Fault-tolerant permanent magnet machines: a review

Synchronous permanent magnet (PM) machines have been gaining a lot of interest over the years. This is due to their several advantages including high power density, high efficiency and high reliability. One of the key concerns about PM machines especially in safety-critical applications (such as the more-electric aircraft) has been the issue of fault-tolerance since the machine cannot be de-excited. A lot of work has been done both on the machine side as well as the power converter side (including power converter configuration and remedial control strategies). This study will provide a thorough review and summary of what has been covered in literature up-to-date. The study will highlight the tradeoffs (including weight, cost and reliability) involved in the various proposed methods and strategies with more emphasis on the machine side. The methods discussed in this study include active control methods form converter side, memory motors, doubly-salient and flux-switching machines, use of auxiliary windings, mechanical flux-weakening methods, use of shunts and shields, thermal protection and transverse flux machines. The study will also include some comments about where the research in this area is heading in the future.

[1]  R. Nilssen,et al.  Performance Comparisons Among Radial-Flux, Multistage Axial-Flux, and Three-Phase Transverse-Flux PM Machines for Downhole Applications , 2010, IEEE Transactions on Industry Applications.

[2]  A. Bouscayrol,et al.  Control of a Seven-phase Axial Flux Machine Designed for Fault Operation , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[3]  S. Bolognani,et al.  PM motor drives for steer-by-wire applications , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[4]  John James Anthony Cullen,et al.  Favourable slot and pole number combinations for fault-tolerant PM machines , 2004 .

[5]  T.A. Lipo,et al.  Optimum Control of a Five-phase Integrated Modular Permanent Magnet Motor Under Normal and Open-Circuit Fault Conditions , 2007, 2007 IEEE Power Electronics Specialists Conference.

[6]  N. Bianchi,et al.  Strategies for the Fault-Tolerant Current Control of a Five-Phase Permanent-Magnet Motor , 2007, IEEE Transactions on Industry Applications.

[7]  John James Anthony Cullen,et al.  Implications of shorted turn faults in bar wound PM machines , 2004 .

[8]  F. Crescimbini,et al.  Permanent-magnet, direct-drive, starter/alternator machine with weakened flux linkage for constant-power operation over extremely wide speed range , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[9]  H.A. Toliyat,et al.  Five-phase permanent magnet motor drives for ship propulsion applications , 2005, IEEE Electric Ship Technologies Symposium, 2005..

[10]  Seung-Ki Sul,et al.  Comparison of PM motor structures and sensorless control techniques for zero-speed rotor position detection , 2006 .

[11]  Y.G. Guo,et al.  Comparative study of 3D flux electrical machines with soft magnetic composite cores , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[12]  Bernd Orlik,et al.  Transverse flux machines with distributed windings for in-wheel applications , 2009, 2009 International Conference on Power Electronics and Drive Systems (PEDS).

[13]  T.A. Lipo,et al.  Magnet-flux-nulling control of interior PM Machine drives for improved steady-state response to short-circuit faults , 2006, IEEE Transactions on Industry Applications.

[14]  N. Bianchi,et al.  Fault detection of a five-phase Permanent-Magnet machine , 2008, 2008 34th Annual Conference of IEEE Industrial Electronics.

[15]  Silverio Bolognani,et al.  Impact of Stator Winding of a Five-Phase Permanent-Magnet Motor on Postfault Operations , 2008, IEEE Transactions on Industrial Electronics.

[16]  Jie Yao,et al.  The research of powertrain for supercapacitor-based series hybrid Bus , 2008, 2008 IEEE Vehicle Power and Propulsion Conference.

[17]  R. Nilssen,et al.  Performance comparisons among radial flux, multi-stage axial flux and three-phase transverse flux PM machines for downhole applications , 2009, 2009 IEEE International Electric Machines and Drives Conference.

[18]  J.F. Gieras Performance Characteristics of a Transverse Flux Generator , 2005, IEEE International Conference on Electric Machines and Drives, 2005..

[19]  T.A. Lipo,et al.  A new axial flux surface mounted permanent magnet machine capable of field control , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[20]  Barrie Mecrow,et al.  Operation of fault tolerant machines with winding failures , 1997, 1997 IEEE International Electric Machines and Drives Conference Record.

[21]  Fabrice Locment,et al.  Vectorial Approach-Based Control of a Seven-Phase Axial Flux Machine Designed for Fault Operation , 2008, IEEE Transactions on Industrial Electronics.

[22]  Leila Parsa,et al.  An Optimal Control Technique for Multiphase PM Machines Under Open-Circuit Faults , 2008, IEEE Transactions on Industrial Electronics.

[23]  A. G. Jack,et al.  Reliability analysis of fault tolerant drive topologies , 2008 .

[24]  G. Mason,et al.  A prototype electrical actuator for aircraft flaps and slats , 2005, IEEE International Conference on Electric Machines and Drives, 2005..

[25]  B.C. Mecrow,et al.  Design and testing of a four-phase fault-tolerant permanent-magnet machine for an engine fuel pump , 2004, IEEE Transactions on Energy Conversion.

[26]  Nicola Bianchi,et al.  Innovative remedial strategies for inverter faults in IPM synchronous motor drives , 2002 .

[27]  Thomas A. Lipo,et al.  A novel permanent magnet motor with doubly salient structure , 1992 .

[28]  P. Sangha,et al.  The Analysis of Losses in High-Power Fault-Tolerant Machines for Aerospace Applications , 2006, IEEE Transactions on Industry Applications.

[29]  Barrie Mecrow,et al.  Choice of drive topologies for electrical actuation of aircraft flaps and slats , 2004 .

[30]  J. W. Bennett,et al.  Fault-tolerant control architecture for an electrical actuator , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[31]  Barrie Mecrow,et al.  Fault-tolerant permanent magnet machine drives , 1995 .

[32]  T.A. Lipo,et al.  Multiphase Modular Permanent Magnet Drive System Design and Realization , 2007, 2007 IEEE International Electric Machines & Drives Conference.

[33]  T.A. Lipo,et al.  Short-circuit fault mitigation methods for interior PM synchronous machine drives using six-leg inverters , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[34]  T.A. Lipo,et al.  Fault interrupting methods and topologies for interior PM machine drives , 2004, IEEE Power Electronics Letters.

[35]  Thomas A. Lipo,et al.  Consequent-pole permanent-magnet machine with extended field-weakening capability , 2003 .

[36]  J.A. Ferreira,et al.  Comparative design of radial and transverse flux PM generators for direct-drive wind turbines , 2008, 2008 18th International Conference on Electrical Machines.

[37]  H. Toliyat,et al.  Five-phase permanent-magnet motor drives , 2005, IEEE Transactions on Industry Applications.

[38]  Hongyun Jia,et al.  Comparative Study of Flux-Switching and Doubly-Salient PM Machines Particularly on Torque Capability , 2008, 2008 IEEE Industry Applications Society Annual Meeting.

[39]  S. M. Husband,et al.  The Rolls-Royce transverse flux motor development , 2003, IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03..

[40]  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.

[41]  Barrie Mecrow,et al.  Fault tolerant, variable frequency, unity power factor converters for safety critical PM drives , 2003 .

[42]  N. Bianchi,et al.  Fault– Tolerant PM Motors in Automotive Applications , 2005, 2005 IEEE Vehicle Power and Propulsion Conference.

[43]  Yong Wang,et al.  A novel stator doubly fed doubly salient permanent magnet brushless machine , 2003, Digest of INTERMAG 2003. International Magnetics Conference (Cat. No.03CH37401).

[44]  N. Bianchi,et al.  Post-fault operations of five-phase motor using a full-bridge inverter , 2008, 2008 IEEE Power Electronics Specialists Conference.

[45]  Barrie Mecrow,et al.  Operation of a fault tolerant PM drive for an aerospace fuel pump application , 1997 .

[46]  Hamid A. Toliyat,et al.  Fault-Tolerant Interior-Permanent-Magnet Machines for Hybrid Electric Vehicle Applications , 2007, IEEE Transactions on Vehicular Technology.