Simplified Four-Level Inverter-Based Dynamic Voltage Restorer With Single DC Power Source

<span>This document proposes a photovoltaic (PV) based single-phase dynamic voltage restoration (DVR) device, it eliminates both sag and swell voltage and compensates for power. The proposed system requires a power source to compensate for the sag/swell voltage. This system has found a simple topology for the DVR that uses PV with two DC-DC boosts converters as the DC power source for the dynamic voltage conservator. The DC/DC boost converter powered by the PV generator is used to increase the voltage to meet the DC bus voltage requirements of the single-branch voltage source inverter (VSI). This system uses renewable energy; saves energy accordingly and supplies power to critical/sensitive loads. The control method used in this work is a Sliding Mode Control (SMC) method and relies on a phase locked loop (PLL) used to control the active filter. The effectiveness of the suggested method is confirmed by the MATLAB/Simulink® simulation results and some prototype experiments. These results show the capacity of the proposed DC link control.</span>

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Half‐cascaded multilevel inverter coupled to photovoltaic power source for AC‐voltage synthesizer of dynamic voltage restorer to enhance voltage quality

International Journal of Numerical Modelling Electronic Networks Devices and Fields ◽

10.1002/jnm.2883 ◽

2021 ◽

Author(s):

Ali Darvish Falehi

Keyword(s):

Power Source ◽

Multilevel Inverter ◽

Dynamic Voltage Restorer ◽

Photovoltaic Power ◽

Voltage Quality ◽

Voltage Restorer ◽

Dynamic Voltage ◽

Cascaded Multilevel Inverter

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Dynamic Voltage Restorer using Matlab

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.e1167.069520 ◽

2020 ◽

Vol 9 (5) ◽

pp. 1304-1307

Keyword(s):

Low Cost ◽

Power Source ◽

Voltage Sag ◽

Dynamic Voltage Restorer ◽

Auxiliary Power ◽

Voltage Restorer ◽

Dynamic Voltage ◽

Fault Compensation ◽

Electric Supply

The occurrences of sag and swell in electric supply is termed as a problem of concern, since it affects the energy quality. To maintain energy quality, it is necessary to eliminate these factors to a great extent. The device used for this purpose is known as DVR which stabilizes the quality of power supply by compensating sag and swells and critical load connected to the industry remains unaffected. DVR is ideal for the application in industries because of its features i.e. low cost, small size, and its rapid response to disruption. In this work, DVR is used to eliminate voltage sag and swell and for one more application i.e. fault compensation by injecting missing voltage from the auxiliary power source.

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