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A New Concept of Multilevel DVR based on Seven-Level Packed U-Cell Inverter to Improve Power Quality

Credit to Download: 1 | Page Numbers 13 | Abstract Views: 107
Year: 2019
COI code: NCEEM08_009
Paper Language: English

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Authors A New Concept of Multilevel DVR based on Seven-Level Packed U-Cell Inverter to Improve Power Quality

  Ehsan. Akbari - Department of Electrical Engineering, Mazandaran University of Science and Technology ,Babol ,Iran.


This paper proposes the mitigation of grid voltage disturbances using a 7-level Packed U Cells (PUC7) based dynamic voltage restorer (DVR) solution . Which regulates the injection of the compensation voltage in series and synchronism with the grid during the voltage disturbance events, the auxiliary capacitor voltage, while controlling the PUC7 output current. A Seven-Level Packed U Cells (PUC7) inverter is composed of a smaller number of IGBTs and circuitry compared to similar structures. A voltage balancing controller is designed to apply the seven levels of the inverter; this is done by regulate the output voltage of the DC capacitors to a desired value in order to obtain seven levels at the output of the inverter. This feature enables the structure to be used to compensate for the power quality of power distribution networks. Nearest Level Control (NLC) in the inverter is used to create the desired waveform. The In-Phase control method is selected to control the proposed DVR and use the synchronous reference frame (SRF) method to detect the network voltage fluctuations. To verify and validate the proposed DVR performance, simulations are carried out in the MATLAB / SIMULINK software environment, and the results indicate the optimal performance and desirability of the proposed DVR to compensate for the voltage sag, swell and flicker power distribution grids. Theoretical analysis and simulation results are given to show the high performance of the proposed solution.


Packed U Cells Inverter, DVR, Multilevel Inverter, NLC switching, Voltage Compensation.

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COI code: NCEEM08_009

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Akbari, Ehsan., 2019, A New Concept of Multilevel DVR based on Seven-Level Packed U-Cell Inverter to Improve Power Quality, EighthMajor Electrical Engineering Conference, اصفهان, دانشگاه آزاد اسلامي واحد شهر مجلسي, the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
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Type: Nonprofit Institute
Paper No.: 1213
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