Sliding Mode Control of a New Wind-Based Isolated Three-Phase Induction Generator System with Constant Frequency and Adjustable Output Voltage

- Journal title : Journal of Power Electronics
- Volume 16, Issue 2, 2016, pp.675-684
- Publisher : The Korean Institute of Power Electronics
- DOI : 10.6113/JPE.2016.16.2.675

Title & Authors

Sliding Mode Control of a New Wind-Based Isolated Three-Phase Induction Generator System with Constant Frequency and Adjustable Output Voltage

Moradian, Mohammadreza; Soltani, Jafar;

Moradian, Mohammadreza; Soltani, Jafar;

Abstract

This paper presents a new stand-alone wind-based induction generator system with constant frequency and adjustable output voltage. The proposed generator consists of a six-phase cage-rotor induction machine with two separate three-phase balanced stator windings and a three-phase space vector pulse width modulation inverter that operates as a static synchronous compensator (STATCOM). The first stator winding is fed by the STATCOM and used to excite the machine while the second stator winding is connected to the generator external load. The main frequency of the STATCOM is determined to be constant and equal to the load-requested frequency. The generator output frequency is independent of the load power demand and its prime mover speed because the frequency of the induced emf in the second stator winding is the same as this constant frequency. A sliding mode control (SMC) is developed to regulate the generator output voltage. A second SMC is used to force the zero active power exchanged between the machine and the STATCOM. Some simulation and experimental results are presented to prove the validity and effectiveness of the proposed generator system.

Keywords

Cage-rotor induction generator;Sliding mode control;Space vector pulse width modulation;Static VAR compensator;Wind power generation;

Language

English

References

1.

K. Singh, “Modeling and experimental analysis of a self-excited six-phase induction generator for stand-alone renewable energy generation,” Renewable Energy, Vol. 33, No. 7, pp. 1605-1621, Jul. 2008.

2.

D. Wang, W. Ma, F. Xiao, B. Zhang, D. Liu, and A. Hu, “A novel stand- alone dual stator winding induction generator with static excitation regulation,” IEEE Trans. Energy Convers., Vol. 20, No. 4, pp. 826-835, Dec. 2006.

3.

B. Singh, S. S. Murthy, and S. Gupta, “A solid state controller for self-excited induction generator for voltage regulation, harmonic compensation and load balancing,” Journal of Power Electronics, Vol. 5, No. 2, pp. 109-119, Apr. 2005.

4.

T. F. Chan and L. L. Lai, “A novel excitation scheme for a stand-alone three-phase induction generator supplying single-phase loads,” IEEE Trans. Energy Convers., Vol. 19, No. 1, pp. 136-143, Mar. 2004.

5.

S. S. Murthy, B. Singh, S. Gupta, and B. M. Gulati, “General steady-state analysis of three-phase self-excited induction generator feeding three-phase unbalanced load/single-phase load for stand-alone applications,” IEE Proc. Gener. Transm. Distrib., Vol. 150, No. 1, pp. 49-55, Jan. 2003.

6.

S. K. Jain, J. D. Sharma, and S. P. Singh, “Transient performance of three-phase self-excited induction generator during balanced and unbalanced faults,” IEE Proc. Gener .Transm. Distrib., Vol. 149, No. 1, pp. 50-57, Jan. 2002.

7.

T. Ahmed, O. Noro, E. Hiraki, and M. Nakaoka, “Terminal voltage regulation characteristics by static var compensator for a three-phase self-excited induction generator,” IEEE Trans. Ind. Appl., Vol. 40, No. 4, pp. 978-988, Jul./Aug. 2004.

8.

S. Hazra and P. Sensarma, “Vector approach for self-excitation and control of induction machine in stand-alone wind power generation,” IET Renewable Power Generation, Vol. 5, No. 5, pp. 397-405, 2011.

9.

B. R. Karthikeya and R. J. Schütt, “Overview of Wind Park Control Strategies,” IEEE Trans. Sustain. Energy, Vol. 5, No. 2, pp. 416-422, Apr. 2014.

10.

V. Phan, H. Leey, and T. Chun, “An improved control strategy using a PI-resonant controller for an unbalanced stand-alone doubly-fed induction generator,” Journal of Power Electronics, Vol. 10, No. 2, pp. 194-202, Mar. 2010.

11.

P. B. Reddy, K. K. Huh, and A. M. El-Refaie, “Generalized approach of stator shifting in interior permanent-magnet machines equipped with fractional-slot concentrated windings,” IEEE Trans. Ind. Electron., Vol. 61, No. 9, pp. 5035-5046, Sep. 2014.

12.

H. S. Che, E. Levi, M. Jones, M. J. Duran, W. Hew, and N. A. Rahim, “Operation of a six-phase induction machine using series-connected machine-side converters,” IEEE Trans. Ind. Electron., Vol. 61, No. 1, pp. 164-176, Jan. 2014.

13.

G. K. Singh, K. B. Yadav, and R. P. Saini, "Capacitive self-excitation in a six-phase induction generator for small hydro power - An experimental investigation," in Proc. PEDES, pp. 1-6, 2006.

14.

Y. Li, Y. Hu, W. Huang, L. Liu, and Y. Zhang, “The capacity optimization for the static excitation controller of the dual-stator-winding induction generator operating in a wide speed range,” IEEE Trans. Ind. Electron., Vol. 56, No. 2, pp. 530-541, Feb. 2009.

15.

S. Shao, T. Long, E. abdi, and R. A. McMahon, “Dynamic control of the brushless doubly fed induction generator under unbalanced operation,” IEEE Trans. Ind. Electron., Vol. 60, No. 6, pp. 2465-2476, Jun. 2013.

16.

F. Bu, Y. Hu, W. Huang, S. Zhuang, and K. Shi, “Control strategy and dynamic performance of dual stator-winding induction generator variable frequency AC generating system with inductive and capacitive loads,” IEEE Trans. Power Electron., Vol. 29, No. 4, pp. 1681-1692, Apr.2014.

17.

F. Bu, W. Huang, Y. Hu, J. Shi, and K. Shi, “A stand-alone dual stator winding induction generator variable frequency AC power system,” IEEE Trans. Power Electron., Vol. 27, No. 1, pp. 10-13, Jan. 2012.

18.

F. Bu, Y. Hu, W. Huang, and S. Zhuang, “Parameter design and static performance of dual stator-winding induction generator variable frequency AC generating system with inductive and capacitive loads,” IEEE Trans. Ind. Electron., Vol. 61, No. 8, pp. 3902-3914, Aug. 2014.

19.

O. Ojo, O. Omozusi, A. Ginart, and B. Gonoh, “The operation of a stand-alone single-phase induction generator using a single-phase pulse-width modulated inverter with a battery supply,” IEEE Trans. Energy Convers., Vol. 14, No. 3, pp. 526-531, Sep. 1999.

20.

J. Soltani and N. R. Abjadi, "A novel stand-alone single phase induction generator using a 3-phase machine and a single phase PWM inverter," in Proc. EPE PEMC., 2002.

21.

J. Soltani, Y. Hassani, and N. R. Abjadi, "A novel isolated three-phase induction generator with constant frequency and adjustable output voltage using a three-phase STATCOM," in Proc. ICCESSE, 2012.

22.

P. Vas, Electrical Machines and Drives: A Space-Vector Theory Approach, pp. 87-134, Clarendon Press, 1992.

23.

Z. Zhang, Q. Zhou, and A. Kusiak, “Optimization of wind power and its variability with a computational intelligence approach,” IEEE Trans. Sustain. Energy, Vol. 5, No. 1, pp. 228-236, Jan. 2014.

24.

M. J. Hossain, H. R. Pota, V. A. Ugrinovski, and R. A. Ramos, “Simultaneous STATCOM and pitch angle control for improved LVRT capability of fixed-speed wind turbines,” IEEE Trans. Sustain. Energy, Vol. 1, No. 3, pp. 142–151, Oct. 2010.

25.

J. J. E. Slotine and W. Li, Applied Nonlinear Control, pp. 277-300, Englewood Cliffs, NJ: Prentice Hall, 1991.