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http://dx.doi.org/10.6113/JPE.2015.15.1.268

One-Cycle Control Strategy for Dual-Converter Three-Phase PWM Rectifier under Unbalanced Grid Voltage Conditions  

Xu, You (School of Automation, Nanjing Institute of Technology)
Zhang, Qingjie (College of Engineering, Nanjing Agriculture University)
Deng, Kai (School of Electrical Engineering, Southeast University)
Publication Information
Journal of Power Electronics / v.15, no.1, 2015 , pp. 268-277 More about this Journal
Abstract
In this paper, a dual-converter three-phase pulse width modulation (PWM) rectifier based on unbalanced one-cycle control (OCC) strategy is proposed. The proposed rectifier is used to eliminate the second harmonic waves of DC voltage and distortion of line currents under unbalanced input grid voltage conditions. The dual-converter PWM rectifier employs two converters, which are called positive-sequence converter and negative-sequence converter. The unbalanced OCC system compensates feedback currents of positive-sequence converter via grid negative-sequence voltages, as well as compensates feedback currents of negative-sequence converter via grid positive-sequence voltages. The AC currents of positive- and negative-sequence converter are controlled to be symmetrical. Thus, the workload of every switching device of converter is balanced. Only one conventional PI controller is adopted to achieve invariant power control. Then, the parameter tuning is simplified, and the extraction for positive- and negative-sequence currents is not needed anymore. The effectiveness and the viability of the control strategy are demonstrated through detailed experimental verification.
Keywords
Invariant power control; Negative-sequence converter; One-cycle control; Positive-sequence converter; Voltage sag;
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1 L. Moran, P. D. Ziogas, and G. Joos, "Design aspects of synchronous PWM rectifier-inverter systems under unbalanced input voltage conditions," IEEE Trans. Ind. Appl., Vol. 28, No. 6, pp. 1286-1293, Nov./Dec. 1992.   DOI   ScienceOn
2 D. Roiu, R. I. Bojoi, R. I. Limongi, and A. Tenconi, "New stationary frame control scheme for three-Phase PWM rectifiers under unbalanced voltage dips conditions," IEEE Trans. Ind. Appl., Vol. 46 No. 1, pp. 268-277, Jan./Feb. 2010.   DOI   ScienceOn
3 Z. Li, P. Wang, Y. H. Li, H. Zhu, and F. Gao, "Control of three-phase PWM rectifier under unbalanced input voltage conditions without sequential component extraction," in Proc., PEMC, pp. T2-179-T2184, 2010.
4 J. B. Hu, Y. K. He, L. Xu, and B. W. Williams, "Improved control of DFIG systems during grid unbalance using PI-R current regulators," IEEE Trans. Ind. Electron., Vol. 56, No. 2, pp. 439-451, Feb. 2009.   DOI   ScienceOn
5 J. G. Hwang, P. W. Lehn, and M. Winkelnkemper, "Control of grid connected AC-DC converters with minimized DC link capacitance under unbalanced grid voltage condition," in Proc., IEEE EPE, pp. 1-10, 2007.
6 I. Etxeberria-Otadui, U. Viscarret, M. Caballero, A. Rufer, and S. Bacha, "New optimized PWM VSC control structures and strategies under unbalanced voltage transients," IEEE Trans. Ind. Electron., Vol. 54, No. 5, pp. 2902-2914, Oct. 2007.   DOI   ScienceOn
7 X. H. Wu, K. P. Sahib, and J. X. Xu, "Supply-side current harmonics control of three phase PWM boost rectifiers under distorted and unbalanced supply voltage conditions," in Proc. IEEE PEDS, pp. 647-652, 2007.
8 Y. Suh and T. A. Lipo, "Control scheme in hybrid synchronous stationary frame for PWM AC/DC converter under generalized unbalanced operating conditions," IEEE Trans. Ind. Appl., Vol. 42, No. 3, pp. 825-835, May/Jun. 2006.   DOI   ScienceOn
9 Y. Suh and T. A. Lipo, "Modeling and analysis of instantaneous active and reactive power for PWM AC/DC converter under generalized unbalanced grid," IEEE Trans. Power Del., Vol. 21, No. 3, pp. 1530-1540, Jul. 2006.   DOI   ScienceOn
10 H.-S. Song, I.-W. Joo, and K. Nam, "Source voltage sensorless estimation scheme for PWM rectifiers under unbalanced conditions," IEEE Trans. Ind. Electron., Vol. 50, No. 6, pp. 1238-1245, Dec. 2003.   DOI   ScienceOn
11 C. Qiao and K. M. Smedley, "A general three-phase PFC controller for rectifiers with a parallel-connected dual Boost topology," IEEE Trans. Power Electron., Vol. 17, No. 6, pp. 925-934, Nov. 2002.   DOI   ScienceOn
12 H.-S. Song and K. Nam, "Dual current control scheme for PWM converter under unbalanced input voltage conditions," IEEE Trans. Ind. Electron., Vol. 46, No. 5, pp. 953-959, Oct. 1999.   DOI   ScienceOn
13 C. Qiao and K. M. Smedley, "Unified constant-frequency integration control of three-phase standard bridge boost rectifiers with power-factor correction," IEEE Trans. Ind. Electron., Vol. 50, No. 1, pp. 100-107, Feb. 2003.   DOI   ScienceOn
14 A. V. Stankovic and T. A.Lipo, "A novel control method for input output harmonic elimination of the PWM Boost type rectifier under unbalanced operating conditions," IEEE Trans. Power Electron., Vol. 16, No. 5, pp. 603-611, Sep. 2001.   DOI   ScienceOn
15 C. Qiao and K. M. Smedley, "Three-phase grid-connected inverters interface for alternative energy sources with unified constant-frequency integration control," in Proc. IEEE IAS, pp. 2675-2682, Sep./Oct. 2001.
16 Y. Chen and K. M. Smedley, "Parallel operation of one-cycle controlled three-phase PFC rectifiers," IEEE Tans. Ind. Electron., Vol. 54, No. 6, pp. 3217-3224, Dec. 2007.   DOI   ScienceOn
17 H. Markiewicz and A. Klajn, "European Standard-Voltage characteristics in Public Distribution System, EN50160," in Proc. European Committee for standardization (EN), pp. 1-12, Apr. 2008.