Browse > Article
http://dx.doi.org/10.6113/JPE.2012.12.4.654

Control Strategy Based on Equivalent Fundamental and Odd Harmonic Resonators for Single-Phase DVRs  

Teng, Guofei (School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University)
Xiao, Guochun (School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University)
Hu, Leilei (School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University)
Lu, Yong (School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University)
Kafle, Yuba Raj (School of Electrical Engineering, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University)
Publication Information
Journal of Power Electronics / v.12, no.4, 2012 , pp. 654-663 More about this Journal
Abstract
In this paper, a digital control strategy based on equivalent fundamental and odd harmonic resonators is proposed for single-phase DVRs. By using a delay block, which can be equivalent to a bank of resonators, it rejects the fundamental and odd harmonic disturbances effectively. The structure of the single closed-loop control system consists of a delay block, a proportional gain and a set of zero phase notch filters. The principle of the controller design is discussed in detail to ensure the stability of the system. Both the supply voltage and the load current feedforwards are used to improve the response speed and the ability to eliminate disturbances. The proposed controller is simple in terms of its structure and implementation. It has good performances in harmonic compensation and dynamic response. Experimental results from a 2kW DVR prototype confirm the validity of the design procedure and the effectiveness of the control strategy.
Keywords
DVR; Equivalent resonators; Harmonic compensation; Single loop; Zero phase notch filter;
Citations & Related Records
연도 인용수 순위
  • Reference
1 G. Escobar, A. A. Valdez, and R. E. Torres-Olguin, "A repetitive-based controller in stationary reference frame for D-Statcom in unbalanced operation," IEEE International Symposium on Ind. Electron., pp. 1388-1393, Jul. 2006.
2 G. Escobar, P. R. Martinez, and J. Leyva-Ramos, "Analog Circuits to Implement Repetitive Controllers with Feedforward for Harmonic Compensation," IEEE Trans. Ind. Electron., Vol. 54, No. 1, pp. 567-573, Feb. 2007.   DOI   ScienceOn
3 P. C. Loh, Y. Tang, F. Blaabjerg, and P. Wang, "Mixed-frame and stationary-frame repetitive control schemes for compensating typical load and grid harmonics," IET. Power Electron., Vol. 4, No. 2, pp. 218-226, Feb. 2011.   DOI   ScienceOn
4 I. S. Gradshteyn and I. M. Ryzhik, "Table of integrals, series and products," Academic Press, 6th Ed., 2000.
5 D. N. Zmood, D. G. Holmes, and G. H. Bode, "Frequency-domain analysis of three-phase linear current regulators" IEEE Trans. Ind. Applicat., Vol. 37, No. 2, pp. 601-610, Mar./Apr. 2001.   DOI   ScienceOn
6 C. Cosner, G. Anwar, and M. Tomizuka, "Plug in repetitive control for industrial robotic manipulators," Proc. IEEE Int. Conf. Robot. Automat, pp. 1970-1975, May 1990.
7 Y. W. Li, D. M. Vilathgamuwa and F. Blaabjerg, "A robust control scheme for medium- voltage-level DVR implementation," IEEE Trans. Ind. Electron.. Vol. 54, No. 4, pp. 2249-2261, Aug. 2007.   DOI   ScienceOn
8 A. G. Yepes, F. D. Freijedo, and O. Lopez, "High-performance digital resonant controllers implemented with two integrators," IEEE Trans. Power Electron., Vol. 26, No. 2, pp. 563-576, Feb. 2011.   DOI   ScienceOn
9 I. J. Gabe, V. F. Montagner, and H. Pinheiro, "Design and implementation of a robust current controller for VSI connected to the grid through an LCL filter," IEEE Trans. Power Electron., Vol. 24, No. 6, pp. 1444-1452, Jun. 2009.   DOI   ScienceOn
10 A. G. Yepes, F. D. Freijedo, and J. D. Gandoy, "Effects of discretization methods on the performance of resonant controllers," IEEE Trans. Power Electron., Vol. 25, No. 7, pp. 1692-1712, Jan. 2010.   DOI   ScienceOn
11 M. J. Newsman and D. G. Holmes, "Delta operator digital filters for high performance inverter applications," IEEE Trans. Power Electron., Vol. 18, No. 1, pp. 447-454, Jan. 2003.   DOI   ScienceOn
12 G. Escobar, A. A. Valdez, J. Leyva-Ramos and P. Mattavelli, "A repetitive-based controller for UPS using a combined capacitor/load current sensing," Power Electronics Specialists Conference, pp. 955-961, Jun. 2005.
13 P. Roncero-Sanchez, E. Acha, J. E. Ortega-Calderon, and V. Feliu, "A versatile control scheme for a dynamic voltage restorer for power quality improvement," IEEE Trans. Power Del., Vol. 24, No. 1, pp. 227-248, Jan. 2009.
14 V. F. Montagner and S. P. Ribas, "State feedback control for tracking sinusoidal references with rejection of disturbances applied to ups systems," IECON '09. 35th, pp. 1764-1769, Nov. 2009.
15 K. Zhang, Y. Kang, J. Xiong, and J. Chen, "Direct repetitive control of SPWM inverter for UPS purpose," IEEE Trans. Power Electron., Vol. 18, No. 3, pp. 784-792, May 2003.   DOI   ScienceOn
16 N. G. Hingorani. "Introducing Custom Power," IEEE Spmtrum, pp.41-48, Jun. 1995.