Control for Grid Connected Inverter under Unbalanced Grid Voltage Based on PI-QR Controller

Abstract:

Control strategy under unbalanced and distorted grid voltage is one of the most significant tasks for grid-connected inverter (GCI). In order to guarantee that the grid current meets the related IEEE Std.929-2000, a new control scheme was presented. Firstly, the typical model of GCI was presented. Secondly, the GCI control model based on PI-QR controller in synchronous reference frame (SRF) was built. Finally, the system’s simulation was conducted under distorted and unbalanced grid voltage. The results demonstrate the effectiveness of the presented control strategy.

• Periodical: Applied Mechanics and Materials (Volumes 716-717)
• Pages: 1648-1653
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.716-717.1648
• Online since: December 2014
• Authors: Jia Jin Pan*, Yan Cheng Liu, Chuan Wang, Qin Jin Zhang
• Keywords: Grid Current Control, Grid Voltage Unbalance, Grid-Connected Inverter (GCI), PI-QR

References

[1] W. Li, X. Ruan, and D. Pan. Full-Feedforward Schemes of Grid Voltages for a Three-Phase LCL-Type Grid-Connected Inverter [J]. IEEE Tran. Ind. Electron. , vol. 60, no. 6, pp.2237-2250, Jun. (2013).

DOI: 10.1109/tie.2012.2193864

[2] P. Rodríguez, A. Luna, and I. Candela. Multiresonant Frequency-Locked Loop for Grid Synchronization of Power Converters Under Distorted Grid Conditions [J]. IEEE Tran. Ind. Electron. , vol. 58, no. 1, pp.127-138, Jan. (2011).

DOI: 10.1109/tie.2010.2042420

[3] S. Alepuz, S. B. Monge, J. Bordonau, and J. A. Martínez-Velasco. Control Strategies Based on Symmetrical Components for Grid-Connected Converters Under Voltage Dips [J]. IEEE Tran. Ind. Electron. , vol. 56, no. 6, pp.2162-2173, Jun. (2009).

DOI: 10.1109/tie.2009.2017102

[4] M. Castilla, J. Miret, A. Camacho. Modeling and Design of Voltage Support Control Schemes for Three-Phase Inverters Operating Under Unbalanced Grid Conditions [J]. IEEE Tran. Power. Electron. , vol. 29, no. 11, pp.6139-6150. Nov. (2014).

DOI: 10.1109/tpel.2013.2296774

[5] P. Rioual, H. Pouliquen, and J.P. Louis. Regulation of a PWM Rectifier in the Unbalanced Network State Using a Generalized Model [J]. IEEE Tran. Power. Electron. , vol. 11, no. 3, pp.495-502, May. (1996).

DOI: 10.1109/63.491644

[6] H. Song, and K. Nam. Dual Current Control Scheme for PWM Converter Under Unbalanced Input Voltage Conditions [J]. IEEE Tran. Ind. Electron. , vol. 46, no. 5, pp.953-959, Oct. (1999).

DOI: 10.1109/41.793344

[7] L. Xu, B. R. Andersen, and P. Cartwright. VSC Transmission Operating Under Unbalanced AC Conditions—Analysis and Control Design [J]. IEEE Tran. Power Del., vol. 20, no. 1, pp.427-434, Jan. (2005).

DOI: 10.1109/tpwrd.2004.835032

[8] M. Liserre, R. Teodorescu, and F. Blaabjerg. Multiple Harmonics Control for Three-Phase Grid Converter Systems With the Use of PI-RES Current Controller in a Rotating Frame [J]. IEEE Tran. Power. Electron. , vol. 21, no. 3, pp.836-841, May. (2006).

DOI: 10.1109/tpel.2006.875566

[9] I. Etxeberria-Otadui, U. Viscarret, and M. Caballero. New Optimized PWM VSC Control Structures and Strategies Under Unbalanced Voltage Transients [J]. IEEE Tran. Ind. Electron. , vol. 54, no. 5, pp.2902-2914, Oct. (2007).

DOI: 10.1109/tie.2007.901373