Power Tracking Control Strategy Based on Feedback Frequency of Large-Scale Grid-Connected PV Generation

Abstract:

PV (Photovoltaic) generation output with MPPT (Maximum power point tracking) is unadjustable. In this paper, PV generation is expected to regulate grid frequency. Thus a power tracking control strategy based on feedback frequency instead of MPPT is put forward. The feedback frequency is transferred to controlling unit of DC-DC inverter. The DC bus voltage is adjusted by controlling the duty cycle of DC-DC invertor. A grid-connected PV system with a power tracking control strategy based on feedback frequency and a DC-AC inverter control module are built in MATLAB-Simulink platform. Experiment result indicates that PV generation could regulate grid frequency by the control strategy based on feedback frequency.

• Periodical: Advanced Materials Research (Volumes 986-987)
• Pages: 1226-1230
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.986-987.1226
• Online since: July 2014
• Authors: Ling Wang*, Bei Zhao, Jian Liang Zhong, Sarmad Malik, Hai Bao
• Keywords: Droop Control, Frequency Regulation, Photovoltaic, Power Tracking Control Strategy

References

[1] Ding K, Bian X G, Liu H H. Matlab-Simulink Based Modeling to Study the Influence of Nonuniform Insolation Photovoltaic Array[C]/Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific. IEEE, 2011: 1-4.

DOI: 10.1109/appeec.2011.5747734

[2] Femia N, Petrone G, Spagnuolo G, et al. Optimizing duty-cycle perturbation of P&O MPPT technique[C]/Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual. IEEE, 2004, 3: 1939-(1944).

DOI: 10.1109/pesc.2004.1355414

[3] Han G, Xia Y, Min W. Study on the three-phase PV grid-connected inverter based on deadbeat control[C]/Power Engineering and Automation Conference (PEAM), 2012 IEEE. IEEE, 2012: 1-4.

DOI: 10.1109/peam.2012.6612490

[4] Guerrero J M, Vasquez J C, Matas J, et al. Hierarchical control of droop-controlled AC and DC microgrids—a general approach toward standardization[J]. Industrial Electronics, IEEE Transactions on, 2011, 58(1): 158-172.

DOI: 10.1109/tie.2010.2066534

[5] YAO W, CHEN M, MOU S, et al. Paralleling Control Technique of Microgrid Inverters Based on Improved Droop Method [J][J]. Automation of Electric Power Systems, 2009, 6: 021.

[6] Lei X, Da X, Yanchi Z. Three-level inverter based on direct power control connecting offshore wind farm[C]/Sustainable Power Generation and Supply, 2009. SUPERGEN'09. International Conference on. IEEE, 2009: 1-6.

DOI: 10.1109/supergen.2009.5348053

[7] Sato A, Noguchi T. Voltage-source PWM rectifier–inverter based on direct power control and its operation characteristics [J]. Power Electronics, IEEE Transactions on, 2011, 26(5): 1559-1567.

DOI: 10.1109/tpel.2010.2086488

[8] Dannehl J, Fuchs F W, Hansen S, et al. Investigation of active damping approaches for PI-based current control of grid-connected PWM converters with LCL filters[C]/Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE. IEEE, 2009: 2998-3005.

DOI: 10.1109/ecce.2009.5316527

[9] Guo W, Lin F, Zheng T. Nonlinear PI control for three-phase PWM AC-DC converter[C]/Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE. IEEE, 2005: 5 pp.

DOI: 10.1109/iecon.2005.1569057

[10] Pogaku N, Prodanovic M, Green T C. Modeling, analysis and testing of autonomous operation of an inverter-based microgrid[J]. Power Electronics, IEEE Transactions on, 2007, 22(2): 613-625.

DOI: 10.1109/tpel.2006.890003