Modelling and Simulation of Control Circuit for Oscillator Based Inverter for Microgrids
DOI:
https://doi.org/10.51983/ajes-2014.3.2.1926Keywords:
Virtual oscillator, Microgrid, Asymptotic synchronization, Coordinate transformations, Dead zone oscillator, MatLabAbstract
This paper presents a control strategy for oscillator based inverter for microgrids to enable asymptotic synchronization in order to produce a stable power system. The microgrid is formed by paralleling of three 3-phase inverters; the output of the inverter is programmed to outdo the changing aspects of a non-linear oscillator. The virtual oscillator within the controllers is implicitly coupled through physical electrical network say RLC networks and coordinate transformations. Due to the self-sustaining capability of the oscillators, the inverter ac outputs are synchronized and communication between the inverters is not needed as the controller uses local signals as feedback elements. In this paper, the methodology of the controller is framed in such a way that the inverter output voltage is retained within prescribed limits although there are fluctuations in load. The simulation results prove that the controller retains the voltage fluctuations within ± 5 %.
References
Brian B. Johnson, Sairaj V. Dhople, James L. Cale, Abdullah
O. Hamadeh and Philip T. Krein, “Oscillator-based inverter control for islanded three-phase microgrids”, IEEE journal of photovoltaics, Vol. 4, No. 1, pp. 387-395, January 2014.
R. H. Lasseter, “Microgrids”, in Proceedings of the IEEE Power Engineering Society Winter Meeting, Vol. 1, pp. 305–308, 2002
Ritwik Majumder, “Some aspects of stability in microgrids”, IEEE transactions on power systems, Vol. 28, No. 3, pp. 3243- 3252, August 2013
Salehi Dobakhshari, S. Azizi, and A. M. Ranjbar, “Control of microgrids: Aspects and prospects”, 2011 International Conference on Networking, Sensing and Control Delft, the Netherlands, pp. 11-13 April 2011
M. Chandorkar, D. Divan, and R. Adapa, “Control of parallel connected inverters in standalone AC supply systems”, IEEE Trans. Ind. Appl., Vol. 29, No. 1, pp. 136–143, Jan. 1993.
Brian B. Johnson, Sairaj V. Dhople, Abdullah O. Hamadeh, and Philip T. Krein, “Synchronization of parallel single-phase inverters with virtual oscillator control”, IEEE transactions on power electronics, Vol. 29, No. 11, pp. 6124-6138, November 2014.
Brian B. Johnson, Sairaj V. Dhople, Abdullah O. Hamadeh, and Philip T. Krein, “Synchronization of nonlinear oscillators in an LTI electrical power network”, IEEE transactions on circuits and systems—i: regular papers, Vol. 61, No. 3, pp. 834-844, March 2014.
Sairaj V. Dhople, Brian B. Johnson, and Abdullah O. Hamadeh, “Virtual oscillator control for voltage source inverters”, Fifty-first Annual Allerton Conference Allerton House, UIUC, Illinois, USA October 2 - 3, 2013.
Josep M. Guerrero, Senior Member, IEEE, Juan C. Vasquez, José Matas, Luis García de Vicuña, and Miguel Castilla “Hierarchical control of droop-controlled AC and DC microgrids - A General Approach Toward Standardization”, IEEE transactions on industrial electronics, Vol. 58, No. 1, pp. 158-172, January 2011.
Mohd, D. Ortjohann, and O. Omari, “Review of control techniques for inverters parallel operation,” Electr. Power Syst. Res., Vol. 80, No. pp. 1477–1487, Dec. 2010.
F. Katiraei and M. Iravani, “Power management strategies for a microgrid with multiple distributed generation units,” IEEE Trans. Power Syst., Vol. 21, No. 4, pp. 1821-1831, Nov. 2006.
Maryam Babazadeh, Houshang Karimi, “Robust decentralized control for islanded operation of a microgrid”, IEEE Power and Energy Society General Meeting, June 2011.
J. M. Guerrero, M. Chandorkar, T. Lee, and P. C. Loh, “Advanced control architectures for intelligent microgrids -Part I: Decentralized and hierarchical control,” IEEE Trans. Ind. Electron., Vol. 60, No. 4, pp. 1254-1262, Apr. 2013.
Josep M. Guerrero, Luis García de Vicuña, José Matas, Miguel Castilla, and Jaume Miret, “A wireless controller to enhance dynamic performance of parallel inverters in distributed generation systems”, IEEE transactions on power electronics, Vol. 19, No. 5, pp. 1205-1213, September 2004.
D. Holmes and T. Lipo, “Pulse width modulation for power converters”, .Piscataway, NJ, USA: IEEE Press, 2003.
Mohammad N. Marwali, Jin-Woo Jung, and Ali Keyhani, “Control of distributed generation systems-Part II: Load sharing control”, IEEE transactions on power electronics, Vol. 19, No. 6, pp.1551-1561, November 2004.
Juan C. Vasquez, Josep M. Guerrero, Mehdi Savaghebi, IEEE, Joaquin Eloy-Garcia, and Remus Teodorescu, “Modeling, analysis, and design of stationary-reference-frame droop- controlled parallel three-phase voltage source inverters”, IEEE transactions on industrial electronics, Vol. 60, No. 4, pp.1271- 1280, April 2013.
Miranda, L. G. B. Rolim, and M. Aredes, “A DQ synchronous reference frame current control for single-phase converters,” Proc. IEEE Power Electron. Spec. Conf., pp. 1377–1381, 2005.
Sun Dan, “Clarke’s and Park’s Transformations”, College of Electrical Engineering, Zhejiang University, September 2009.
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