A Control Scheme For A 3 –Phase Power Converter With An Unbalanced AC Source

N Gautam Vikas, P Koteswara Rao

Abstract


Three-stage dc–ac control converters experience the ill effects of power oscillation and over current issues in the event of the uneven air conditioning source voltage that can be caused by lattice/generator shortcomings. Existing strategies to deal with these issues are appropriately choosing and controlling the positive-and negative-grouping streams. In this venture, another arrangement of control techniques which use the zero succession segments are proposed to improve the power controllability under this unfriendly condition. It is inferred that by presenting legitimate zero-grouping current controls and relating circuit setups, the power converter can empower more adaptable control targets, accomplishing better exhibitions in the conveyed control and the heap current when experiencing the lopsided voltage. Fuzzy controller is utilized for the better smoothening of yield wave frames. Recreation results are exhibited to confirm the achievability of the proposed approach in MATLAB/SIMULINK condition.


References


F. Blaabjerg, M. Liserre, and K. Ma, “Power controllability of a three phase unbalanced ac source,” IEEE Trans. Ind. Appl., vol. 48, no. 2, pp. 708–719, Mar./Apr. 2012.

R. Teodorescu, M. Liserre, and P. Rodriguez, Grid Converters for Photovoltaicand Wind Power Systems. New York, NY, USA: Wiley-IEEE,2011.

J. Rocabert, G. M. S. Azevedo, A. Luna, J. M. Guerrero, J. I. Candela, andP. Rodriguez, “Intelligent connection agent for three-phase grid-connectedmicrogrids,” IEEE Trans. Power Electron, vol. 26, no. 10, pp. 2993–3005,Oct. 2011.

J. W. Kolar and T. Friedli, “The essence of three-phase PFC rectifiersystems—Part I,” IEEE Trans. Power Electron., vol. 28, no. 1, pp. 176–198, Jan. 2013.

J. Hu, L. Shang, Y. He, and Z. Z. Zhu, “Direct active and reactive powerregulation of grid-connected dc/ac converters using sliding mode controlapproach,” IEEE Trans. Power Electron., vol. 26, no. 1, pp. 210–222, Jan.2011.

C. Wessels, F. Gebhardt, and F. W. Fuchs, “Fault ride-through of a DFIGwind turbine using a dynamic voltage restorer during symmetrical andasymmetrical grid faults,” IEEE Trans. Power Electron., vol. 26, no. 3,pp. 807–815, Mar. 2011.

F. Aghili, “Fault-tolerant torque control of BLDC motors,” IEEE Trans.Power Electron., vol. 26, no. 2, pp. 355–363, Feb. 2011.

Y. Xiangwu, G. Venkataramanan, W. Yang, D. Qing, and Z. Bo, “Gridfaulttolerant operation of a DFIG wind turbine generator using a passiveresistance network,” IEEE Trans. Power Electron., vol. 26, no. 10,pp. 2896–2905, Oct. 2011.

B. A. Welchko, T. A. Lipo, T. M. Jahns, and S. E. Schulz, “Fault tolerantthree-phase AC motor drive topologies: A comparison of features, cost,and limitations,” IEEE Trans. Power Electron., vol. 19, no. 4, pp. 1108–1116, Jul. 2004.


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