Enhanced Krill Herd Optimization Algorithm: Total Harmonic Distortion Minimization

2021 ◽  
pp. 2421-2429
Author(s):  
Vamsi Krishna Reddy Aala Kalananda ◽  
Venkata Lakshmi Narayana Komanapalli
Keyword(s):  
Optimization Algorithm ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Krill Herd ◽  
Distortion Minimization

Optimal total harmonic distortion minimization in multilevel inverter using improved whale optimization algorithm

2020 ◽  
Vol 21 (3) ◽  
Author(s):  
Aala Kalananda Vamsi Krishna Reddy ◽  
Komanapalli Venkata Lakshmi Narayana
Keyword(s):  
Optimization Algorithm ◽  
Heuristic Algorithms ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Whale Optimization Algorithm ◽  
Matlab Simulation ◽  
Multilevel Inverters ◽  
Whale Optimization ◽  
Distortion Minimization ◽  
Optimum Solution

AbstractThis paper presents the solution to mitigate the total harmonic distortion (THD) in multilevel inverters (MLIs) using novel improved whale optimization algorithm (IWOA). The IWOA falls under the category of swarm-based nature inspired optimization algorithms. It uses a novel diffusion process using a random walk technique and utilizes an additional ranking system to estimate the optimum solution to minimize THD. Moreover, THD minimization is further accomplished through nine various meta-heuristic algorithms for investigation and comparative analysis. The selected algorithms along with the proposed IWOA are rigorously tested on single phase 5 and 7 level cascaded H-Bridge MLIs for various performance parameters such as consistency, computational efficiency and speed of convergence. It is found that the proposed algorithm outperforms the nine algorithms and is efficient for THD minimization for modulation index (MI) in the range of 0–1. The results are analyzed and reported after thorough verification using MATLAB simulation.

Utlization Cat Swarm Optimization Algorithm for Selected Harmonic Elemination in Current Source Inverter

2015 ◽  
Vol 6 (4) ◽  
pp. 888 ◽  
Author(s):  
Hamed Hosseinnia ◽  
Murteza Farsadi
Keyword(s):  
Heuristic Algorithm ◽  
Optimization Algorithm ◽  
Current Source ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Voltage Source ◽  
Swarm Optimization ◽  
Current Source Inverter ◽  
Harmonic Elimination ◽  
Selective Harmonic Elimination

The voltage source inverter (VSI) and Current source inverter (CSI) are two types of traditional power inverter topologies.In this paper selective harmonic elimination (SHE) Algorithm was impelemented to CSI and results has been investigated. Cat swarm (CSO) optimization is a new meta-heuristic algorithm which has been used in order to tuning switching parameters in optimized value.Objective fuction is reduction of total harmonic distortion(THD) in inverters output currents.All of simulation has been carried out in Matlab/Software.

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