Modeling and Analysis of UserDefinedConstantSwitching Frequency DSTATCOM for Three Phase Four Wire Distribution System
International Journal of Engineering Trends and Technology (IJETT)  

© 2012 by IJETT Journal  
Volume3 Issue2 

Year of Publication : 2012  
Authors : S. Suresh, Dr. Devarajan,N.Vidhya,V. Rajasekaran 
S. Suresh, Dr. Devarajan,N.Vidhya,V. Rajasekaran. " Modeling and Analysis of UserDefinedConstantSwitching Frequency DSTATCOM for Three Phase Four Wire Distribution System". International Journal of Engineering Trends and Technology (IJETT). V3(2):213220 MarApr 2012. ISSN:22315381. www.ijettjournal.org. published by seventh sense research group
Abstract
This paper deals with modeling and analysis of User Defined Constant Switching (UDCS) frequency current  controlled based four  leg DSTATCOM . The first three  phase legs are operated in hysteresis current tracking mode, and the neutral is operated by fixed switching square pulses of desired frequency. Consequently, the first three legs get tuned to the fourth leg’s user defined frequency. Analytical expression s are derived to specify the range of frequency at which the scheme functions effectively. Design procedure for selection parameter of the four leg inverter such as hysteresis band, DC link voltage, DC link capacitor and inductor are suggested, and simulations are done to value the design procedure for a UDCS  controller based DSTATCOM. Comparison is made between the performance of the UDCS controlled DSTATCOM and conventional hysteresis  controlled DST ATCOM and presented
References
[1] M. P. Kazmierkowski and L. Malesani, “Current control techniques for three  phase voltage  source PWM conver ters: A survey,” IEEE Trans. Ind. Electron., vol. 45, no. 5, pp. 691 – 703, Oct. 1998.
[2] C. S. Quinn and N. Mohan, “Active filtering of harmonic currents in three  phase, four  wire systems with three  phase and single  phase nonlinear loads,” in Proc. IEEE Ap pl. Power Electron.Conf., 1992, pp. 829 – 836.
[3] J.Holtz, “Pulse width modulation — A survey,” IEEE Trans. Ind. Electron., vol. 39, no. 5, pp. 410 – 420, Dec. 1992.
[4] S. Buso, L. Malesani, and P. Mattavelli, “Comparison of current control techniques for act ive power filter applications,” IEEE Trans. Ind. Electron., vol. 45, no. 5, pp. 722 – 729, Oct. 1998.
[5] S. M. Ali and M. P. Kazmierkowski, “PWM voltage and current control of four  leg VSI,” in Proc. IEEE ISIE 1998, vol. 1, pp. 196 – 201.
[6] D. M. Brod and D . W. Novotny, “Current control of VSI – PWM inverters,” IEEE Trans. Ind. Appl., vol. 1A  21, no. 4, pp. 562 – 570, May/Jun. 1985.
[7] Q.Yao and D.G.Holmes, “A simple, novel method for variable  hysteresis band current control of a three phase inverter with const ant switching frequency,” in Proc. IEEE IAS Annu. Meet. Conf. Rec., Toronto, ON, Canada, Oct. 1993, pp. 1122 – 1129.
[8] L. Malesani and P. Tenti, “A novel hysteresis control method for current controlled voltage  source PWM inverters with constant modulation frequency,” IEEE Trans. Ind. Appl., vol. 26, no. 1, pp. 88 – 92, Jan. 1990.
[9] L. Malesani, P. Mattavelli, and P. Tomasin, “High  performance hysteresis modulation technique for active filters,” IEEE Trans. Power Electron., vol. 12, no. 5, pp. 876 – 884, Sep. 1997.
[10] B. K. Bose, “An adaptive hysteresis  band current control technique of a voltage  fed PWM inverted for machine drive system,” IEEE Trans. Ind. Electron., vol. 37, no. 5, pp. 402 – 408, Oct. 1990.
[11] T.W. Chun and M.K.Choi , “Development of adaptive hysteresis band current control strategy of PWM inverter with constant switching frequency,” in Proc. IEEE APEC 1996, San Jose, CA, pp. 194 – 199.
[12] F. Liu and A. I. Maswood, “A novel variable hysteresis band current control of three  phase three  level unity PF rectifier with constant switching frequency,” IEEE Trans. Power Electron., vol. 21, no. 6, pp. 1727 – 1734, Nov. 2006.
[13] M. A. Rahman, T. S. Radwan, A. M. Osheiba, and A. E. Lashine, “Analysis of current controller for vo ltage source inverter,” IEEE Trans. Ind. Electron., vol. 44, no. 4, pp. 477 – 485, Aug. 1997.
[14] J. Zeng, C. Yu, Q. Qi, Z. Yan, Y. Ni, B. L. Zhang, S. Chen, and F. F. Wu, “A novel hysteresis current control for active power filter with constant frequency,” Electr. Power Syst. Res., vol. 68, pp. 75 – 82, 2004.
[15] H. M. Kojabadi, B. Yu, I. A. Gadoura, L. Chang, and M. Ghribi, “A novel DSP  based current  controlled PWM strategy for single phase grid connected inverters,” IEEE Trans. Power Electron., vol. 21, no . 4, pp. 985 – 993, Jul. 2006.
[16] R. Wu, S. B. Dewan, and G. R. Slemon, “Analysis of a PWM ac to dc voltage source converter under the predicted current control with a fixed switching frequency,” IEEE Trans. Ind. Appl., vol. 27, no. 4, pp. 756 – 764, Jul./A ug. 1991.
[17] K. P. Louganski and J. S. Lai, “Current phase lead compensation in single phase PFC boost converters with a reduced switching frequency to line frequency ratio,” IEEE Trans. Power Electron., vol. 22, no. 1, pp. 113 – 119, Jan. 2007.
[18] C. T . Pan and T. Y. Chang, “An improved hysteresis current controller for reducing switching frequency,” IEEE Trans. Power Electron., vol. 9, no. 1, pp. 97 – 104, Jan. 1994.
[19] R. Zhang, V. H. Prasad, D. Boroyevich, and F. C. Lee, “Three  dimensional space vect or modulation for four leg voltage source converters,” IEEE Trans. Power Electron., vol. 17, no. 3, pp. 314 – 326, May 2002.
[20] B. H. Kwon, T.W. Kim, and J. H. Youm, “A novel SVM  based hysteresis current controller,” IEEE Trans. Power Electron., vol. 13, n o. 2, pp. 297 – 307, Jan. 1998.
[21] M. A. Perales, M. M. Prats, R. Portillo, and L. G. Franquelo, “Three dimensional space vector modulation in abc coordinates for four  leg voltage source converters,” IEEE Power Electron. Lett., vol. 1, no. 4, pp. 104 – 109 , Dec. 2003.
[22] V. George and M. K. Mishra, “User  defined constant switching frequency current control strategy for a four leg DSTATCOM,” IET Power Electronics,
[23] V. George, M. K. Mishra, and S. Sridharan, “A novel constant frequency strategy for a t hree  leg DSTATCOM,” in Proc. 21st Can. Conf. Electr. Comput. Eng., Niagara Falls, ON, Canada, May 2008, pp. 681 – 684.
[24] P. Lohia, M. K. Mishra, K. Karthikeyan, and K. Vasudevan, “A minimally switched control algorithm for three  phase four  leg VSI topolog y to compensate unbalanced and nonlinear load,” IEEE Trans. Power Electron., vol. 23, no. 4, pp. 1935 – 1944, Jul. 2008
Keywords
Active power filter, constant switching frequency, current control, design, voltage source inverter (VSI)