Implementation of Cuckoo Search Optimized Firing Scheme in 5-Level Cascaded H-Bridge Multilevel Inverter for Power Quality Improvement

다국어 초록 (Multilingual Abstract)

Multilevel inverters have appeared as a successful and utilitarian solution in many power applications. The prime objective of an inverter is to keep the fundamental component of the output voltage of a multilevel inverter at a preferred value. Equally important is the need to keep the harmonic components in the output voltage within stated harmonic limits. Therefore, the basis of this research is to develop a harmonic minimization function that optimizes the switching angles of cascaded H-bridge multilevel inverter. Due to benefits of the Cuckoo Search (CS) algorithm, it is applied to determine the switching angles, which are further used to generate the switching pattern for firing the H-bridges of multilevel inverter. Simulation results are compared with SPWM based firing scheme. The switching frequency for SPWM firing scheme is taken as 200 Hz since the switching losses are increased when switching frequency is high. To validate the ability of Cuckoo Search optimized firing scheme in minimization of harmonics, experimental results obtained from hardware prototype of Five Level Cascaded H-Bridge Multilevel Inverter equipped with a FPGA controller are presented to verify the simulation results.

참고문헌 (Reference)

1 A. Salami, "Total harmonic distortion minimization of multilevel converters using genetic algorithms" 4 (4): 1023-1027, 2013

2 O. A. Lysenko, "The study of five-level inverters with the various PWM" 1-5, 2018

3 J. Olamaei, "THD minimization in multilevel inverters using teaching-learning-based optimization algorithm" 39 (39): 1-9, 2017

4 N. Vinothkumar, "Simulated annealing based selective harmonic elimination for multi-level inverter" 117 : 855-861, 2017

5 J. Napoles, "Selective harmonic mitigation technique for cascaded H-bridge converters with nonequal DC link voltages" 60 (60): 1963-1971, 2013

6 D. Kumar, "Selective harmonic elimination PWM technique implementation for a multilevel converter" 4 (4): 303-308, 2015

7 S. S. Dash, "Performance analysis of multilevel inverters using variable switching frequency carrier based PWM techniques" 10 : 2012

8 V. K. Gupta, "Optimized switching scheme of cascaded H-bridge multilevel inverter using PSO" 64 : 699-707, 2015

9 D. Singla, "Optimal minimization of THD and loss analysis in multilevel inverter using cuckoo search algorithm" 5 (5): 1104-1110, 2018

10 J. Rodriguez, "Multilevel inverters : a survey of topologies, controls, and applications" 49 (49): 724-738, 2002

11 J. S. Lai, "Multilevel converters – A new breed of power converters" 32 (32): 509-517, 1996

12 B. P. McGrath, "Multicarrier PWM strategies for multilevel inverters" 49 (49): 858-867, 2002

13 J. Kumar, "Harmonic reduction technique for a cascade multilevel inverter" 1 (1): 181-185, 2009

14 B. Ozpineci B, "Harmonic optimization of multilevel converters using genetic algorithms" 3 (3): 92-95, 2005

15 W. M. Aly, "Evaluation of cuckoo search usage for model parameters estimation" 78 (78): 2013

16 X. S. Yang, "Cuckoo search via Lévy flights" 210-214, 2009

17 S. Roy, "Cuckoo search algorithm using Lévy flight : a review" 5 (5): 10-15, 2013

18 A. H. Gandomi, "Cuckoo search algorithm : A metaheuristic approach to solve structural optimization problems" 29 (29): 17-35, 2013

19 R. Mohanty, "Comparison study of harmonic elimination in cascade multilevel inverter using particle swarm optimization and genetic algorithm" 5 (5): 43-49, 2013

20 M. Mythili, "Comparison of GA and PSO algorithms in cascaded multilevel inverter using selective harmonic elimination PWM technique" 3 (3): 8621-8628, 2014

21 V. J. Manohar, "Comparative analysis of NR and TBLO algorithms in control of cascaded MLI at low switching frequency" 85 : 976-986, 2016

22 F. Z. Peng, "Applications of cascaded multilevel inverters" 4 (4): 658-665, 2003

23 H. Toodeji, "An improved OMTHD technique for an n-level cascaded multilevel inverter with adjustable DC sources" 25 : 4841-4853, 2017

24 M. Malinowski, "A survey on cascaded multilevel inverters" 57 (57): 2197-2206, 2010

25 T. Gajpal, "A comparative survey on harmonic optimization of multilevel inverter" 2 (2): 2016