### 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.

Original language | English |
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Title of host publication | 2013 21st Iranian Conference on Electrical Engineering (ICEE 2013) |

Publisher | IEEE |

Pages | 1-6 |

Number of pages | 6 |

ISBN (Print) | 9781467356329 |

Publication status | Published - 2013 |

Event | 2013 21st Iranian Conference on Electrical Engineering - Ferdowsi University, Mashad, Iran, Islamic Republic of Duration: 14 May 2013 → 16 May 2013 |

### Conference

Conference | 2013 21st Iranian Conference on Electrical Engineering |
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Country | Iran, Islamic Republic of |

City | Mashad |

Period | 14/05/13 → 16/05/13 |

### Keywords

- cascaded multilevel convertor
- multiple dc-sources
- selective harmonic elimination
- triple switching-imperialialistic competition algorithm

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## Cite this

Naderi, Y., Hosseini, S. H., Mahari, A., & Naderi, R. (2013). A new strategy for harmonic minimization based on triple switching of multilevel converters. In

*2013 21st Iranian Conference on Electrical Engineering (ICEE 2013)*(pp. 1-6). IEEE.