A Control Scheme for a Quasi-Z Source Three-Phase Inverter

Abstract

This paper presents a novel control scheme for a three-phase quasi-z source inverter (qZSI) using a capacitor voltage and input current-based sinusoidal pulse width modulation (SPWM) technique. The proposed scheme combines the advantages of both qZSI and SPWM techniques to achieve improved performance. The SPWM technique utilizes a sinusoidal modulation signal, which is compared with a high-frequency triangular carrier wave and two shoot-through (ST) references to determine the switching states for the three-phase qZSI. The positive and negative ST references are obtained from the capacitor voltages and input current, allowing for control of the DC bus voltage and ST states of the inverter. Additionally, the proposed control scheme generates the three-phase modulation signal through decoupling control in the dq reference frame. The detailed analysis of the control scheme includes its operating principle, transient state, steady-state responses, and the effects of parameter variations. Simulation studies are conducted using MATLAB/Simulink to assess the performance of the three-phase qZSI under the proposed control scheme. The simulation results demonstrate the effectiveness of the control scheme in terms of output voltage quality, DC bus voltage control, and robustness against reference variations. Overall, the proposed capacitor voltage and input current-based SPWM control scheme for the three-phase qZSI shows promising performance improvements and robustness, as confirmed through comprehensive simulation studies.

Keywords

• DC-AC Inverter
• Modulation Scheme
• Quasi-z Source Inverter

References

1. Anderson, J., & Peng, F. Z. (2008a, October 5-9). A Class of Quasi-Z-Source Inverters. In: Proceedings of the IEEE Industry Applications Society Annual Meeting (IAS), Edmonton, Canada. doi:10.1109/08IAS.2008.301
2. Anderson, J., & Peng, F. Z. (2008b, June 15-19). Four quasi-Z-Source inverters. In: Proceedings of the 39th IEEE Annual Power Electronics Specialists Conference (PESC), (pp. 2743-2749), Rhodes, Greece. doi:10.1109/PESC.2008.4592360
3. Cao, D., & Peng, F. Z. (2009, February 15-19). A family of Z-source and Quasi-Z-source DC-DC converters. In: Proceedings of the Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), (pp. 1097-1101), Washington, USA. doi:10.1109/APEC.2009.4802800
4. Devaraj, U., Ramalingam, S., & Sambasivam, D. (2019). Evaluation of Modulation Strategies for Single-Phase Quasi-Z-Source Inverter. Journal of The Institution of Engineers (India): Series B, 100(4), 333-341. doi:10.1007/s40031-019-00378-z
5. Elmorshedy, M. F., Essawy, I. J. A., Rashad, E. M., Islam, M. R., & Dabour, S. M. (2023). A Grid-Connected PV System Based on Quasi-Z-source Inverter with Maximum Power Extraction. IEEE Transactions on Industry Applications, 1-11. doi:10.1109/TIA.2023.3275557
6. Endiz, M. S., Akkaya, R. (2022). Performance Analysis of Z-Source Inverter Control Techniques. El-Cezerî Journal of Science and Engineering, 9(2), 625-633. doi:10.31202/ecjse.990144
7. Garcia-Vazquez, C. A., Sanchez-Sainz, H., Gonzalez-Rivera, E., Llorens-Iborra, F., & Fernandez-Ramirez, L. M. (2020, June 9-12). Decoupled Maximum Constant Boost Control for Quasi-Z-Source Inverter. In: Proceedings of the IEEE International Conference on Environment and Electrical Engineering and IEEE Industrial and Commercial Power Systems Europe (EEEIC / I & CPS Europe), Madrid, Spain. doi:10.1109/EEEIC/ICPSEUROPE49358.2020.9160623
8. Hong, D., & Cha, H. (2021). LED Current Balancing Scheme Using Current-Fed Quasi-Z-Source Converter. IEEE Transactions on Power Electronics, 36(12), 14187-14194. doi:10.1109/TPEL.2021.3083842

9. Li, J., Chen, D., & Jiang, J. (2022). Single-Phase ZVS Quasi-Z-Source Inverter with High Voltage Gain. IEEE Transactions on Power Electronics, 37(4), 4346-4357. doi:10.1109/TPEL.2021.3121712
10. Liu, J., Wu, J., Qiu, J., & Zeng, J. (2019). Switched Z-Source/Quasi-Z-Source DC-DC converters with reduced passive components for photovoltaic systems. IEEE Access, 7, 40893-40903. doi:10.1109/ACCESS.2019.2907300
11. Mohammadi, M., Mirzaee, A., Magnone, P., Moghani, J., & Mattavelli, P. (2020). Performance improvement of pulse width-amplitude modulation-based quasi-Z-source inverters: Analysis and implementation. International Journal of Circuit Theory and Applications, 48(10), 1786-1799. doi:10.1002/CTA.2808
12. Nguyen, M.-K., Choi, Y.-O. (2021). Modulation Technique for Modified Active Quasi-Z-Source Inverter with Common-Mode Voltage Reduction. Electronics, 10(23), 2968. doi:10.3390/ELECTRONICS10232968
13. Padmavathi, P., & Natarajan, S. (2020). Single switch quasi Z-source based high voltage gain DC-DC converter. International Transactions on Electrical Energy Systems, 30(7), e12399. doi:10.1002/2050-7038.12399
14. Paikray, A., Prudhvi, S., & Nayak, S. K. (2022, December 14-17). Improved Enhanced-Boost Quasi-Z-Source Inverter. In: Proceedings of the 10th IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES-2022), Jaipur, India. doi:10.1109/PEDES56012.2022.10080512
15. Parla, G., & Özdemir, M. (2022). Design of a Three Phase Z-Source Inverter for Photovoltaic Systems. Dicle University Journal of Engineering, 13(2), 253-261. doi:10.24012/dumf.1100464
16. Peng, F. Z. (2002, October 13-18). Z-source inverter. In: Proceedings of the Conference Record of the 2002 IEEE Industry Applications Conference, 37th IAS Annual Meeting, vol. 2, (pp. 775-781), Pittsburgh, USA. doi:10.1109/IAS.2002.1042647
17. Peng, F. Z. (2003). Z-source inverter. IEEE Transactions on Industry Applications, 39(2), 504-510. doi:10.1109/TIA.2003.808920
18. Peng, F. Z., Yuan, X., Fang, X., & Qian, Z. (2003). Z-source inverter for adjustable speed drives. IEEE Power Electronics Letters, 1(2), 33-35. doi:10.1109/LPEL.2003.820935
19. Poorali, B., & Adib, E. (2020). Soft-Switched High Step-Up Quasi-Z-Source DC-DC Converter. IEEE Transactions on Industrial Electronics, 67(6), 4547-4555. doi:10.1109/TIE.2019.2922948
20. Sabeur, N., Mekhilef, S., & Masaoud, A. (2018). A Simplified Time-Domain Modulation Scheme-Based Maximum Boost Control for Three-Phase Quasi-Z Source Inverters. IEEE Journal of Emerging and Selected Topics in Power Electronics, 6(2), 760-769. doi:10.1109/JESTPE.2017.2763974
21. Sun, D., Ge, B., Bi, D., & Peng, F. Z. (2013). Analysis and control of quasi-Z source inverter with battery for grid-connected PV system. International Journal of Electrical Power & Energy Systems, 46, 234-240. doi:10.1016/J.IJEPES.2012.10.008
22. Xu, G., Chen, D., & Qu, A. (2020, October 19-21). Simple Boost Modified Space Vector Modulation Strategy for Three-Phase Quasi-Z-Source Inverter. In: Proceedings of the 46th Annual Conference of the IEEE Industrial Electronics Society, (pp. 5365-5370), Singapore. doi:10.1109/IECON43393.2020.9255384
23. Zhao, Z., Elgendy, M. A., Armstrong, M., & Muhammad, M. (2019, September 3-5). Constant boost control with third harmonic injection for quasi-Z source inverter used in PV grid-connected system. In: Proceedings of the 21st European Conference on Power Electronics and Applications (EPE'19 ECCE Europe), Genova, Italy. doi:10.23919/EPE.2019.8915379