Title :
THD analysis of a modulation technique applied for THD reduction
Author :
Joca, Davi R. ; Barreto, Luiz Henrique Silva Colado ; Oliveira Junior, Demercil de S. ; Praca, Paulo Peixoto ; Silva, Ranoyca N. A. L. ; Henn, Gustavo A. L.
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Ceara, Fortaleza, Brazil
Abstract :
This work presents the THD analysis of the modulation technique previously described in [1]. The proposed technique showed an improvement in the power quality, reducing the total harmonic distortion in flying capacitor multilevel inverters, combining the advantages of two modulation techniques: HE-PWM and CSV-PWM. In order to validate the study, experimental results have been included concerning the three-level 6 kW, 0.92 power factor FC inverter. The experimental results presented a line voltage THD around 42.09% for M.I. = 0.8 and 81.05% for M.I. = 0.3.
Keywords :
PWM invertors; harmonic distortion; power capacitors; power factor; power supply quality; CSV-PWM techniques; HE-PWM techniques; THD analysis; THD reduction; flying capacitor multilevel inverters; modulation technique; power 6 kW; power factor FC inverter; power quality; total harmonic distortion; Approximation methods; Equations; Frequency modulation; Harmonic analysis; Inverters; Mathematical model; Flying capacitor; THD analysis; THD reduction; modulation technique; multilevel inverter;
Conference_Titel :
Power Electronics Conference (COBEP), 2013 Brazilian
Conference_Location :
Gramado
DOI :
10.1109/COBEP.2013.6785112
