Design and Experimental Investigation of Modified Switched Coupled Inductor Quasi Z-Source Cascaded Multilevel Inverter

Abstract

This paper proposes Switched coupled inductor (SCL) based quasi-Z- Source cascaded multilevel inverter (qZS-CMI), (SCL qZS-CMI) using nearest level modulation (NLM) technique in this paper. The proposed inverter introduces appealing advantages over conventional qZS-CMI such as lower component voltage stress, improved output power quality and efficiency. Both simulation and experimental verification have been carried out for SCL qZS-CMI with a power rating of 250W to validate the above claims.

Keywords

• Switched Coupled Inductor,Inductor quasi Z-Source,Cascaded Multilevel,Inverter,Nearest level modulation

References

1. Errabelli R.R. and Mutschler P., “Fault- tolerant voltage source inverter for permanent magnet drives” , IEEE Trans. Power Electron. 27: 500-508, 2012.
2. Peng F.Z., “Z-source inverter” , IEEE Trans. Ind. Appl, 39: 504-510, 2003.
3. Xiao W., Ozog N. , Dunford W.G., “Topology study of photovoltaic interface for maximum power point tracking”, IEEE Trans. Ind. Electron., 54: 1696-1704, 2007.
4. Li W., He X., “Review of nonisolated high-step-up DC/DC converters in photovoltaic grid-connected applications”, IEEE Trans. Ind. Electron, 58: 1239-1250, 2011.
5. Carrasco J.M., Franquelo L.G.,Bialasiewicz J.T., Galvan E., Guisado R.C.P., Prats M.A.M., Leon J.I., Moreno-Alfonso N., “Power-electronic systems for the grid integration of renewable energy sources: A survey”, IEEE Trans. Ind. Electron ,53: 1002-1016, 2006.
6. Banaei M.R., Dehghanzadeh A.R., Salary E., Khounjahan H., Alizadeh R., “Z-source-based multilevel inverter with reduction of switches”, IET Power Electronics, 5: 385-392, 2011.
7. Mohamad Reza Banaei, Ali Reza Dehghanzadeh, Ali Fazel, Aida Baghbany Oskouei., “Switching algorithm for single Z-source boost multilevel inverter with ability of voltage control”, IET Power Electronics, 6: 1350-1359, 2012.
8. Babaei E., Gowgani S.S., Sabahi M., “A new cascaded multilevel inverter with series and parallel connection ability of DC voltage sources”, Turkish J. Electr. Eng. Comput. Sci, 23: 85-102, 2015.

9. Chabni F., Taleb R., Helaimi M., “ANN-based SHEPWM using a harmony search on a new multilevel inverter topology”, Turkish J. Electr. Eng. Comput. Sci., 25: 4867-4879, 2017.
10. Toopchi Khosroshahi M., Ajami A., Mokhberdoran A.O., Jannati Oskuee M., “Multilevel hybrid cascade-stack inverter with substantial reduction in switches number and power losses”, Turkish J. Electr. Eng. Comput. Sci., 23: 987-1000, 2015.
11. Ge B., Abu-Rub H., Peng F., Lei Q., de Almeida A., Ferreira F., Sun D., Liu L., “An energy stored quasi-Z-source inverter for application to photovoltaic power system”. IEEE Trans. Ind. Electron, 60: 4468-4481, 2013.
12. Vinnikov D., Roasto I., Strzelecki R., Adamowicz M., “Step-up DC/DC converters with cascaded quasi-Z-source network”, IEEE Trans. Ind. Electron, 59: 3727-3736,2012.
13. Li Y., Jiang S., Cintron-Rivera J.G., Peng F.Z., “Modeling and control of quasi-Z-source inverter for distributed generation applications”, IEEE Trans. Ind. Electron., 60: 1532-1541, 2013.
14. Liu Y., Ge B., Abu-Rub H., Peng F.Z., “Control system design of battery-assisted quasi-Z-source inverter for grid-tie photovoltaic power generation”, IEEE Trans. Sustain. Energy, 4: 99-1001, 2013.
15. Shen M., Peng F.Z., “Operation modes and characteristics of the Z-source inverter with small inductance or low power factor”, IEEE Trans. Ind. Electron, 55: 89-96, 2008.
16. F. Z. Peng, M. Shen, Z. Qian. Maximum boost 1 control of the Z- source inverter. IEEE Trans. Power Electron, 20(4): 833-838,2005.
17. Shen M., Wang J., Joseph A., Peng F.Z., Tolbert L.M., Adams D.J., “Constant boost control of the Z-source inverter to minimize current ripple and voltage stress”, IEEE Trans. Ind. Appl, 42: 770-778, 2006.
18. Ioinovici A., “Switched-capacitor power electronics circuits”. IEEE Circuits Syst. Mag, 1: 37-42, 2001.
19. Chung H.S., Ioinovici A., Cheung W.L., “Generalized structure of bi-directional switched-capacitor dc/dc converters”, IEEE Trans. Circuits Syst. I, Fundam. Theory Appl, 50: 743-753, 2003.
20. Axelord B., Berkovich Y., Ioinovici A., “Switched- capacitor/switched-inductor structures for getting transformerless hybrid dc-dc PWM converters”, IEEE Trans. Circuits Syst. I, Fundam. Theory Appl, 55: 687-696, 2008.
21. Yang L.S., Liang T.J., Chen J.F., “Transformerless dc-dc converters with high step-up voltage gain”, IEEE Trans. Ind. Electron, 56: 3144-3152, 2009.
22. Pengfei Hu, Daozhuo Jiang, “A Level-Increased Nearest Level Modulation Method for Modular Multilevel Converters”, IEEE Transactions on Power Electronics, 30: 312-319, 2015.
23. Antonopoulos A., Angquist L., Nee H., “On dynamics and voltage control of the modular multilevel converter”, .Proc. Eur. Conf. Power Electron, 1-10, 2009.
24. Rohner S., Bernet S., Hiller M., Sommer R. “Modulation, losses, and semiconductor requirements of modular multilevel converters”, IEEE Trans. Ind. Electron., 57: 2633-2642, 2010.
25. Li Z., Wang P., Zhu H., Chu Z., Li Y., “An improved pulse width modulation method for chopper-cell-based modular multilevel converters”, IEEE Trans. Power Electron, 27: 3472-3481, 2012.
26. Yi Deng, Ronald G. Harley, “Space-Vector versus Nearest-Level Pulse Width Modulation for Multilevel Converters”, IEEE Trans. Power Electron, 30: 2962-2973, 2015.