Sliding mode control of converter in distributed generation using DSTATCOM

In this paper, a control strategy based on the sliding mode control is used to achieve robust control of a distribution static compensator (DSTATCOM) which is controlled as voltage source converter for the grid interface of wind turbine-generator system. The DSTATCOM is used to control the voltage of the bus to which it is connected to a balance sinusoid in respect of the harmonic distortions in supply or load side of the three-phase system. A variable speed wind turbine generator is used to produce a variable DC voltage which is placed as input voltage source to the converter of the DSTATCOM. Easily implemented sliding surface provide prominent dynamic performance against changes in the load and in the input dc voltage due to wind variations. A control strategy for grid voltage control has been implemented in respect of the wind variations. The results are verified using PSCAD/EMTDC simulation studies.

[1]  Arindam Ghosh,et al.  Load compensating DSTATCOM in weak AC systems , 2003 .

[2]  Arindam Ghosh,et al.  Frequency-domain characterization of sliding mode control of an inverter used in DSTATCOM application , 2006, IEEE Transactions on Circuits and Systems I: Regular Papers.

[3]  M. Marchesoni,et al.  Experimental study of a power conditioning system using sliding mode control , 1996 .

[4]  Luca Solero,et al.  Performance of a 10 kW power electronic interface for combined wind/PV isolated generating systems , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[5]  Wei Zhang,et al.  Research on Wind Turbine Emulation based on DC Motor , 2007, 2007 2nd IEEE Conference on Industrial Electronics and Applications.

[6]  R. Gupta,et al.  Voltage and power flow control of grid connected wind generation system using DSTATCOM , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[7]  R. Gupta,et al.  Cascaded multilevel control of DSTATCOM using multiband hysteresis modulation , 2006, 2006 IEEE Power Engineering Society General Meeting.

[8]  M. Chinchilla,et al.  Laboratory set-up for wind turbine emulation , 2004, 2004 IEEE International Conference on Industrial Technology, 2004. IEEE ICIT '04..

[9]  Arindam Ghosh,et al.  Operation of a DSTATCOM in voltage control mode , 2002 .

[10]  A. Ghosh,et al.  State Feedback Control of Multilevel Inverters for DSTATCOM Applications , 2007, IEEE Transactions on Power Delivery.

[11]  Arindam Ghosh,et al.  A flexible DSTATCOM operating in voltage or current control mode , 2002 .

[12]  Shen Ming,et al.  Reactive power and unbalance compensation with DSTATCOM , 2005, 2005 International Conference on Electrical Machines and Systems.