Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
권호 표지
DOI QR코드

DOI QR Code

Comparative analysis of switched inductor-based quasi-Z-source inverters

  • Afzal, Raheel (State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology) ;
  • Tang, Yu (State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology) ;
  • Song, Yinghao (State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology)
  • Received : 2021.11.30
  • Accepted : 2022.06.03
  • Published : 2022.10.20
⟨ Previous Next ⟩

Abstract

A switched-inductor quasi-Z-source inverter (SI-qZSI) exhibits a higher gain than a quasi-Z-source inverter (qZSI) while keeping continuous input current. Like renewable power generation systems that result in low input voltage, SI-qZSI exhibits boosting ability that may not be adequate in some cases. A voltage-lifting unit can be formed by alternating one of the diodes in the switch inductor unit. A high step-up topology, such as qZSI with voltage-lifting unit (qZSI-VL), can be derived. The boosting factor of qZSI-VL can be enhanced further by retaining all the merits of the SI-qZSI. The overall conduction loss can be reduced under the same output and input voltage for the qZSI-VL, thereby enhancing efciency. In this study, the analysis of the qZSI-VL and its operating principle are explained. The characteristic comparison of qZSI-VL with the SI-qZSI and qZSI is discussed in detail. Finally, the prototypes of qZSI-VL and SI-qZSI are designed in the lab. Simulation and experiments are performed to verify the analysis.

Keywords

Acknowledgement

Hebei Province Science Fund for Distinguished Young Scholars, grant no. E2020202140, Yu Tang. Program for Top 100 Innovative Talents in Colleges and Universities of Hebei Province, grant no. SLRC2019025, Yu Tang. Hebei Provincial Central Government Guided Local Science and Technology Development Fund Project, grant no. 216Z4401G, Yu Tang.

References

  1. Peng, F.Z.: Z-source inverter. IEEE Trans. Ind. Appl. 39(2), 504-510 (2003) https://doi.org/10.1109/TIA.2003.808920
  2. Peng, F.Z., Joseph, A., Wang, J., Shen, M.: Z-source inverter for motor drives. IEEE Trans. Power Electron. 20(4), 857-863 (2009)
  3. Li, D., Loh, P.C., Zhu, M., Gao, F.: Cascaded multicell trans-Zsource inverters. IEEE Trans. Power Electron. 28(2), 826-836 (2013) https://doi.org/10.1109/TPEL.2012.2205709
  4. Vinnikov, D., Roasto, I., Strzelecki, R., Adamowicz, M.: Step-up DC/DC converters with cascaded quasi-Z-source network. IEEE Trans. Ind. Electron. 59(10), 3727-3736 (2012) https://doi.org/10.1109/TIE.2011.2178211
  5. Li, D., Loh, P.C., Zhu, M., Gao, F., Blaabjerg, F.: Cascaded multicell trans-Z-source inverters. IEEE Trans. Power Electron. 28(2), 826-836 (2013) https://doi.org/10.1109/TPEL.2012.2205709
  6. Strzelecki, R., Adamowicz, M., Strzelecka, N.: New type T-source inverter. In: Proc. Compatibility and Power Electron, pp. 191-195 (2009)
  7. Loh, P.C., Li, D., Blaabjerg, F.: Γ-Z-source inverter. IEEE Trans. Power Electron. 28(11), 4880-4884 (2013) https://doi.org/10.1109/TPEL.2013.2243755
  8. Qian, W., Peng, F.Z., Ch, H.: Trans-Z-source inverter. IEEE Trans. Ind. Electron. 26(12), 3453-3463 (2011) https://doi.org/10.1109/TPEL.2011.2122309
  9. Anderson, J., Peng, F.Z.: A class of quasi-Z-source inverters. In: Proc. IEEE IAS Annu. Meeting, pp. 1-7 (2008)
  10. Adamowicz, M., Strzelecki, R., Peng, F.Z.: New type LCCT-Zsource inverters. In: Proc. EPE 14th, pp. 1-10 (2011)
  11. Peng, F.Z., Shen, M.S., Qian, Z.: Maximum boost control of the Z-source inverter. IEEE Trans. Power Electron. 20(4), 833-838 (2005) https://doi.org/10.1109/TPEL.2005.850927
  12. Liu, Y., Ge, B.: Overview of space vector modulations for threephase Z-source/quasi-Z-source inverters. IEEE Trans. Power Electron. 29(4), 2098-2108 (2014) https://doi.org/10.1109/TPEL.2013.2269539
  13. Cai, C., Qu, Y., Sheng, K.: Extend boost Z-source inverter. Proc. CSEE 31(7), 259-266 (2005)
  14. Li, D., Loh, P.C., Zhu, M., Gao, F.: Generalized multicell switched-inductor and switched-capacitor Z-source inverters. IEEE Trans. Power Electron. 28(2), 837-848 (2013) https://doi.org/10.1109/TPEL.2012.2204776
  15. Wei, M., Loh, P.C., Chi, J.: Six transformer based asymmetrical embedded Z-source inverters. In: Proc. IEEE 28st APEC, pp. 273-2279 (2013)
  16. Nguyen, M.K., Lim, Y.C., Cho, G.B.: Switched-inductor quasi-Zsource inverter. IEEE Trans. Power Electron. 26(11), 3183-3191 (2011) https://doi.org/10.1109/TPEL.2011.2141153
  17. Zhou, Y.F., Huang, W.X., Zhao, J.Y.: Tapped inductor quasi-Zsource inverter. Proc. CSEE 32(27), 126-134 (2012)
  18. Tang, Y., Xie, S.J.: Improved Z-source inverters with reduced Z-source capacitor voltage stress and soft-start capability. IEEE Trans. Power Electron. 24(2), 409-415 (2009) https://doi.org/10.1109/TPEL.2008.2006173
  19. Nguyen, M.-K., Lim, Y.-C., Choi, J.-H.: Two switched-inductor quasi-Z-source inverter. IET Power Electron. 5(7), 1017-1025 (2012) https://doi.org/10.1049/iet-pel.2011.0297