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Energies 2017, 10(3), 346; doi:10.3390/en10030346

Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM

Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka 808-0196, Japan
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Author to whom correspondence should be addressed.
Academic Editor: Ying-Yi Hong
Received: 14 January 2017 / Revised: 28 February 2017 / Accepted: 7 March 2017 / Published: 12 March 2017
(This article belongs to the Special Issue Electric Power Systems Research 2017)

Abstract

Three-phase two-level voltage source converters are used for distribution static compensator (DSTATCOM) applications and can be replaced by a multilevel inverter. In this paper, an LCL filter interfaced cascaded H-bridge multilevel inverter-based (CHBMLI) DSTATCOM is simulated and its performance is analyzed considering the system parameters. The analysis considers factors including the switching frequency, modulation index, and filter parameters of a DSTATCOM system. The LCL filter design and analysis for the low switching frequency operation of CHBMLI is proposed in this paper. Phase shift pulse-width modulation is used for the generation of switching signals. The reference current is generated using synchronous reference frame theory (SRFT) for reactive power and harmonic compensations. The simulation model of the CHBMLI-based DSTATCOM system is developed in MATLAB Simulink. The results are demonstrated for a linear/non-linear load under unbalanced conditions, considering the voltage sag and swell in the system due to a disturbance in the load. View Full-Text
Keywords: cascaded H-bridge multilevel inverter-based (CHBMLI); LCL filter; phase shift pulse width modulation (PSPWM); distribution static compensator (DSTATCOM) cascaded H-bridge multilevel inverter-based (CHBMLI); LCL filter; phase shift pulse width modulation (PSPWM); distribution static compensator (DSTATCOM)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Pandey, R.; Tripathi, R.N.; Hanamoto, T. Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM. Energies 2017, 10, 346.

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