Title :
Extracting formulas of line voltage THD for 7-level inverter with equal DC sources
Author :
Vadizadeh, H. ; Farokhnia, N. ; Fathi, S.H. ; Rabbani, D.
Author_Institution :
Dept. of Electr. Eng., Amirkabir Univ. of Technol. (Tehran Polytech.), Tehran, Iran
Abstract :
Multilevel Inverters inject lesser harmonics in comparison with common 3-level inverters. However, this amount is notable. THD is a proper index to evaluate the amount of harmonics. Line voltage THD of a 5-level inverter´s stepped waveform has been formulated in literature. In this paper, the method of calculating the formulas is developed. So, the formulas of line voltage THD for a 7-level inverter are extracted. It is done to be used for analytical foundation of optimal switching angles as a future work.
Keywords :
harmonic distortion; invertors; 5-level inverter stepped waveform; 7-level inverter; DC sources; line voltage THD; multilevel inverters; optimal switching angles; Conferences; Equations; Genetic algorithms; Harmonic analysis; Inverters; Mathematical model; Switches; 7-level Inverter; Equal DC Sources; Formulas of Line Voltage THD; Stepped Waveform;
Conference_Titel :
Electrical Power Quality and Utilisation (EPQU), 2011 11th International Conference on
Conference_Location :
Lisbon
Print_ISBN :
978-1-4673-0379-8
DOI :
10.1109/EPQU.2011.6128929
