Performance comparison between nonlinear and linear controllers with weighted adaptive control applied to a buck converter using poles placement design

This work presents a comparative study between four control strategies applied to a buck converter: Linear PID, Adaptive nonlinear PID with Gaussian Gain Functions (ANLPID-GGF), Linear Quadratic Regulator (LQR) and (State-dependent Riccati Equation) SDRE. In the case of the buck converter application, SDRE exhibited a better overall performance, but lacks a null error characteristic, typical of a control with an integral component. Taken the converter transfer function, the designs of the four controllers are set so the operating point of the closed loop system presents the same natural frequency. Based on the fore mentioned study, weighted combinations of the controls are proposed and analyzed. In the case, the weighted combination aims to gather the best of a particular control technique in order to achieve better results when compared to a single control technique. The weights are dependent on the error range. Some performance enhancements have been observed. Simulation results of the proposed control schemes are presented.

[1]  S. Eshtehardiha,et al.  Optimizing LQR and pole placement to control buck converter by genetic algorithm , 2007, 2007 International Conference on Control, Automation and Systems.

[2]  P.T. Krein,et al.  Digital Control Generations -- Digital Controls for Power Electronics through the Third Generation , 2007, 2007 7th International Conference on Power Electronics and Drive Systems.

[3]  Yun Li,et al.  PID control system analysis, design, and technology , 2005, IEEE Transactions on Control Systems Technology.

[4]  Qiang Sun,et al.  Application of Sliding Mode Control for Half-Bridge DC/DC Converter , 2010, 2010 International Conference on E-Product E-Service and E-Entertainment.

[5]  D. Giaouris,et al.  Adaptive PD+I Control of a Switch-Mode DC–DC Power Converter Using a Recursive FIR Predictor , 2011, IEEE Transactions on Industry Applications.

[6]  Tomoki Yokoyama,et al.  A design of FPGA based hardware controller for DC-DC converter using SDRE approach , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[7]  Ching-Chih Tsai,et al.  Adaptive voltage regulation of PWM buck DC-DC converters using backstepping sliding mode control , 2004, Proceedings of the 2004 IEEE International Conference on Control Applications, 2004..

[8]  O. Lucia,et al.  Hardware-in-the-loop simulation of FPGA embedded processor based controls for power electronics , 2011, 2011 IEEE International Symposium on Industrial Electronics.

[9]  M. Kaster,et al.  ANÁLISE DO USO DE CONTROLE PID NÃO LINEAR APLICADO A CONVERSOR BUCK , 2011 .

[10]  Jaber A. Abu Qahouq,et al.  Linearized sensorless adaptive voltage positioning controller for DC-DC boost power converter , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[11]  Hong Viet Luu,et al.  Control of front-end converter with shunt active filter using adaptive gain , 2005, 2005 European Conference on Power Electronics and Applications.

[12]  VaraPrasad Arikatla,et al.  Adaptive digital proportional-integral-derivative controller for power converters , 2012 .

[13]  Heinz Unbehauen,et al.  Adaptive dual control systems: a survey , 2000, Proceedings of the IEEE 2000 Adaptive Systems for Signal Processing, Communications, and Control Symposium (Cat. No.00EX373).

[14]  Yue Zhao,et al.  A third-order sliding-mode controller for DC/DC converters with constant power loads , 2011, 2011 IEEE Industry Applications Society Annual Meeting.

[15]  Han Ho Choi,et al.  Fuzzy Sliding Mode Speed Controller for PM Synchronous Motors With a Load Torque Observer , 2012, IEEE Transactions on Power Electronics.

[16]  Wei Wang,et al.  Design and Implementation of Modular FPGA-Based PID Controllers , 2007, IEEE Transactions on Industrial Electronics.

[17]  Tomoki Yokoyama,et al.  SDRE control of single phase PWM inverter using FPGA based hardware controller , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[18]  Cui Guang-zhao,et al.  Adaptive neuron PID control of Buck type AC chopper voltage regulator , 2009, 2009 Fourth International on Conference on Bio-Inspired Computing.