FPGA-Based Reconfigurable Control for Fault-Tolerant Back-to-Back Converter Without Redundancy

In this paper, an FPGA-based fault-tolerant back-to-back converter without redundancy is studied. Before fault occurrence, the fault-tolerant converter operates like a conventional back-to-back six-leg converter, and after the fault, it becomes a five-leg converter. Design, implementation, and experimental verification of an FPGA-based reconfigurable control strategy for this converter are discussed. This reconfigurable control strategy allows the continuous operation of the converter with minimum affection from a fault in one of the semiconductor switches. A very fast detection scheme is used to detect and locate the fault. Implementation of the fault detection and of the fully digital control schemes on a single FPGA is realized, based on a suited methodology for rapid prototyping. FPGA in loop and also experimental tests are carried out, and the results are presented. These results confirm the capability of the proposed reconfigurable control and fault-tolerant structure.

[1]  M. Jones,et al.  A performance comparison of PWM techniques for five-leg VSIs supplying two-motor drives , 2008, 2008 34th Annual Conference of IEEE Industrial Electronics.

[2]  Daniel U. Campos-Delgado,et al.  An Observer-Based Diagnosis Scheme for Single and Simultaneous Open-Switch Faults in Induction Motor Drives , 2011, IEEE Transactions on Industrial Electronics.

[3]  Daniel U. Campos-Delgado,et al.  Fault-tolerant control in variable speed drives: a survey , 2008 .

[4]  Shahram Karimi,et al.  FPGA-Based Real-Time Power Converter Failure Diagnosis for Wind Energy Conversion Systems , 2008, IEEE Transactions on Industrial Electronics.

[5]  L Idkhajine,et al.  FPGA-based Controllers , 2011, IEEE Industrial Electronics Magazine.

[6]  Mariesa L. Crow,et al.  Fault Detection and Mitigation in Multilevel Converter STATCOMs , 2011, IEEE Transactions on Industrial Electronics.

[7]  Man Ho Kim,et al.  Kalman Predictive Redundancy System for Fault Tolerance of Safety-Critical Systems , 2010, IEEE Transactions on Industrial Informatics.

[8]  A.M.N. Lima,et al.  Fault tolerant reversible AC motor drive system , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[9]  Shahrin Md. Ayob,et al.  FPGA Implementation of a Single-Input Fuzzy Logic Controller for Boost Converter With the Absence of an External Analog-to-Digital Converter , 2012, IEEE Transactions on Industrial Electronics.

[10]  B. Francois,et al.  Control implementation of a five-leg AC-AC converter to supply a three-phase induction machine , 2005, IEEE Transactions on Power Electronics.

[11]  Didier Theilliol,et al.  A Failure-Detection Strategy for IGBT Based on Gate-Voltage Behavior Applied to a Motor Drive System , 2011, IEEE Transactions on Industrial Electronics.

[12]  Mohammad Reza Zolghadri,et al.  Five-leg converter topology for wind energy conversion system with doubly fed induction generator , 2011 .

[13]  Drazen Dujic,et al.  Five-leg inverter PWM technique for reduced switch count two-motor constant power applications , 2008 .

[14]  Zeliang Shu,et al.  Steady-State and Dynamic Study of Active Power Filter With Efficient FPGA-Based Control Algorithm , 2008, IEEE Transactions on Industrial Electronics.

[15]  Eric Monmasson,et al.  FPGAs in Industrial Control Applications , 2011, IEEE Transactions on Industrial Informatics.

[16]  Pablo Lezana,et al.  Fault Detection on Multicell Converter Based on Output Voltage Frequency Analysis , 2009, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[17]  E. H. K. Fung,et al.  Intelligent Automatic Fault Detection for Actuator Failures in Aircraft , 2009, IEEE Transactions on Industrial Informatics.

[18]  Farzad Rajaei Salmasi,et al.  Detection and Isolation of Speed-, DC-Link Voltage-, and Current-Sensor Faults Based on an Adaptive Observer in Induction-Motor Drives , 2011, IEEE Transactions on Industrial Electronics.

[19]  Farhat Fnaiech,et al.  An Efficient DSP-FPGA-Based Real-Time Implementation Method of SVM Algorithms for an Indirect Matrix Converter , 2011, IEEE Transactions on Industrial Electronics.

[20]  Oscar Garcia,et al.  Concurrent and simple digital controller of an AC/DC converter with power factor correction based on an FPGA , 2003 .

[21]  Philippe Poure,et al.  FPGA-based fully digital fast power switch fault detection and compensation for three-phase shunt active filters , 2008 .

[22]  T.A. Lipo,et al.  Fault tolerant three-phase AC motor drive topologies: a comparison of features, cost, and limitations , 2003, IEEE Transactions on Power Electronics.

[23]  Shahram Karimi,et al.  An HIL-Based Reconfigurable Platform for Design, Implementation, and Verification of Electrical System Digital Controllers , 2010, IEEE Transactions on Industrial Electronics.

[24]  Girish Nanjundaiah,et al.  Hardware-in-the-Loop (HIL) to reduce the development cost of power electronic converters , 2011, India International Conference on Power Electronics 2010 (IICPE2010).

[25]  Janusz Nieznanski,et al.  Open-Transistor Fault Diagnostics in Voltage-Source Inverters by Analyzing the Load Currents , 2007, IEEE Transactions on Industrial Electronics.

[26]  Barry W. Williams,et al.  System reconfiguration under open-switch faults in a doubly fed induction machine , 2010 .