Voltage Compensation Using Dvr with Modified Switching Band Control

 
 
 
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  • Abstract


    This paper presents mitigation of voltage related Power Quality (PQ) issues by using Dynamic Voltage Restorer (DVR). Three phase four wire DVR with modified switching band controller is proposed. A modified filter circuit band controller is proposed for reducing the switching losses, constant switching frequency maintenance and corresponding simulation studies are carried out. Variable hysteresis band (modified band) controller generates accurate injected voltages by using system parameters and low error value between reference injected voltages, actual injected voltages can be achieved, which helps in smoothening and minimizing ripples in PCC (Point of common coupling) voltages. The obtained simulation results are presented.


  • References


      [1] M. H. J. Bollen, Understanding power quality problems: voltage sags and interruptions. Piscataway, NJ: IEEE Press,2002.

      [2] H. Akagi, “Active harmonic filters,” Proceedings of the IEEE, vol. 93,no. 12, pp.2128– 2141, Dec 2005.

      [3] B. Singh, K. Al-Haddad, and A. Chandra, “A review of active filters for power quality improvement,” IEEE Transactions on Industrial Electronics, vol. 46,no. 5, pp. 960–971, Oct. 1999.

      [4] A. Ghosh and G. Ledwich, “Structures and control of a dynamic voltage regulator (DVR),” in IEEE Power Engineering Society Winter Meeting, 2001, pp. 1027– 1032.

      [5] J. Nielsen, M. Newman, H. Nielsen, and F. Blaabjerg, “Control and testing of a dynamic voltage restorer (DVR) at medium voltage level,” IEEE Transactions on Power Electronics, vol. 19, no. 3, pp. 806–813, May 2004.

      [6] S. Choi, B. Li, and D. Vilathgamuwa, “Dynamic voltage restoration with minimum energy injection,” IEEE Transactions on Power Systems, vol. 15, no. 1, pp.51–57, Feb. 2000.

      [7] B. Wang, G. Venkataramanan, and M. Illindala, “Operation and control of a dynamic voltage restorer using transformer coupled H-bridge converters,” IEEE Transactions on Power Electronics, vol. 21, no. 4, pp. 1053–1061, Jul. 2006.

      [8] B.K. Bose, An adaptive hysteresis band current control technique of a voltage feed PWM inverter for machine drive system, IEEE Trans. Ind. Electron. 37 (5) (1990) 402–406.

      [9] LIU F., MASWOOD A.I.: ‘A novel variable band hysteresis band current control of three- phase three-level unity PF rectifier with constant switching frequency’, IEEE Trans. Power Electron, 2006, 21, (6), pp.1727– 1734.


 

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Article ID: 21855
 
DOI: 10.14419/ijet.v7i4.24.21855




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