Abstract
Transformerless grid-connected inverters for photovoltaic (PV) applications provide several advantages such as reduced cost and volume as well as an increased efficiency. However, the removal of the transformer gives rise to several problems related to leakage currents and electromagnetic interferences (EMI). This paper presents different chaotic unipolar sine-pulse width modulation (C-USPWM) techniques for a transformerless grid-connected PV inverter based on parameter selection. The main objective behind this proposed chaotic modulation technique is to reduce the conducted EMI without worsening the power quality and the common-mode voltage (CMV). The method is validated through numerical simulations and experimental tests carried out on laboratory prototype of an optimized H5 inverter (oH5). The obtained results showed its superiority to the conventional unipolar sine-pulse width modulation (USPWM). We showed also that the appropriate parameter selection of the C-UPSWM could advantageously combine an improved EMI performance and an efficient control, making it possible to deliver a significant reduction of the peaks’ amplitudes in the frequency spectrum of the common-mode (CM) voltage.
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References
Kirthiga S, Jothi Swaroopan NM (2018) Highly reliable inverter topology with a novel soft computing technique to eliminate leakage current in grid-connected transformerless photovoltaic systems. Comput Electr Eng. https://doi.org/10.1016/j.compeleceng.2018.03.022
Khan MNH, Forouzesh M, Siwakoti YP et al (2020) Transformerless inverter topologies for single-phase photovoltaic systems: a comparative review. IEEE J Emerg Sel Top Power Electron 8:805–835. https://doi.org/10.1109/JESTPE.2019.2908672
Victor M et al (2008) Method of converting a direct current voltage from a source of direct current voltage, more specifically from a photovoltaic source of direct current voltage, into an alternating current voltage. US Patent 7411802.
Islam M, Mekhilef S (2015) H6-type transformerless single-phase inverter for grid-tied photovoltaic system. IET Power Electron 8(4):636–644. https://doi.org/10.1049/iet-pel.2014.0251
Zhang L, Sun K, Feng L, Wu H, Xing Y (2013) A family of neutral point clamped full-bridge topologies for transformerless photovoltaic grid-tied inverters. IEEE Trans Power Electron 28(2):730–739. https://doi.org/10.1109/TPEL.2012.2205406
Xiao H, Xie S, Chen Y, Huang R (2011) An optimized transformerless photovoltaic grid-connected inverter. IEEE Trans Ind Electron 58(5):1887–1895. https://doi.org/10.1109/TIE.2010.2054056
Pellitteri F et al (2020) A prototypal PCB board for the EMI characterization of SiC-based innovative switching devices. In: 20th mediterranean electrotechnical conference (MELECON), pp 52–56. https://doi.org/10.1109/MELECON48756.2020.9140633
Zhang Z, Hu Y, Chen X et al (2021) A review on conductive common-mode EMI suppression methods in inverter fed motor drives. IEEE Access 9:18345–18360. https://doi.org/10.1109/ACCESS.2021.3054514
Kraiem S, Hamouda M, Ben Hadj Slama J (2021) Conducted EMI reduction in transformerless PV grid-connected inverter based on PCB improvement. In: 12th international renewable energy congress (IREC), pp1–4. https://doi.org/10.1109/IREC52758.2021.9624812
Ashritha M, Sudheer ML (2020) Conducted EMI mitigation in flyback PFC converter. Electr Eng 102:563–571. https://doi.org/10.1007/s00202-019-00890-x
Satish Kumar M, Jhansi Rani A (2018) Reduction of conducted electromagnetic interference by using filters. Comput Electr Eng 72:169–178. https://doi.org/10.1016/j.compeleceng.2018.09.002
Bhargava A, Pommerenke D, Kam KW et al (2011) DC-DC buck converter EMI reduction using PCB layout modification. IEEE Trans Electromagn Compat 53(3):806–813. https://doi.org/10.1109/TEMC.2011.2145421
Li W, Gu Y, Luo H et al (2015) Topology review and derivation methodology of single-phase transformerless photovoltaic inverters for leakage current suppression. IEEE Trans Ind Electron 62(7):4537–4551. https://doi.org/10.1109/TIE.2015.2399278
Jiang D, Chen J, Shen Z (2019) Common mode EMI reduction through PWM methods for three-phase motor controller. CES Trans Electr Mach Syst 3(2):133–142. https://doi.org/10.30941/CESTEMS.2019.00019
Chen J, Jiang D, Shen Z et al (2020) Uniform distribution pulse width modulation strategy for three-phase converters to reduce conducted EMI and switching loss. IEEE Trans Ind Electron 67(8):6215–6226. https://doi.org/10.1109/TIE.2019.2939974
Zhang Z, Wei L, Yi P et al (2020) Conducted emissions suppression of active front end (AFE) drive based on random switching frequency PWM. IEEE Trans Ind Appl 56(6):6598–6607. https://doi.org/10.1109/TIA.2020.3016629
Kraiem S, Hamouda M Ben Hadj Slama J (2020) EMI reduction in transformerless photovoltaic grid-connected inverter via chaotic spwm control. In: 6th IEEE International Energy Conference (ENERGYCon), pp 210–215. https://doi.org/10.1109/ENERGYCon48941.2020.9236484
Zhang B, Wang X (2014) Chaos analysis and chaotic EMI suppression of DC-DC converters. Wiley, London
Li H, Liu Y, Lü J et al (2014) Suppressing EMI in power converters via chaotic spwm control based on spectrum analysis approach. IEEE Trans Ind Electron 61(11):6128–6137. https://doi.org/10.1109/TIE.2014.2308131
Jadeja R, Ved AD, Chauhan SK et al (2020) A random carrier frequency PWM technique with a narrowband for a grid-connected solar inverter. Electr Eng 102:1755–1767. https://doi.org/10.1007/s00202-020-00989-6
Kraiem S, Hamouda M, Ben Hadj Slama J (2020) Conducted EMI mitigation in transformerless PV inverters based on intrinsic MOSFET parameters. Microelectron Reliab. https://doi.org/10.1016/j.microrel.2020.113876
Kraiem S, Hamouda M, Ben Hadj Slama J (2021) Electromagnetic interference-based comparative study between transformerless H5 and optimised H5 grid-connected photovoltaic inverters. IET Sci Meas Technol 15(4):343–351. https://doi.org/10.1049/smt2.12035
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Kraiem, S., Hamouda, M. & Ben Hadj Slama, J. Design and implementation of a chaotic unipolar sine-pulse modulation technique for a transformerless single-phase grid-connected photovolatic inverter. Electr Eng 106, 645–653 (2024). https://doi.org/10.1007/s00202-023-02003-1
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DOI: https://doi.org/10.1007/s00202-023-02003-1