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Research Article |

Fixed Frequency SVPWM+PI Controlled LCL Shunt Active Power Filter in dq Frame for Microgrids

Author(s): Dr. Mehul Dansinh Solanki1*, Dr. Ashokkumar Parmar2, Dr. Jaydeepsinh Sarvaiya3, S. K. Joshi4, and Dr. Mayur V. Gojiya5

Published In : International Journal of Electrical and Electronics Research (IJEER)        Volume 13, Issue 4

Publisher : FOREX Publication

Published : 30 December 2025

e-ISSN : 2347-470X

Page(s) : 932-942

DOI: https://doi.org/10.37391/IJEER.130433

Abstract

This paper presents the design of simple, robust, and efficient shunt active power filter (SAPF) using a loop in loop (cascaded) PI controller and Space vector pulse width modulated synchronous reference frame (dq) controller to mitigate harmonics from a three-phase diode rectifier (nonlinear load) catering to variety of loads (R, and R-L), supplied by a microgrid (week grid) having plethora of distributed generator, exhibiting heuristic nature. The intermittent nature of DGs leads to variation in voltage and frequency, and load variation aggravates this situation further. Placement and availability of DGs in the microgrid lead to the variation in cable length, causing variation in the reactance presented between the source and the point of common coupling, where a SAPF is deployed. A robust control mechanism of SAPF has been presented here that gives compliance to IEEE-519 amidst the mentioned perturbations in voltage, frequency, and grid reactance using a passively damped LCL filter and a smaller DC-bus capacitor due to the presence of SVPWM control. A constant frequency switched Space Vector Pulse Width Modulation (SVPWM) control makes the SAPF simpler and more reliable. Further, a cascaded PI controller, one controlling DC-bus voltage and another controlling the filter’s current, makes it more efficient and reliable. Simulation and comparative analytical results of SVPWM with that of Sinusoidal PWM (SPWM) validate the design’s suitability for enhancing power quality in the given system.

Keywords: Cascaded PI control, LCL filter, Microgrid, SAPF, SVPWM control.




Dr. Mehul Dansinh Solanki*, Assistant Professor in Electrical Engineering, Shantilal Shah Engineering College, Bhavnagar affiliated to Gujarat Technological University, Gujarat, India; Email: mdsolanki@elec.ssgec.ac.in

Dr. Ashokkumar Parmar, Associate Professor in Electrical Engineering, Shantilal Shah Engineering College, Bhavnagar affiliated to Gujarat Technological University, Gujarat, India; Email: abparmar80@gmail.com

Dr. Jaydeepsinh Sarvaiya, Assistant Professor in Electrical Engineering, Shantilal Shah Engineering College, Bhavnagar affiliated to Gujarat Technological University, Gujarat, India; Email: Jbs201182@gmail.com

S. K. Joshi, Retired Professor and Head of Electrical Engineering, Faculty of Technology and Engineering, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India; Email: skjoshi@ieee.org

Dr. Mayur V. Gojiya, Assistant Professor in Electrical Engineering, Shantilal Shah Engineering College, Bhavnagar affiliated to Gujarat Technological University, Gujarat, India; Email: mayur.gojiya010@gmail.com

    [1] M. Ali, M. Yaqoob, L. Cao, and K. H. Loo, "Enhancement of DC-bus voltage regulation in cascaded converter system by a new sensorless load current feedforward control scheme," IET Power Electronics, vol. 14, no. 8, pp. 1457–1467, Jun. 2021. [Online]. Available: https://ietresearch.onlinelibrary.wiley.com/doi/full/10.1049/pel2.12123
    [2] A. Timbus, M. Liserre, R. Teodorescu, P. Rodriguez, and F. Blaabjerg, "Evaluation of current controllers for distributed power generation systems," IEEE Trans. Power Electron., vol. 24, no. 3, pp. 654–664, Mar. 2009. [Online]. Available: https://ieeexplore.ieee.org/document/4801680
    [3] H. M. Kojabadi, B. Yu, I. A. Gadoura, L. Chang, and M. Ghribi, "A novel DSP-based current-controlled PWM strategy for single phase grid connected inverters," IEEE Trans. Power Electron., vol. 21, no. 4, pp. 985–993, Jul. 2006. [Online]. Available: https://ieeexplore.ieee.org/document/7869729
    [4] J. N. da Silva, A. J. Sguarezi Filho, D. A. Fernandes, A. P. Tahim, E. R. da Silva, and F. F. Costa, "A discrete repetitive current controller for single-phase grid-connected inverters," in Proc. Brazilian Power Electron. Conf. (COBEP), Nov. 2017, pp. 1–6. [Online]. Available: https://ieeexplore.ieee.org/document/8257339
    [5] S. K. Pati, P. K. Sahu, and S. Jena, "Power quality enhancement of shunt active power filters by sliding mode control technique," in Advances in Intelligent Computing and Communication, ICAC 2024, Lecture Notes in Networks and Systems, vol. 1325, M. N. Mohanty and S. Das, Eds. Singapore: Springer, 2025. [Online]. Available: https://doi.org/10.1007/978-981-96-4071-3_30
    [6] V. Narasimhulu, D. V. Ashok Kumar, and C. Sai Babu, "Fuzzy logic control of SLMMC-based SAPF under nonlinear loads," Int. J. Fuzzy Syst., vol. 22, pp. 428–437, 2020. [Online]. Available: https://doi.org/10.1007/s40815-019-00622-0
    [7] M. Caoyuan, L. Gang, L. Jianhua, W. Chonglin, W. Zhi, and Z. Wanyun, "The space vector control of the SAPF in the condition of non-ideal source," in Proc. Int. Conf. Mechanic Autom. Control Eng., Jun. 2010, pp. 4006–4009. [Online]. Available: https://doi.org/10.1109/MACE.2010.5535914
    [8] L. F. Monteiro, J. L. Afonso, J. G. Pinto, E. H. Watanabe, M. Aredes, and H. Akagi, "Compensation algorithms based on the pq and CPC theories for switching compensators in micro-grids," in Proc. Brazilian Power Electron. Conf., Sep. 2009, pp. 32–40. [Online]. Available: https://ieeexplore.ieee.org/document/5347593
    [9] C. C. Gomes, A. F. Cupertino, and H. A. Pereira, "Damping techniques for grid-connected voltage source converters based on LCL filter: An overview," Renew. Sustain. Energy Rev., vol. 81, pp. 116–135, Jan. 2018. [Online]. Available: https://www.sciencedirect.com/science/article/pii/S1364032117311206
    [10] Y. Wang, J. Z. Liu, and X. T. Xu, "Study of a new grid-connected LCL filter for shunt active power filter," in Proc. IEEE Conf. Expo Transp. Electrification Asia-Pacific (ITEC Asia-Pacific), Aug. 2014, pp. 1–6. [Online]. Available: https://ieeexplore.ieee.org/document/6940955
    [11] D. Khan, P. Hu, S. Habib, M. Waseem, Z. Lin, and E. M. Ahmed, "A resonant damping control and analysis for LCL-type grid-connected inverter," Energy Reports, vol. 8, pp. 911–928, Nov. 2022. [Online]. Available: https://www.sciencedirect.com/science/article/pii/S2352484721014207
    [12] M. D. Solanki and S. K. Joshi, "Robust and novel carrier based unipolar space vector pulse width modulation control of single-phase electric spring, using a lead-lag compensator," Comput. Electr. Eng., 2024. [Online]. Available: https://doi.org/10.1016/j.compeleceng.2024.109692
    [13] M. Karimi-Ghartema, Enhanced Phase-Locked Loop Structures for Power and Energy Applications. Hoboken, NJ, USA: John Wiley & Sons, Mar. 2014
    [14] P. C. Krause, O. Wasynczuk, S. D. Sudhoff, and S. Pekarek, Analysis of Electric Machinery and Drive Systems. New York, NY, USA: IEEE Press, Feb. 2002.
    [15] M. Liserre, F. Blaabjerg, and S. Hansen, "Design and control of an LCL-filter-based three-phase active rectifier," IEEE Trans. Ind. Appl., vol. 41, no. 5, pp. 1281–1291, 2005. doi: 10.1109/TIA.2005.853373
    [16] Analog Devices, "Chapter 8 analog filters," in Basic Linear Design Handbook. Norwood, MA, USA: Analog Devices, Inc., 2012. [Online]. Available: https://www.analog.com/media/en/training-seminars/design-handbooks/basic-linear-design/chapter8.pdf
    [17] IEEE Standard for Harmonic Control in Electric Power Systems, IEEE Std 519-2022 (Revision of IEEE Std 519-2014), pp. 1–31, Aug. 2022. doi: 10.1109/IEEESTD.2022.9848440

Dr. Mehul Dansinh Solanki, Dr. Ashokkumar Parmar, Dr. Jaydeepsinh Sarvaiya, S. K. Joshi, Dr. Mayur V. Gojiya (2025), Fixed Frequency SVPWM+PI Controlled LCL Shunt Active Power Filter in dq Frame for Microgrids. IJEER 13(4), 932-942. DOI: 10.37391/IJEER.130433.