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Resonant Damping Analysis of Output Filter of Grid-Connected Inverters

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Abstract

The design performance of the grid-connected inverter directly determines the quality of the grid-connected output current as an interface between the distributed power generation system and the power grid. Grid-connected inverters usually use output filters to attenuate high-frequency harmonics, and output filters’ filtering performance directly determines the system's performance. Based on the analysis of the existing output filter topology and filtering performance, an LLCLC-type grid-connected inverter output filter is proposed. To suppress filter resonance spikes for stable system operation, Rs and Rs-Cs methods are used to damp the LCL-type, LLCL-type and LLCLC-type filters. The damping effect on resonant spikes and high-frequency harmonic attenuation is thoroughly analyzed and compared for different damping methods applied to different filters. The analysis shows that LCL-type and LLCL-type filters have the same characteristic that the better the damping effect, the worse its trapping effect on the switching frequency harmonics. However, the trapping effect of LLCLC-type filters on switching frequency harmonics is not weakened by damping, so its overall filtering effect will be significantly better than that of LCL-type and LLCL-type filters under the same device volume cost, which is an outstanding advantage of LLCLC-type filters. Both simulation and experimental results verify the correctness and effectiveness of the proposed LLCLC-type output filter structure and resonant spike damping technique.

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Abbreviations

u g :

Power grid voltage

u con :

Output voltage of the grid-connected inverter

i g :

Grid-side inductive current

i b :

High-frequency harmonic attenuating branch current

i con :

Inverter-side inductor current

L con :

Inverter-side inductor

L f :

High-frequency attenuation branch circuit inductor

L g :

Grid-side inductor

C f :

High-frequency attenuation branch circuit capacitor

f res :

Inherent resonant frequencies

f s_LLCL, f s_LLCLC :

The series resonant frequencies of the high-frequency harmonic attenuation branches of the LLCL and LLCLC filters

f h :

High-frequency resonant frequency

f s :

The switching frequency

G PR :

Proportional resonance controller

References

  1. Venkatasamy B, Kalaivani L (2021) Modeling and power quality analysis of grid-connected PV inverter with active and reactive power injection mode. J Electr Eng Technol 16:1375–1387

    Article  Google Scholar 

  2. Song Y et al (2023) Utilization of energy storage and hydrogen in power and energy systems: viewpoints from five aspects. CSEE J Power Energy Syst 9(1):1–7

    Google Scholar 

  3. Sakthivel NK, Sutha S (2023) Single stage grid-connected flyback inverter with optimal PID controller for harmonic distortion analysis. J Electr Eng Technol 18:2153–2168

    Article  Google Scholar 

  4. Praiselin WJ, Edward JB (2022) Enhancement of power-sharing using multivariable angle droop control for inverter interfaced distributed generations in a micro-grid. J Electr Eng Technol 17:3155–3167

    Google Scholar 

  5. Sreekumar S, Savier JS (2023) A novel comparative approach for estimating maximum penetration capacity of grid connected solar photovoltaic system in distribution network. J Electr Eng Technol

  6. Chen Y, Wang W (2023) A novel improved droop control for grid-supporting inverter combined with the virtual synchronous generator control. J Electr Eng Technol 18:1601–1611

    Article  Google Scholar 

  7. Sheng H, Zhu Q, Tao J et al (2023) Distribution network reconfiguration and photovoltaic optimal allocation considering harmonic interaction between photovoltaic and distribution network. J Electr Eng Technol

  8. Sunil Kumar C, Puttamadappa C, Chandrashekar YL (2023) Power quality improvement in grid integrated PV systems with SOA optimized active and reactive power control. J Electr Eng Technol 18:735–750

    Article  Google Scholar 

  9. Maurya R, Prakash S, Singh AK (2023) Challenges, configuration, control, and scope of DC microgrid systems: a review. J Electr Eng Technol 18:1655–1674

    Article  Google Scholar 

  10. Kan S, Ruan X, Huang X (2023) Compensation of second harmonic current based on bus voltage ripple limitation in single-phase photovoltaic grid-connected inverter. IEEE Trans Industr Electron 70(7):7525–7532

    Article  Google Scholar 

  11. Kan S, Ruan X, Huang X, Dang H (2021) Second harmonic current reduction for flying capacitor clamped boost three-level converter in photovoltaic grid-connected inverter. IEEE Trans Power Electron 36(2):1669–1679

    Article  Google Scholar 

  12. Cai Y, He Y, Zhou H, Liu J (2021) Active-damping disturbance-rejection control strategy of LCL grid-connected inverter based on inverter-side-current feedback. IEEE J Emerg Select Top Power Electron 9(6):7183–7198

    Article  Google Scholar 

  13. Jalili K, Bernet S (2009) Design of LCL filters of active-front-end two-level voltage-source converters. IEEE Trans Ind Electron 56(5):1674–1689

    Article  Google Scholar 

  14. Wu W, He Y, Blaabjerg F (2012) An LLCL power filter for single-phase grid-tied inverter. IEEE Trans Power Electron 27(2):782–789

    Article  Google Scholar 

  15. Cai Y, He Y, Zhang H, Zhou H, Liu J (2023) Integrated design of filter and controller parameters for low-switching-frequency grid-connected inverter based on harmonic state-space model. IEEE Trans Power Electron 38(5):6455–6473

    Article  Google Scholar 

  16. Wu T-F, Misra M, Lin L-C, Hsu C-W (2017) An improved resonant frequency based systematic LCL filter design method for grid-connected inverter. IEEE Trans Ind Electron 64(8):6412–6421

    Article  Google Scholar 

  17. Poongothai C, Vasudevan K (2019) Design of LCL filter for grid-interfaced PV SYSTEM BASED ON COST MINIMization. IEEE Trans Ind Appl 55(1):584–592

    Article  Google Scholar 

  18. Solatialkaran D, Khajeh KG, Zare F (2021) A novel filter design method for grid-tied inverters. IEEE Trans Power Electron 36(5):5473–5485

    Article  Google Scholar 

  19. Wu W, Huang M, Sun Y, Wang X, Blaabjerg F (2012) A composite passive damping method of the LLCL-filter based grid-tied inverter. In: 2012 3rd IEEE international symposium on power electronics for distributed generation systems (PEDG), Aalborg, Denmark, pp 759–766

  20. Dong M, Ma H, Bai Z (2019) Analysis and optimizing method of transient performance for LCL-based grid-connected inverter with passive damping. In: 2019 10th international conference on power electronics and ECCE Asia (ICPE 2019 - ECCE Asia), Busan, Korea (South), pp 2956–2961

  21. Naresh P, Anirudh C, Seshadri Sravan Kumar V (2020) Comparison of passive damping based LCL filter design methods for grid-connected voltage source converters. In: 2020 international conference on power, instrumentation, control and computing (PICC), Thrissur, India, pp 1–6

  22. Huang M, Blaabjerg F, Loh PC (2014) The overview of damping methods for three-phase grid-tied inverter with LLCL-filter. In: 2014 16th European conference on power electronics and applications, Lappeenranta, Finland, pp 1–9

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Acknowledgements

This work was supported by the Natural Science Foundation of Anhui Provincial Education Department under Grant KJ2021A0864 and Talent Introduction Project of Anhui Science and Technology University under Grant DQYJ201901.

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  1. Department of Electrical and Electronic Engineering, Anhui Science and Technology University, Bengbu, China

    XiaoJie Zhou

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Zhou, X. Resonant Damping Analysis of Output Filter of Grid-Connected Inverters. J. Electr. Eng. Technol. 19, 2265–2281 (2024). https://doi.org/10.1007/s42835-023-01700-y

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