Control of Grid-Connected Inverter in Stationary Reference Frame with Harmonic Compensation Capability
Subject Areas : electrical and computer engineeringM. Shahparasti 1 , M. Mohamadian 2 , A. Yazdian Varjani 3
1 -
2 - Tarbiat Modares University
3 - Tarbiat Modares University
Abstract :
Due to increasing number of inverter based distributed generation resources in electric power systems, improving the quality and performance of them are necessary. In this paper a new current scheme is presented to inject sinusoidal current to the grid with following grid voltage conditions: sinusoidal voltage, distorted voltage and unbalance voltage. The proposed control scheme includes two sections: 1) Determination of sinusoidal reference current considering grid voltage condition; 2) current controller to track reference current. The proposed reference current determination algorithm in comparison with other algorithms, such as Park method is implemented easier and has faster dynamic response. The proposed current controller is implemented in the stationary reference frame and does not require the use of multiple controllers and coordinate transforms to compensate the harmonics. This control strategy needs tuning of only one variable, hence compared with other control methods requires less computational burden for practical implementation. Simulation results confirm the effectiveness of the proposed control method.
[1] L. Shang, D. Sun, and D. Hu, "Sliding - mode - based direct power control of under unbalanced network conditions," IET Power Electron., vol. 4, no.5, pp. 570-579, May 2011.
[2] N. Flourentzou, V. G. Agelidis, and G. D. Demetriades, "VSC - based HVDC power transmission systems: an overview," IEEE Trans. on Power Electron., vol. 24, no. 3, pp. 592-602, Mar. 2009.
[3] IEEE Std 1547-2003, IEEE Standard for Interconnecting Distributed Resources with Electric Power Systems, 2003.
[4] M. Marei, E. El - Saadany, and M. Salama, "A novel control algorithm for the DG interface to mitigate power quality problems," IEEE Trans. Power Del., vol. 19, no. 3, pp. 1384-1392, Jul. 2004.
[5] E. Twinning, "Modeling grid-connected voltage source inverter operation," in Proc. Australasian Universities Power Engineering Conf., AUPEC'01, pp. 501-506, 23-26 Sep. 2001.
[6] E. Twinning and D. G. Holmes, "Grid current regulation of a three - phase voltage source inverter with an LCL input filter," IEEE Trans. on Power Electron., vol. 18, no. 3, pp. 888-895, May 2003.
[7] C. Lascu, L. Asiminoaei, I. Boldea, and F. Blaabjerg, "High performance current controller for selective harmonic compensation in active power filters," IEEE Trans. on Power Electron., vol. 22, no. 5, pp. 1826-1835, Sep. 2007.
[8] F. Blaabjerg, M. Liserre, and A. V. Timbus, "Overview of control and grid synchronization for distributed power generation systems," IEEE Trans. on Ind. Electron., vol. 53, no. 5, pp. 1398-1409, Oct. 2006.
[9] S. Buso and P. Mattavelli, Digital Control in Power Electronics, J. Hudgins, Ed. Morgan and Claypool Publishers, 2006.
[10] G. Weiss, Q. Zhong, T. Green, and J. Liang, "H repetitive control of DC-AC converters in microgrids," IEEE Trans. Power Electron., vol. 19, no. 1, pp. 219-230, Jan. 2004.
[11] D. Sha, D. Wu, and X. Liao, "Analysis of a hybrid controlled three - phase grid - connected inverter with harmonics compensation in synchronous reference frame," IET Power Electron, vol. 4, no. 7, pp. 743-751, Aug. 2011.
[12] J. Allmeling, "A control structure for fast harmonics compensation in active filters," IEEE Trans. on Power Electron., vol. 19, no. 2, pp. 508-514, Mar. 2004.
[13] A. Timbus, M. Liserre, R. Teodorescu, P. Rodriguez, and F. Blaabjerg, "Evaluation of current controllers for distributed power generation systems," IEEE Trans. on Power Electron., vol. 24, no. 3, pp. 654-664, Mar. 2009.
[14] H. R. Mohammadi, A. Y. Varjani, and H. Mokhtari, "Multiconverter unified power - quality conditioning system: MC- PQC," IEEE Trans. on Power Del., vol. 24, no. 3, pp. 1679-1686, Jul. 2009.
[15] R. Kadri, J. Gaubert, and G. Champenois, "An improved maximum power point tracking for photovoltaic grid - connected inverter based on voltage - oriented control," IEEE Trans. on on Ind. Electron., vol. 58, no. 1, pp. 66-75, Jan. 2011.
[16] N. Pogaku, M. Prodanovic, and T. C. Green, "Modeling, analysis, and testing of autonomous operation of an inverter - based microgrid," IEEE Trans. on Power Electron., vol. 22, no. 2, pp. 613-625, Mar. 2007.
[17] N. Ninad and L. Lopes, "Per - phase vector (dq) controlled three - phase grid - forming inverter for stand - alone systems," in Proc. 2011 IEEE Int. Symp. on Industrial Electronis, ISIE'11, pp. 1626-1631, 27-30 Jun. 2011.
[18] Y. W. Li, D. M. Vilathgamuwa, and P. C. Loh, "A grid - interfacing power quality compensator for three - phase three - wire microgrid applications," IEEE Trans. on Power Electron., vol. 21, no. 4, pp. 1021-1031, Jul. 2006.
[19] C. Lascu, L. Asiminoaei, I. Boldea, and F. Blaabjerg, "Frequency response analysis of current controllers for selective harmonic compensation in active power filters," IEEE Trans. on Ind. Electron., vol. 56, no. 2, pp. 337-347, Feb. 2009.
[20] M. Kale and E. Ozdemir, "Harmonic and reactive power compensation with shunt active power filter under non - ideal mains voltage," Electric Power on Systems Research, vol. 74, no. 3, pp. 363-370, Jun. 2005.
[21] F. Briz, M. Degner, and R. Lorenz, "Analysis and design of current regulators using complex vectors," IEEE Trans. on Ind. Appl., vol. 36, no. 3, pp. 817-825, May 2000.
[22] X. Guo and W. Wu, "Improved current regulation of three - phase grid - connected voltage - source inverters for distributed generation systems," IET Renewable Power Generation, vol. 4, no. 2, pp. 101-115, Mar. 2010.
[23] M. Liserre, A. Dell'Aquila, and F. Blaabjerg, "Design and control of a three - phase active rectifier under non - ideal operating conditions," in Proc. 37th IAS Annual Meeting Industry Applications Conf., vol. 2, pp. 1181-1188, Oct. 2002.
[24] M. Liserre, F. Blaabjerg, and R. Teodorescu, "Grid impedance estimation via excitation of LCL - filter resonance," IEEE Trans. on Ind. Appl., vol. 43, no. 5, pp. 1401-1407, Sep./Oct. 2007.
