A Fault-Tolerant Strategy to Control the Matrix Converter Under an Open-Switch Failure

In this paper, a new post-fault modulation strategy is proposed to operate the direct matrix converter as close as possible to its desired normal operation under an open-switch fault condition. The proposed strategy determines appropriate switching states associated with eight, out of the nine, remaining healthy switches of the converter, to synthesize the reference voltages. The corresponding duty cycles of the determined switching states are calculated by formulating a nonlinear optimization problem that aims at minimization of the error between the desired reference voltages and the voltages generated by the switching states. The solution to the nonlinear optimization problem is obtained based on the Karush-Kuhn-Tucker conditions. The performance of the proposed modulation strategy is evaluated based on time-domain simulation studies in the MATLAB/Simulink software environment and also experimentally verified.

[1]  A. Alesina,et al.  Analysis and design of optimum-amplitude nine-switch direct AC-AC converters , 1989 .

[2]  Johann W. Kolar,et al.  A Review of Control and Modulation Methods for Matrix Converters , 2012, IEEE Transactions on Industrial Electronics.

[3]  Reza Iravani,et al.  Three-Leg/Four-Leg Matrix Converter Generalized Modulation Strategy—Part II: Implementation and Verification , 2013, IEEE Transactions on Industrial Electronics.

[4]  Reza Iravani,et al.  Three-Leg/Four-Leg Matrix Converter Generalized Modulation Strategy—Part I: A New Formulation , 2013, IEEE Transactions on Industrial Electronics.

[5]  Sedat Sünter,et al.  Control of a permanent magnet synchronous motor fed by a direct AC-AC converter , 2005 .

[6]  U. Drofenik,et al.  A General Scheme for Calculating Switching- and Conduction-Losses of Power Semiconductors in Numerical Circuit Simulations of Power Electronic Systems; International Power Electronics Conference; ; IPEC-Niigata 2005 , 2005 .

[7]  Lee Empringham,et al.  Fault-Tolerant Matrix Converter Motor Drives With Fault Detection of Open Switch Faults , 2012, IEEE Transactions on Industrial Electronics.

[8]  Tian-Hua Liu,et al.  Improvement of Matrix Converter Drive Reliability by Online Fault Detection and a Fault-Tolerant Switching Strategy , 2012, IEEE Transactions on Industrial Electronics.

[9]  Sangshin Kwak,et al.  Phase-Redundant-Based Reliable Direct AC/AC Converter Drive for Series Hybrid Off-Highway Heavy Electric Vehicles , 2010, IEEE Transactions on Vehicular Technology.

[10]  Edwin K. P. Chong,et al.  An Introduction to Optimization: Chong/An Introduction , 2008 .

[11]  Sangshin Kwak,et al.  Fault-Tolerant Structure and Modulation Strategies With Fault Detection Method for Matrix Converters , 2010, IEEE Transactions on Power Electronics.

[12]  Sangshin Kwak,et al.  Four-Leg-Based Fault-Tolerant Matrix Converter Schemes Based on Switching Function and Space Vector Methods , 2012, IEEE Transactions on Industrial Electronics.

[13]  Johann W. Kolar,et al.  Comparative Evaluation of Three-Phase AC–AC Matrix Converter and Voltage DC-Link Back-to-Back Converter Systems , 2012, IEEE Transactions on Industrial Electronics.

[14]  Athanasios N. Safacas,et al.  Open-Circuit Fault Diagnosis for Matrix Converter Drives and Remedial Operation Using Carrier-Based Modulation Methods , 2014, IEEE Transactions on Industrial Electronics.

[15]  Johann W. Kolar,et al.  Technological Issues and Industrial Application of Matrix Converters: A Review , 2013, IEEE Transactions on Industrial Electronics.

[16]  H.A. Toliyat,et al.  Remedial Switching Function Approach to Improve Reliability for AC–AC Converters , 2007, IEEE Transactions on Energy Conversion.

[17]  André M. S. Mendes,et al.  A New Fault Diagnosis Method and a Fault-Tolerant Switching Strategy for Matrix Converters Operating With Optimum Alesina-Venturini Modulation , 2012, IEEE Transactions on Industrial Electronics.

[18]  H.A. Toliyat,et al.  An Approach to Fault-Tolerant Three-Phase Matrix Converter Drives , 2007, IEEE Transactions on Energy Conversion.

[19]  O. Nelles,et al.  An Introduction to Optimization , 1996, IEEE Antennas and Propagation Magazine.

[20]  M. Saeedifard,et al.  An on-line fault detection and a post-fault strategy to improve the reliability of matrix converters , 2013, 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[21]  A. Tani,et al.  Space vector control of matrix converters with unity input power factor and sinusoidal input/output waveforms , 2002 .

[22]  E. Robles,et al.  A fault tolerant space vector modulation strategy for matrix converters , 2009, 2009 35th Annual Conference of IEEE Industrial Electronics.