Reconfigurable Selective Harmonic Elimination Technique for Wide Range Operations in Asymmetric Cascaded Multilevel Inverter


Vol. 18, No. 4, pp. 1037-1050, Jul. 2018
10.6113/JPE.2018.18.4.1037


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 Abstract

This paper presents a novel reconfigurable selective harmonic elimination technique to control harmonics over a wide range of Modulation Indexes (MI) in Multi-Level Inverter (MLI). In the proposed method, the region of the MI is divided into various sectors and expressions are formulated with different switching patterns for each of the sectors. A memetic BBO-MAS (Biogeography Based Optimization - Mesh Adaptive direct Search) optimization algorithm is proposed for solving the Selective Harmonic Elimination - Pulse Width Modulation (SHE-PWM) technique. An experimental prototype is developed using a Field Programmable Gate Array (FPGA) and their FFT spectrums are analyzed over a wide range of MI using a fluke power logger. Simulation and experimental results have validated the performance of the proposed optimization algorithms and the reconfigurable SHE-PWM technique. Further, the sensitivity of the harmonics has been analyzed considering non-integer variations in the magnitude of the input DC sources.


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Cite this article

[IEEE Style]

K. R and R. Thottungal, "Reconfigurable Selective Harmonic Elimination Technique for Wide Range Operations in Asymmetric Cascaded Multilevel Inverter," Journal of Power Electronics, vol. 18, no. 4, pp. 1037-1050, 2018. DOI: 10.6113/JPE.2018.18.4.1037.

[ACM Style]

Kavitha R and Rani Thottungal. 2018. Reconfigurable Selective Harmonic Elimination Technique for Wide Range Operations in Asymmetric Cascaded Multilevel Inverter. Journal of Power Electronics, 18, 4, (2018), 1037-1050. DOI: 10.6113/JPE.2018.18.4.1037.