Browse > Article
http://dx.doi.org/10.6113/JPE.2016.16.5.1939

First-order Generalized Integrator Based Frequency Locked Loop and Synchronization for Three-Phase Grid-connected Converters under Adverse Grid Conditions  

Luo, Zhaoxu (School of Information Science and Engineering, Central South University)
Su, Mei (School of Information Science and Engineering, Central South University)
Sun, Yao (School of Information Science and Engineering, Central South University)
Liu, Zhangjie (School of Information Science and Engineering, Central South University)
Dong, Mi (School of Information Science and Engineering, Central South University)
Publication Information
Journal of Power Electronics / v.16, no.5, 2016 , pp. 1939-1949 More about this Journal
Abstract
This paper presents an alternative frequency adaptive grid synchronization technique named HDN-FLL, which can accurately extract the fundamental positive- and negative-sequence components and interested harmonics in adverse three-phase grid voltage. The HDN-FLL is based on the harmonic decoupling network (HDN) consisting of multiple first order complex vector filters (FOCVF) with a frequency-locked loop (FLL), which makes the system frequency adaptive. The stability of the proposed FLL is strictly verified to be global asymptotically stable. In addition, the linearization and parameters tuning of the FLL is also discussed. The structure of the HDN has been widely used as a prefilter in grid synchronization techniques. However, the stability of the general HDN is seldom discussed. In this paper, the transfer function expression of the general HDN is deduced and its stability is verified by the root locus method. To show the advantages of the HDN-FLL, a simulation comparison with other gird synchronization methods is carried out. Experimental results verify the excellent performance of the proposed synchronization method.
Keywords
First-order generalized integrator; Frequency-locked loop; Grid-connected converter; Grid synchronization; Harmonic detection;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. M. Carrasco, L. G. Franquelo, J. T. Bialasiewicz, and E. Galvan, "Power electronic systems for the grid integration of renewable energy sources: a survey," IEEE Trans. Ind. Electron., Vol. 53, No. 4, pp. 1002-1016, Jun. 2006.   DOI
2 F. M. Hughes, O. Anaya-Lara, N. Jenkins, and G. Strbac, "Control of DFIG-based wind generation for power network support," IEEE Trans. Power Syst., Vol. 20, No. 4, pp. 1958-1966, Nov. 2005.   DOI
3 W. Sinsukthavorn, E. Ortjohann, A. Mohd, N. Hamsic, and D. Morton, "Control strategy for three-/four-wire inverter-based distributed generation," IEEE Trans. Ind. Electron., Vol. 59, No. 10, pp. 3890-3899, Oct. 2012.   DOI
4 A. Kahrobaeian and Y. A. R. I. Mohamed, "Networked-based hybrid distributed power sharing and control for islanded microgrid systems," IEEE Trans. Power Electron., Vol. 30, No. 2, pp.603-617, Feb. 2015.   DOI
5 F. Blaabjerg, R. Teodorescu, M. Liserre, and A. V. Timbus, "Overview of control and grid synchronization for distributed power generation systems," IEEE Trans. Ind. Electron., Vol. 53, No. 5, pp. 1398-1409, Oct. 2006.   DOI
6 M. Altýn, O. Gooksu, R. Teodorescu, and P. Rodriguez, "Overview of recent grid codes for wind power integration," in 12th International Conference on OPTIM, pp. 1152-1160, 2010.
7 M. Tsili and S. Papathanassiou, "A review of grid code technical requirements for wind farms," IET Renewable Power Generation, Vol. 3, No. 3, pp. 308-332, Sep. 2009.   DOI
8 J. He, Y. W. Li, and S. Munir, "A flexible harmonic control approach through voltage controlled DG-grid interfacing converters," IEEE Trans. Ind. Electron., Vol. 59, No. 1, pp. 444-455, Jan. 2012.   DOI
9 P. Rodriguez, J. Pou, J. Bergas, and J. I. Candela, "Decoupled double synchronous reference frame PLL for power converters control," IEEE Trans. Power Electron., Vol. 22, No. 2, pp. 584-592, Mar. 2007.   DOI
10 P. Rodriguez, R. Teodorescu, and I. Candela, "New positive-sequence voltage detector for grid synchronization of power converters under faulty grid conditions," in 37th IEEE Power Electronics Specialists Conference, pp. 1-7, Jun. 2006.
11 W. W. Li, X. B. Ruan, C. L. Bao, D. H. Pan, and X. H. Wang, "Grid synchronization systems of three-phase gridconnected power converters: a complex vector filter perspective," IEEE Trans. Ind. Electron., Vol. 61, No. 4, pp. 1855-1870, Apr. 2014.   DOI
12 P. Rodriguez, A. Luna, I. Candela, R. Mujal, R. Teodorescu, and F. Blaabjerg, "Multiresonant frequency-locked loop for grid synchronization of power converters under distorted grid conditions," IEEE Trans. Ind. Electron., Vol. 58, No. 1, pp. 127-138, Jan. 2011.   DOI
13 X. Guo, W. Wu, and Z. Chen, "Multiple-complex coefficient-filter-based phase-locked loop and synchronization technique for three-phase grid interfaced converters in distributed utility networks," IEEE Trans. Ind. Electron., Vol. 58, No. 4, pp. 1194-1204, Apr. 2011.   DOI
14 X. Q. Guo and W. Y. Wu, "Simple synchronisation technique for three-phase grid-connected distributed generation systems," IET Renewable Power Generation, Vol. 7, No.1, pp. 55-62, Feb. 2013.   DOI
15 X. Du, Y. D. Liu, G. N. Wang, and P. J. Sun, "Three-phase grid voltage synchronization using sinusoidal amplitude integrator in synchronous reference frame," International Journal of Electrical Power & Energy Systems, Vol. 64, pp. 861-872, Jan. 2015.   DOI
16 Y. F. Wang and Y. W. Li, "Grid synchronization PLL based on cascaded delayed signal cancellation," IEEE Trans. Power Electron., Vol. 26, No. 7, pp. 1987-1997, Jul. 2011.   DOI
17 K. J. Lee, D. S. Shin, H. J. Kim, J. P. Lee, T. J. Kim, and D. W. Yoo, "Phase-locked loop algorithm using FFT concept for grid synchronization under unbalanced voltage sags," in 28th Annual IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 2231-2234, Mar. 2013.
18 D. Yazdani, A. Bakhshai, G. Joos, and M. Mojiri, "A nonlinear adaptive synchronization technique for grid-connected distributed energy sources," IEEE Trans. Power Electron., Vol. 23, No. 4, pp. 2181-2186, Jul. 2008.   DOI
19 K. J. Lee, J. P. Lee, D. S. Shin, D. W. Yoo, and H. J. Kim, "A novel grid synchronization PLL method based on adaptive low-pass notch filter for grid-connected PCS," IEEE Trans. Ind. Electron., Vol. 61, No. 1, pp. 292-301, Jan. 2014.   DOI
20 M. Karimi-Ghartemani and M. R. Iravani, "A method for synchronization of power electronic converters in polluted and variable-frequency environments," IEEE Trans. Power Syst., Vol. 19, No. 3, pp. 1263-1270, Aug. 2004.   DOI
21 X. Yuan, W. Merk, H. Stemmler, and J. Allmeling, "Stationary frame generalized integrators for current control of active power filters with zero steady-state error for current harmonics of concern under unbalanced and distorted operating conditions," IEEE Trans. Ind. Appl., Vol. 38, No. 2, pp. 523-532, Mar./Apr. 2002.   DOI
22 M. Ciobotaru, R. Teodorescu, and F. Blaabjerg, "A new single-phase PLL structure based on second order generalized integrator," in Proceedings of IEEE PESC, pp. 1-7, 2006.
23 P. Rodriguez, A. Luna, I. Candela, R. Teodorescu, and F. Blaabjerg, "Grid synchronization of power converters using multiple second order generalized integrators," in 34th Annual Conference of IEEE Industrial Electronics, pp. 755-760, Nov. 2008.
24 P. Rodriguez, A. Luna, M. Ciobotaru, R. Teodorescu, and F. Blaabjerg, "Advanced grid synchronization system for power converters under unbalanced and distorted operating conditions," in 32nd Annual Conference on IEEE Industrial Electronics, pp. 5173-5178, Nov. 2006.