Digital Control of a Shunt Hybrid Power Filter Adopting a Nonlinear Control Approach

This paper proposes a nonlinear derivative-less control approach for controlling a three-phase shunt hybrid power filter (SHPF). The dynamic model of the SHPF system is first elaborated in the stationary frame and then transformed into a “dq” reference frame. The control system is divided into two separate loops, namely the two current dynamics inner loop and the dc voltage dynamic outer loop. The exact feedback linearization technique is used to decouple the inner loop variables. Proportional-integral controllers are utilized to control the SHPF input currents and dc-bus voltage. The proposed nonlinear control is first simulated and then validated on a 2.5-kVA laboratory prototype supported by the DS 1104 digital real-time controller board of dSPACE. Satisfactory results, such as low-ac-current total harmonic distortion, fast step response, and high robustness under load variation, are obtained. Significantly high correlation between the experimental results and the theoretical model, implemented with SIMULINK/Matlab, is obtained.

[1]  R. L. de Araújo Ribeiro,et al.  A Robust Adaptive Control Strategy of Active Power Filters for Power-Factor Correction, Harmonic Compensation, and Balancing of Nonlinear Loads , 2012, IEEE Transactions on Power Electronics.

[2]  Kamal Al-Haddad,et al.  Two PWM techniques for single-phase shunt active power filters employing a direct current control strategy , 2008 .

[3]  Kamal Al-Haddad,et al.  A Lyapunov-Function-Based Control for a Three-Phase Shunt Hybrid Active Filter , 2012, IEEE Transactions on Industrial Electronics.

[4]  Shaahin Filizadeh,et al.  An Optimized Space Vector Modulation Sequence for Improved Harmonic Performance , 2009, IEEE Transactions on Industrial Electronics.

[5]  H. Lin.  Intelligent Neural Network-Based Fast Power System Harmonic Detection , 2007, IEEE Transactions on Industrial Electronics.

[6]  Kamal Al-Haddad,et al.  A review of active filters for power quality improvement , 1999, IEEE Trans. Ind. Electron..

[7]  Kamal Al-Haddad,et al.  A New Control Technique for Three-Phase Shunt Hybrid Power Filter , 2009, IEEE Transactions on Industrial Electronics.

[8]  Juan Dixon,et al.  Cascaded Nine-Level Inverter for Hybrid-Series Active Power Filter, Using Industrial Controller , 2010, IEEE Transactions on Industrial Electronics.

[9]  Avik Bhattacharya,et al.  A Shunt Active Power Filter With Enhanced Performance Using ANN-Based Predictive and Adaptive Controllers , 2011, IEEE Transactions on Industrial Electronics.

[10]  Kamal Al-Haddad,et al.  DSP‐based implementation of an improved control algorithm of a three‐phase active filter for compensation of unbalanced non‐linear loads , 2007 .

[11]  Johann W. Kolar,et al.  Implementation of a Transformerless Common-Mode Active Filter for Offline Converter Systems , 2010, IEEE Transactions on Industrial Electronics.

[12]  Qiaofu Chen,et al.  Series hybrid active power filter based on controllable harmonic impedance , 2012 .

[13]  Junyi Liu,et al.  Control Design and Implementation for High Performance Shunt Active Filters in Aircraft Power Grids , 2012, IEEE Transactions on Industrial Electronics.

[14]  Zicheng Li.  Consistency Between Two Adaptive Detection Methods for Harmonic and Reactive Currents , 2011, IEEE Transactions on Industrial Electronics.

[15]  C. H. da Silva,et al.  New Strategies for Application of Adaptive Filters in Active Power Filters , 2011, IEEE Transactions on Industry Applications.

[16]  Kamal Al-Haddad,et al.  Experimental Design of a Nonlinear Control Technique for Three-Phase Shunt Active Power Filter , 2010, IEEE Transactions on Industrial Electronics.

[17]  Mohd Amran Mohd Radzi,et al.  Neural Network and Bandless Hysteresis Approach to Control Switched Capacitor Active Power Filter for Reduction of Harmonics , 2009, IEEE Transactions on Industrial Electronics.

[18]  R. L. de Araujo Ribeiro,et al.  A Robust Adaptive Control Strategy of Active Power Filters for Power-Factor Correction, Harmonic Compensation, and Balancing of Nonlinear Loads , 2012 .

[19]  Marcelo Lobo Heldwein,et al.  Active Power Filter Control Strategy With Implicit Closed-Loop Current Control and Resonant Controller , 2013, IEEE Transactions on Industrial Electronics.

[20]  Pablo Fernandez-Comesana,et al.  A Signal-Processing Adaptive Algorithm for Selective Current Harmonic Cancellation in Active Power Filters , 2009, IEEE Transactions on Industrial Electronics.

[21]  Kamal Al-Haddad,et al.  DSP-Based Implementation of an LQR With Integral Action for a Three-Phase Three-Wire Shunt Active Power Filter , 2009, IEEE Transactions on Industrial Electronics.

[22]  Hirofumi Akagi,et al.  Instantaneous power theory and applications to power conditioning , 2007 .

[23]  Ming-Ji Yang,et al.  Model Reference Adaptive Control Design for a Shunt Active Power Filter System , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[24]  Raymundo E. Torres-Olguin,et al.  A Repetitive-Based Controller for the Compensation of $6\ell\pm 1$ Harmonic Components , 2008, IEEE Transactions on Industrial Electronics.

[25]  K. Al-Haddad,et al.  A Comparative Study of Two PWM Techniques for Single-Phase Shunt Active Power Filters Employing Direct Current Control Strategy , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[26]  Subhashish Bhattacharya,et al.  Flux-based active filter controller , 1995 .

[27]  G. Escobar,et al.  A repetitive-based controller for the compensation of 6l ± 1 harmonic components , 2007, 2007 IEEE International Symposium on Industrial Electronics.

[28]  Simon Ostroznik,et al.  A Study of a Hybrid Filter , 2010, IEEE Transactions on Industrial Electronics.

[29]  Chi-Seng Lam,et al.  Adaptive DC-Link Voltage-Controlled Hybrid Active Power Filters for Reactive Power Compensation , 2012, IEEE Transactions on Power Electronics.

[30]  Bhim Singh,et al.  Hybrid filters for power quality improvement , 2005 .

[31]  Ned Mohan,et al.  Filtering of harmonic currents and damping of resonances in power systems with a hybrid-active filter , 1995, Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95.