Comparative Study of Proportional Integral and Passivity based Control for Buck Converter

Passivity Based Controller (PBC) is said to be following energy shaping approach for the faster stabilisation of output response for the given system. In this paper the PBC is implemented in a buck converter fed D.C. drive system. The drive is tested for desired speed requirements with constant and step change in load torque conditions. MATLAB-Simulink is used for simulating the drive system with PBC. The simulated results confirm that the dynamic response of the PBC is much faster in achieving the desired voltage and speed when compared with conventional PI controller.

[1]  R. Krishnan,et al.  Electric Motor Drives: Modeling, Analysis, and Control , 2001 .

[2]  R. Ortega.  Passivity-based control of Euler-Lagrange systems : mechanical, electrical and electromechanical applications , 1998 .

[3]  Hebertt Sira-Ramírez,et al.  Control Design Techniques in Power Electronics Devices , 2006 .

[4]  H. Sira-Ramirez,et al.  Are nonlinear controllers really necessary in power electronics devices? , 2005, 2005 European Conference on Power Electronics and Applications.

[5]  Marco Liserre,et al.  Control of H-bridge based multilevel converters , 2002, Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002 IEEE International Symposium on.

[6]  H. Sira-Ramirez,et al.  A passivity based-sliding mode control approach for the regulation of power factor precompensators , 1998, Proceedings of the 37th IEEE Conference on Decision and Control (Cat. No.98CH36171).

[7]  M. Baja,et al.  Hybrid control of a three-level three-cell dc-dc converter , 2007, 2007 American Control Conference.

[8]  V. Cardenas,et al.  Analysis and Implementation of a Master-Slave Control based on a Passivity Approach for Parallel Inverters Operation , 2006, 2006 IEEE International Power Electronics Congress.

[9]  J. Willems.  Dissipative dynamical systems part I: General theory , 1972 .

[10]  D.U. Campos-Delgado.  Passivity Based Control of Nonlinear DC Motors Configurations and Sensorless Applications , 2007, 2007 IEEE International Symposium on Industrial Electronics.