Power Quality Improvement for Grid Connected Renewable Energy Conversion System Using FLC
Power quality management for a hybrid power system (solar and wind power) is done by fuzzy logic using a seven level cascaded multilevel inverter is proposed here. The implementation of the seven level cascaded inverter is to maintain the THD level of the power system with in IEEE standard (5%). The hybrid scheme comprises one set of rectifier unit which is connected to the wind system. PV voltage and rectifier voltage is given as input to the seven level inverter. The proposed inverter reduces the switching loss complexity, size and cost. The PWM signals are originated by using FL controller. MPPT algorithm is implemented to improve the voltage of PV panel. The inverted three phase voltage is obtained by functioning the FL membership functions which helps in maintaining the harmonics level below 5%. The fuzzy logic technique has been encouraged in the field of research of converter, motor drives and other intelligent controllers. This process has quick access and it is simpler to integrate. Mamdani model of FL has enhanced in this paper to give linear output when compared to Tsukeno model. Fuzzy logic controller was developed and verified for three phase systems using the simulink MATLAB 2009a in which the components are arranged according to the circuit required. In MATLAB based defuzzification centroid method of fuzzification is done to defuzzify.
Yuehua Huang, Yang Xu, Xingchen Zhou, “Study on Wind-solar Hybrid Generating System Control Strategy,” IEEE 2011.
Yuncong Z.Jiang, A. Jaber Abu Qahouq and Mohamed Orabi, “Matlab/Pspice Hybrid Simulation Modeling of Solar PV Cell/Module,” IEEE 2011.X. She, A. Q. Huang, T. Zhao, and G. Wang, ―Coupling effect reduction of a voltage-balancing controller in single-phase cascaded multilevel converters,‖ IEEE Trans. Power Electron., vol. 27, no. 8, pp. 3530– 3543, Aug. 2012.
S. Choi and M. Saeedifard, ―Capacitor voltage balancing of flying capacitor multilevel converters by space vector PWM,‖ IEEE Trans. Power Delivery, vol. 27, no. 3, pp. 1154–1161, Jul. 2012.
R. A. Mastromauro, M. Liserre, and A. Dell‘ Aquila, ―Control issues in single-stage photovoltaic systems: MPPT, current and voltage control,‖ IEEE Trans. Ind. Informat., vol. 8, no. 2, pp. 241–254, May. 2012.
L. Maharjan, T. Yamagishi, and H. Akagi, ―Active-power control of individual converter cells for a battery energy storage system based on a multilevel cascade PWM converter,‖ IEEE Trsssssssans. Power Electron. vol. 27, no. 3, pp. 1099–1107, Mar. 2012.
N. A. Rahim, K. Chaniago, and J.Selvaraj, ―Single-phaseJinn-Chang Wu, Member, IEEE, and Chia-Wei Chou, ―A Solar Power Generation System With a Seven-Level Inverter,‖ IEEE Trans. Power Electron., vol. 29,no. 7, pp. 3454–3462, July. 2014.
Fan Zhang, KaryThanapalan, Andrew Procter, Stephen Carr, and Jon Maddy, ―Adaptive Hybrid Maximum Power Point Tracking Method for a Photovoltaic System‖ IEEE Trans. Energy Conversion, vol. 28, no. 2, pp.353-360, June. 2013.
J. D. Barros, J. F. A. Silva, and E.G.A Jesus, ―Fast-predictive optimal control of NPC multilevel converters,‖ IEEE Trans. Ind. Electron., vol. 60, no. 2, pp. 619–627, Feb. 2013.
J. Chavarria, D. Biel, F. Guinjoan, C.Meza, and J. J. Negroni, ―Energy balance control of PV cascaded multilevel grid-connected inverters under level-shifted and phase-shifted PWMs,‖ IEEE Trans. . Electron. vol. 60, no1, pp. 98–111, Jan. 2013.
V. Blasko, “Analysis of a hybrid PWM based on modified space-vector and triangle-comparison methods", IEEE Trans. Ind. Applicat., vol. 33, pp. 756 1997.
A.M. Hava and E. Ün, “Performance analysis of reduced common mode voltage PWM methods and comparison with standard PWM methods for three-phase voltage source inverters,‟‟ IEEE Trans. Power Electron., vol. 24, no. 1, pp. 241–252, Jan. 2009.
C. Mei, J.C. Balda, and W.P. Waite, “Cancellation of common-mode voltages for induction motor drives using active method,” IEEE Trans. on Energy Conversion, vol. 21, no 2, pp. 380 – 386. June 2006.
S. Ogasawara, H. Ayano, and H. Akagi, “An active circuit for cancellation of common-mode voltage generated by a PWM inverter,” IEEE Trans. on Power Electron., vol 13, pp. 835-841, September, 1998.
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