonic elimination in multilevel three phase inverters

Author

Buccella C., Cimoroni M. G., Cecati C., Di Tommaso A. O., Nevoloso C., Schettino G., Buccella C., Cimoroni M.G., Cecati C., Di Tommaso A.O., Nevoloso C., and Schettino G.

Subjects
Total Harmonic Distortion (THD), Selective Harmonics Elimination (SHE), Selective Harmonics Mitigation (SHM), Settore ING-IND/32 - Convertitori, Macchine E Azionamenti Elettrici, Cascaded H-bridges (CHB) Multilevel Inverters
Abstract

In this paper multilevel cascaded H-bridges (CHB) three phase inverters with 2n dc sources, n=1,2,3,... are considered and a mathematical formulation providing both 2n switching angles and dc voltage source to eliminate n+1 harmonics and their respective multiple from their output voltage waveform, is proposed. The computed angles don't depend on modulation index and the source voltages linearly vary with it. The proposed procedure finds the solution through an analytical formula that avoids to solve transcendental systems and presents very low computational cost. A lot of low order harmonics are eliminated, returning a very low total harmonic distortion (THD). Particularly for 9-level configuration, the first not mitigated harmonic is the 17th and the percentage THD is 5.59%.

Published
2022

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