Design of passive filter components for switching band controlled DVR

This paper presents a filter structure for improving the performance of switching band controlled Dynamic Voltage Restorer (DVR) and a systematic design procedure for the passive filter components. The switching operation of VSI is accompanied by a band controller which restricts the injected voltages within a band, defined about a reference voltage. Switching band control method exhibits merits such as fast dynamic response, robustness, zero magnitude / phase errors and ease in implementation. The performance of the band controller is improved using a novel filter structure. Quantitative expressions involving the dynamics of DVR and variation in switching frequency are also derived. The passive filter components are designed based on switching frequency and inverter rating. The proposed filter structure and design procedure for the DVR filter components are validated by carrying out PSCAD simulation studies.

[1]  D.M. Vilathgamuwa,et al.  A generalized voltage compensation strategy for mitigating the impacts of voltage sags/swells , 2005, IEEE Transactions on Power Delivery.

[2]  Seung-Ki Sul,et al.  Compensation voltage control in dynamic voltage restorers by use of feed forward and state feedback scheme , 2005 .

[3]  S. S. Choi,et al.  Design considerations on the line-side filter used in the dynamic voltage restorer , 2001 .

[4]  F.A.L. Jowder Modeling and Simulation of Dynamic Voltage Restorer (DVR) Based on Hysteresis Voltage Control , 2007, IECON 2007 - 33rd Annual Conference of the IEEE Industrial Electronics Society.

[5]  G. Ledwich,et al.  Compensation of Distribution System Voltage Using Dynamic Voltage Restorer (DVR) , 2002, IEEE Power Engineering Review.

[6]  Math Bollen,et al.  Understanding Power Quality Problems , 1999 .

[7]  Math Bollen,et al.  Understanding Power Quality Problems: Voltage Sags and Interruptions , 1999 .

[8]  Carl N.M. Ho,et al.  Fast Transient Control for Three-Phase Capacitor-Supported Dynamic Voltage Restorer (DVR) , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

[9]  Henry Shu-Hung Chung,et al.  Dynamic hysteresis band control of the buck converter with fast transient response , 2005, IEEE Transactions on Circuits and Systems II: Express Briefs.

[10]  Seung-Ki Sul,et al.  Compensation voltage control in dynamic voltage restorers by use of feed forward and state feedback scheme , 2005, IEEE Transactions on Power Electronics.

[11]  Frede Blaabjerg,et al.  Design and comparison of high performance stationary-frame controllers for DVR implementation , 2006, Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06..

[12]  Frede Blaabjerg,et al.  Control and testing of a dynamic voltage restorer (DVR) at medium voltage level , 2004 .

[13]  Nicholas Jenkins,et al.  Four-wire dynamic voltage restorer based on a three-dimensional voltage space vector PWM algorithm , 2003 .

[14]  Nicholas Jenkins,et al.  Dynamic voltage restorer based on voltage-space-vector PWM control , 2001 .

[15]  S. W. Middlekauff,et al.  System and customer impact: considerations for series custom power devices , 1998 .

[16]  H.S.H. Chung,et al.  Design and Implementation of a Fast Dynamic Control Scheme for Capacitor-Supported Dynamic Voltage Restorers , 2008, IEEE Transactions on Power Electronics.

[17]  A. Ghosh,et al.  Design of a capacitor-supported dynamic voltage restorer (DVR) for unbalanced and distorted loads , 2004, IEEE Transactions on Power Delivery.