Control of a Novel UPFC Based on Nine Switch AC/AC Converter

Abstract

Unified Power Flow Controller (UPFC) is one of the typical FACTS devices capable of instantaneous control of three system parameters. In this paper a novel configuration of UPFC which consists of a nine-switch ac/ac converter parallel with a series capacitor has been proposed to inject desired series voltage. It means that operation of nine-switch ac/ac converter in this configuration is the same as combination of two dc/ac converter in conventional UPFC. However, proposed configuration needs fewer power electronics switches and gate drive circuits and control scheme becomes simpler than conventional UPFC configuration. The main reasons for using series capacitor parallel with nine–switch ac/ac converter  are reduction of injection voltage’s THD, elimination of output passive filter, and reduction of converters power rating in comparison with conventional UPFC consisted of series and shunt converters. The proposed UPFC is simulated using MATLAB/SIMULINK software and simulation results are presented to indicate well-performance of the novel configuration of UPFC.

Keywords

• -

AC/AC Converter

Abstract

References

1. J. M. Ramirez, J. L. Murillo-Pérez, “Steady-State Voltage Stability with StatCom”, IEEE TRANS. ON Power Systems, Vol. 21, NO. 3, AUGUST 2006.
2. B. Han, H. J. Kim, S. T. Baek, “Performance analysis of SSSC based on three-level multi-bridge PWM inverter”, Electric Power Systems Research, Vol.61, pp. 195-202, 2002
3. R. Tapia, J. M. Ramirez, “Power Systems Neural Voltage Control by a Statcom”, International Joint Conference Vancouver Wall Centre Hotel, Vancouver, BC, Canada July 16-21, 2006. Networks Sheraton
4. A. T. Al-Awami, Y.L. Abdel-Magid, M.A. Abido, “A particle-swarm-based approach of power system stability enhancement with unified power flow controller”, Electrical Power and Energy Systems, Vol.29, pp. 251-259, 2007.
5. S. T. Kalyani, G. T. Das, “simulation of real and reactive power flow control with UPFC connected to a transmission line”, Journal of Theoretical and Applied Information Technology, pp. 16-22, 2008.
6. A. Shukla, A. Ghosh, A. Joshi, “Static shunt and series compensation of an SMIB System using flying capacitor multilevel inverter”, IEEE Trans. Power Deliv. 20 (2005) 2613–2622.
7. D. Soto, T.C. Green, “A comparison of high-power converter topologies for the implementation of FACTS Electron. 49 (2002) 1072–1080. Trans. Indus.
8. A. K. Sadigh, M. Tarafdar Hagh, M. Sabahi, “Unified power flow controller based on two shunt converters and a series capacitor”, Electric Power Systems Research, 80 (2010) 1511–1519.

9. C. Liu, B. Wu, N. Zargari, D. Xu, “A Novel Nine- Switch PWM Rectifier-Inverter Topology for Three-Phase Conference on Power Electronics Applications, Sep. 2007. European
10. T. Kominami, Y. Fujimoto, “A Novel Nine-Switch Inverter for Independent Control of two Three- Phase Loads”, Industry Applications Conference, pp. 2346-2350, 2007.
11. S. M.D. Dehnavi, M. Mohamadian, A.Yazdani, F. Ashrafzadeh, “Space Vector Modulation for Nine- Switch Converters”, IEEE Trans. on Power Electronics, Vol. 25, No. 6, pp. 1488-1496, June 2010.
12. M. R. Banaei, A. R. Dehghanzadeh, “Doubly Fed Induction Generator Based a Novel Nine Switch AC/AC Converter”, International Review on Modelling and Simulations, vol. 4, No. 2, pp. 562- 567, April 2011.
13. B. Mwinyiwiwa, B.Lu, B.T.Ooi, “Multi terminal unified power flow controller”, IEEE Trans. Power Electron. 15 (2000) 1088–1109.
14. B.M. Hana, S.T. Baeka, H.J. Kima, J.B. Choob, G.S. Jang, “Novel unified power flow controller based on H-bridge modules”, Electron. Power Syst. Res. 70 (2004) 64–75.