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Volume 12
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Article

Combined DC-Link Fed Parallel-VSI-Based DSTATCOM for Power Quality Improvement of a Solar DG Integrated System

by
P.V.V. Satyanarayana
1,
A. Radhika
2,
Ch. Rami Reddy
3,
B. Pangedaiah
4,
Luigi Martirano
5,*,
Andrea Massaccesi
5,
Aymen Flah
6 and
Michał Jasiński
7,*
1
Department of Electrical and Electronics Engineering, Malla Reddy Engineering College, Secunderabad 500100, India
2
Department of Electronics and Communication Engineering, Anurag College of Engineering, Ghatkesar, Hyderabad 501301, India
3
Department of Electrical and Electronics Engineering, Joginpally B. R. Engineering College, Hyderabad 500075, India
4
Department of Electrical and Electronics Engineering, Lakireddy Bali Reddy College of Engineering, Mylavaram 521230, India
5
Department of Astronautical, Electrical and Energy Engineering (DIAEE), Sapienza University of Rome, 00184 Rome, Italy
6
National Engineering School of Gabès, Processes, Energy, Environment and Electrical Systems, University of Gabès, LR18ES34, Gabes 6072, Tunisia
7
Faculty of Electrical Engineering, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland
*
Authors to whom correspondence should be addressed.
Electronics 2023, 12(3), 505; https://doi.org/10.3390/electronics12030505
Submission received: 1 December 2022 / Revised: 11 January 2023 / Accepted: 13 January 2023 / Published: 18 January 2023
(This article belongs to the Special Issue Smart Energy Communities: State of the Art and Future Developments)
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Abstract

In present day power systems, Power Quality (PQ) issues are causing great concern owing to the increased use of power electronic controlled drives and fluctuating and other non-linear loads. This problem is further aggravated by a steady increase in the integration of renewable energy-based Distribution Generation (DG), employing power electronic converters to distribution systems. Custom power devices with suitable control strategies provide an effective solution to these power quality issues. In this work, a typical three-phase distribution system supplying non-linear load and with DG integration is considered. A shunt connected DSTATCOM at PCC of the system is employed to mitigate power quality concerns. Initially, a parallel-VSI based DSTATCOM configuration, employing individual DC-Link and working basically on the principle of current sharing, has been proposed. The analysis is carried out for variable load conditions for PQ enhancement making use of a more effective control theory viz. Instantaneous Real-Reactive Power (IRP) theory for the generation of suitable switching patterns to the individual VSIs of the parallel DSTATCOM. Further, an improvement over the above configuration viz. combined/common DC-Link-fed parallel DSTATCOM is proposed. This configuration has the advantages of minimized sensing elements, reliable operation and low-cost compensation. A similar analysis is carried out for PQ improvement, making use of the same IRP theory with some modifications (known as MIRP theory). The effectiveness of this configuration is established from the simulation results. In all the above cases, the analyses are carried out using MATLAB/Simulink platform and the simulation results are presented in detail. Thus, the proposed parallel VSIs-based DSTATCOM configurations employing suitable control strategies provide effective solutions for power quality issues under varying load conditions in conventional distribution systems.
Keywords: DSTATCOM; power quality; distributed generation; PV system; common DC link DSTATCOM; power quality; distributed generation; PV system; common DC link

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MDPI and ACS Style

Satyanarayana, P.V.V.; Radhika, A.; Reddy, C.R.; Pangedaiah, B.; Martirano, L.; Massaccesi, A.; Flah, A.; Jasiński, M. Combined DC-Link Fed Parallel-VSI-Based DSTATCOM for Power Quality Improvement of a Solar DG Integrated System. Electronics 2023, 12, 505. https://doi.org/10.3390/electronics12030505

AMA Style

Satyanarayana PVV, Radhika A, Reddy CR, Pangedaiah B, Martirano L, Massaccesi A, Flah A, Jasiński M. Combined DC-Link Fed Parallel-VSI-Based DSTATCOM for Power Quality Improvement of a Solar DG Integrated System. Electronics. 2023; 12(3):505. https://doi.org/10.3390/electronics12030505

Chicago/Turabian Style

Satyanarayana, P.V.V., A. Radhika, Ch. Rami Reddy, B. Pangedaiah, Luigi Martirano, Andrea Massaccesi, Aymen Flah, and Michał Jasiński. 2023. "Combined DC-Link Fed Parallel-VSI-Based DSTATCOM for Power Quality Improvement of a Solar DG Integrated System" Electronics 12, no. 3: 505. https://doi.org/10.3390/electronics12030505

APA Style

Satyanarayana, P. V. V., Radhika, A., Reddy, C. R., Pangedaiah, B., Martirano, L., Massaccesi, A., Flah, A., & Jasiński, M. (2023). Combined DC-Link Fed Parallel-VSI-Based DSTATCOM for Power Quality Improvement of a Solar DG Integrated System. Electronics, 12(3), 505. https://doi.org/10.3390/electronics12030505

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