NDLI: Modified SPWM technique for improved harmonic performance of single PV array fed grid-tied five-level converter

Content Provider	IET Digital Library
Author	Yadav, Shivam Kumar Mishra, Nidhi Singh, Bhim Padmanaban, Sanjeevikumar Blaabjerg, Frede
Abstract	This study presents a performance assessment of a single photovoltaic (PV) array fed transformer-based five-level converter topology with optimal shift factor-based modified sinusoidal pulse width modulation (OSF-MSPWM) technique under a dynamic solar PV environment. The five-level converter output is generated using H bridge cells and single-phase transformers. A single PV array is fed to all cascaded H bridge cells and isolation is provided by cascading secondary windings of the transformers in the AC side. The separate DC sources requirement is eliminated and galvanic isolation is provided by single-phase transformers. The decoupled controller with modified in-phase disposition PWM technique is used for active power injection into the grid at unity power factor. This work uses a new carrier shape at the same input carrier frequency and modulation index m f for improving the harmonics performance of the five-level converter. Hence, shift the dominant harmonics to the higher side for developed topology and performing optimal shift factor-based modulation is compared with the conventional SPWM technique. The steady-state and dynamic responses of the PV multilevel converter are observed in MATLAB simulation and tested in a real-time platform.
Starting Page	4498
Ending Page	4506
Page Count	9
ISSN	17554535
Volume Number	13
e-ISSN	17554543
Issue Number	Issue 19, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/13/19
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2020.0438
Journal	IET Power Electronics
Publisher Date	2021-01-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Cascaded H Bridge Cell Control of Electric Power System Conventional SPWM Technique Current Control Dynamic Solar PV Environment Electric Current Control Five-level Converter Output Harmonic Distortion Harmonics Performance Improved Harmonic Performance Input Carrier Frequency Modified In-phase Disposition PWM Technique Modified SPWM Technique Modulation Index Mf Performance Assessment Performing Optimal Shift Factor-based Modulation Photovoltaic Power System Power Conversion Harmonics Power Factor Power Generation Control Power Grid Power System Economics Power System Managemen Power System Operation PV Multilevel Converter PWM Invertors PWM Power Converter Single Photovoltaic Array Fed Transformer-based Five-level Converter Topology Single PV Array Fed Grid-tied Five-level Converter Single-phase Transformer Sinusoidal Pulse Width Modulation Technique Solar Power Stations Switching Converter Unity Power Factor
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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