Title :
A new strategy for harmonic minimization based on triple switching of multilevel converters
Author :
Naderi, Yahya ; Hosseini, Seyed Hossein ; Mahari, Arash ; Naderi, Roozbeh
Author_Institution :
Fac. of Electr. & Comput. Eng., Tabriz Univ., Tabriz, Iran
Abstract :
In this paper the Imperialistic competition algorithm (ICA) is used to minimize harmonic components of the output voltage up to 75th harmonic in a multilevel inverter structure with unequal DC sources by the means of selected switching angles. As the number of switching angles increase, it becomes more difficult to calculate the optimum switching angles in order to minimize THD, so the ICA method is used to find the global optimum of the search space. In addition, the topology used in this multilevel converter is an optimum topology with maximum number of output voltage steps while the number of switches is constant.
Keywords :
harmonic distortion; harmonics suppression; switches; switching convertors; ICA method; Imperialistic competition algorithm; THD; harmonic minimization; multilevel converter; multilevel inverter structure; optimum topology; optimum triple switching angle calculation; unequal DC source; Equations; Harmonic analysis; Inverters; Minimization; Power system harmonics; Switches; Topology; Cascaded Multilevel Converter; Multiple DC-Sources; Selective Harmonic Elimination (SHE); Triple Switching-Imperialistic Competition Algorithm (ICA);
Conference_Titel :
Electrical Engineering (ICEE), 2013 21st Iranian Conference on
Conference_Location :
Mashhad
DOI :
10.1109/IranianCEE.2013.6599883
