NDLI: Dynamic performance comparison involving grid-connected PV systems operating with active power-line conditioning and subjected to sudden solar irradiation changes

Content Provider	IET Digital Library
Author	Takami, Marcelo Hideo de Freitas Silva, Sérgio A. Oliveira da Sampaio, Leonardo Poltronieri
Abstract	This study presents a comparative performance analysis involving single- and double-stage photovoltaic (PV) systems, which are connected to a three-phase four-wire electrical system by means of a four-leg inverter topology. The double-stage PV system is composed of a step-up DC/DC converter and a four-leg grid-connected inverter, while in the single-stage PV system the PV array is directly connected to the inverter DC bus. In addition to the active power injection into the grid, both PV systems have two attractive features, described as follows: (i) power quality improvement due to their capability to perform active power-line conditioning, such as load harmonic current suppression, reactive power compensation, and load unbalance compensation; (ii) dynamic improvement in the occurrence of abrupt solar irradiation variations, which is achieved through the implementation of a feed-forward control loop (FFCL) acting directly in the inverter DC-bus voltage control loop, resulting in speeding up of the dynamics of both the DC-bus voltage and the injected grid-inverter currents. The referred comparative analysis addresses the static and dynamic performances considering the PV systems operating under the action of the FFCL, as well as performing active power-line conditioning. Simulation and experimental results are presented to evaluate and validate the proposed study.
Starting Page	587
Ending Page	597
Page Count	11
ISSN	17521416
Volume Number	13
e-ISSN	17521424
Issue Number	Issue 4, Mar (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/13/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2018.5810
Journal	IET Renewable Power Generation
Publisher Date	2019-01-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Abrupt Solar Irradiation Variations Active Power Injection Active Power-line Conditioning Comparative Performance Analysis Control of Electric Power System DC-DC Power Converter Double-stage Photovoltaic System Double-stage PV System Dynamic Improvement Dynamic Performance Comparison Dynamic Performances Electric Current Control Four-leg Grid-connected Inverter Four-leg Inverter Topology Four-wire Electrical System Grid-connected PV System Injected Grid-inverter Current Inverter DC Bus Inverter DC-bus Voltage Control Loop Invertors Load Harmonic Current Suppression Photovoltaic Power System Power Converter Power Filter Power Generation Control Power Grid Power Quality Improvement Power Supplies to Apparatus Power Supply Quality PV Array Reactive Power Compensation Single-stage PV System Solar Power Stations Static Performances Step-up DC-DC Converter Sudden Solar Irradiation Changes Voltage Control
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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