Harmonic Minimization in Multilevel Inverters Using Modified Species-Based Particle Swarm Optimization

Hagh, Mehrdad Tarafdar; Taghizadeh, Houshang; Razi, Kaveh

doi:10.1109/tpel.2009.2022166

Cited by 162 publications

(78 citation statements)

References 21 publications

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“…[14], objective function is directly selected as the sum of several harmonic orders normalized to the fundamental or lower order harmonics. In [15], an interesting scheme was proposed which allows multiple switching in one level of the output voltage waveform. This study adopts the simplified form (fundamental frequency switching) of objective function in [15].…”

Section: Genetic Algorithmmentioning

confidence: 99%

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Application of Genetic Algorithm to Minimize Harmonic in Multilevel Inverter

Budiman

Windarko

Kuswadi

2016

JNTE

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Abstrak-Dalam desain inverter, harmonisa tegangan merupakan permasalahan utama yang mempengaruhi performa inverter. Pada umumnya, kompleksitas permasalahan minimisasi harmonisa dipengaruhi oleh jumlah orde harmonisa yang akan diminimisasi. Paper ini membahas utilisasi algoritman genetika untuk menyelesaikan persoalan minimisasi harmonisa di inverter multilevel. Tujuannya adalah untuk menemukan hubungan antara jumlah orde harmonisa yang diminimisasi dan total harmonic distortion (THD) yang dihasilkan. Inverter yang diinvestigasi adalah inverter 11-level, akan tetapi studi ini bisa diaplikasikan ke inverter multilevel dengan jumlah level yang lain. Hasil studi menunjukkan bahwa harmonisa di tegangan keluaran inverter memiliki keterkaitan yang kecil terhadap jumlah orde harmonisa yang diminimisasi. Akan tetapi, hasil yang paling bagus tetap masih didapatkan ketika jumlah harmonisa yang diminimisasi banyak. THD terbaik yang diperoleh, dievaluasi hingga harmonisa ke-19, adalah 2,76%, dimana angka ini cukup kecil dan dapat diterima. Kata Kunci : Harmonisa, algoritma genetika, inverter multilevel dan optimisasiAbstract-In inverter design, harmonic voltage is the main issue which affects the performance of the inverter. Generally, the harmonic minimization problem complexity is influenced by the number of harmonic orders to be minimized. This paper presents the utilization of genetic algorithm (GA) to solve harmonic minimization problem in multilevel inverter. The objective is to find relationship between the number of minimized harmonic orders and the results of total harmonic distortion (THD). The inverter to investigate is 11-level, but it is also applicable to multilevel inverters with any number of levels. The results show that harmonic contained in the output voltage has a small dependence on the number of harmonic orders that are minimized. However, the best results are still satisfied even though involving higher number of harmonics. The best-obtained THD, evaluated until 19 th harmonic, is 2.76%, which is fairly low and thus acceptable.

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Section: Genetic Algorithmmentioning

confidence: 99%

“…In [15], an interesting scheme was proposed which allows multiple switching in one level of the output voltage waveform. This study adopts the simplified form (fundamental frequency switching) of objective function in [15]. Considering up to 20 harmonics (for odd and non-triple harmonics), the objective function becomes…”

Section: Genetic Algorithmmentioning

confidence: 99%

Application of Genetic Algorithm to Minimize Harmonic in Multilevel Inverter

Budiman

Windarko

Kuswadi

2016

JNTE

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“…So the number of harmonics which can be eliminated from the output voltage is − 1. In order to increase the DOFs and eliminating more harmonics than the case of fundamental frequency switching scheme without any manipulation on inverters hardware, the SHE-PWM technique is proposed in [12], which is also denominated virtualstage PWM. This technique is one of the powerful theories that applies to multilevel inverters in order to generate high-quality voltage waveform with less switching frequency in comparison with other PWM methods.…”

Section: Selective Harmonic Eliminationmentioning

confidence: 99%

“…Because of the intricacy of the problem, in most studies on the SHE methods for multilevel inverters, it is assumed that only one switching angle per each voltage level is defined and the dc voltage sources are balanced (equal to each other). But in practical applications, depending on the output waveform and operation scheme of the inverter, the dc sources could be unbalanced or several switchings per each level are involved [9][10][11][12][13]. SHE method is a modulation strategy whose goal is to determine the proper switching angles to eliminate the number of low-order harmonics which cause to minimize the output waveform THD [14].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Novel Technique for Selective Harmonic Elimination in Multilevel Inverters Based on ICA

Ajami

Oskuee

Mokhberdoran

2013

Advances in Power Electronics

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Eliminating the specific harmonics especially low-order harmonics of the output voltage of 9-level inverter using SHE-PWM control scheme is investigated. Harmonic minimization is the intricate optimization problems because the nonlinear transcendental equations have multiple local optima. Increasing the degrees of freedom in the suggested method means that the number of switching angles increases. The suggested method is able to eliminate high number of undesired harmonics. As the number of switching angles increases, using either traditional iterative techniques or resultant theory method gets useless. In this paper to overcome this problem the imperialist competitive algorithm (ICA) is used. Also a DC-DC converter is used to enhance the SHE performance in the range for which the conventional SHE methods do not have any solution. Experimental and simulation results of a 9-level inverter show that the proposed method effectively minimizes a large number of particular harmonics so the total harmonics distortion of output voltage will be lower.

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“…Newton-Raphson and sequential quadratic programming (SQP) are iterative methods, whereas resultant theory is an example of an analytical method. However, due to the nonlinearity of such problems, heuristic methods, like genetic algorithm (GA) [15] and particle swarm optimization (PSO) [16], have almost been introduced.…”

Section: Introductionmentioning

confidence: 99%

An improved OMTHD technique for an $n$-level cascaded multilevel inverter with adjustable DC sources

Toodeji¹

2017

Turk J Elec Eng & Comp Sci

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Optimal minimization of total harmonic distortion (OMTHD) and selective harmonic elimination (SHE) switching techniques are usually employed to reduce generated harmonics of multilevel inverters. In the former technique, the THD of waveform is reduced without elimination of any harmonic order and the latter, in contrast, eliminates selected harmonic orders. In this paper, the harmonic elimination ability of the SHE technique is added to OMTHD and an improved OMTHD technique is proposed for an n -level cascaded multilevel inverter with adjustable DC sources. The main novelty of this switching technique is elimination of some harmonic orders, beside THD minimization. Moreover, optimal DC voltages and switching angles can be estimated simpler than conventional OMTHD technique. To show the advantages of the proposed technique, which is formulated for an n -level inverter, a 7-level one is simulated in MATLAB/Simulink with both improved and conventional OMTHD techniques. The obtained results show the elimination of two elective harmonics as well as THD minimization. Moreover, experiments on a 7-level inverter verify the superiority of the proposed technique.

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Harmonic Minimization in Multilevel Inverters Using Modified Species-Based Particle Swarm Optimization

Cited by 162 publications

References 21 publications

Application of Genetic Algorithm to Minimize Harmonic in Multilevel Inverter

Application of Genetic Algorithm to Minimize Harmonic in Multilevel Inverter

Implementation of Novel Technique for Selective Harmonic Elimination in Multilevel Inverters Based on ICA

An improved OMTHD technique for an $n$-level cascaded multilevel inverter with adjustable DC sources

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