The design of fault tolerant machines for aerospace applications

Atkinson, Glynn; Mecrow, B.C.; Jack, A.G.; Atkinson, Dave; Sangha, P.; Benarous, M.

doi:10.1109/iemdc.2005.195974

Cited by 41 publications

(19 citation statements)

References 10 publications

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“…2, determination of the equivalent PM current , as originally defined in (4), may be simplified to (5) where is the unsaturated inductance of the machine, which is constant. Equation (5) indicates that the equivalent PM current will exhibit the same shape as the PM flux linkage waveform. For example, the machine shown in Fig.…”

Section: Representation Of the Nonlinear Flux Linkage Profilesmentioning

confidence: 99%

“…Single-phase, non-salient pole, PM machines find important domestic applications in water pump machines used in dishwashers and washing machines [1], [2]. For certain special multiple-phase PM machines, like the transverse flux machine used in traction applications, e.g., [3], and fault-tolerant PM machines [4], [5], the magnetic coupling between phases is very weak. Analysis of these kinds of machines may safely be based on the analysis on one phase.…”

Section: Introductionmentioning

confidence: 99%

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Torque Analysis With Saturation Effects for Non-Salient Single-Phase Permanent-Magnet Machines

Ritchie

2011

IEEE Trans. Magn.

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The effects of saturation on torque production for non-salient, single-phase, permanent-magnet machines are studied in this paper. An analytical torque equation is proposed to predict the instantaneous torque with saturation effects. Compared to the existing methods, it is computationally faster and easier to calculate the torque using the analytical equation proposed. It can also handle arbitrary armature current waveforms and arbitrary flux linkage waveforms produced by the rotor permanent magnets. The results obtained by using the proposed torque equation are validated using finite-element results, and experimental results obtained on a prototype single-phase permanent-magnet machine.

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Section: Representation Of the Nonlinear Flux Linkage Profilesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Torque Analysis With Saturation Effects for Non-Salient Single-Phase Permanent-Magnet Machines

Ritchie

2011

IEEE Trans. Magn.

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“…As explained in [1][2][3][4] auxiliary drives, that are critical to flight safety (which is the case here) have to be fault-tolerant drives, which implies that the basic functionality of the respective system still has to be available even after a partial breakdown of either the electrical machine or the power electronics. In the following two different drive topologis are investigated that offer redundancies in case of a partly breakdown of the drive.…”

Section: Appication: Fuel Pump Drive In Aircraftmentioning

confidence: 99%

“…And fuel flow within the engine can be matched precisely to the engine's operating conditions, rather than governed solely by the engine speed. Because integrated electric fuel fuels to main engine and safety is critical, therefore electrical drives with fault tolerant are required [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Comparison of two different fault-tolerant switched reluctance machines for fuel pump drive in aircraft

Chen

Deng

Peng

et al. 2009

2009 IEEE 6th International Power Electronics and Motion Control Conference

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As switched reluctance machines (SRM) generally offer a simple and robust design, they are very suitable for an aircraft main engine fuel pump drive which needs to be actuated by fault-tolerant drives. In this paper two different fault-tolerant SRM topologies for fuel pump drive in aircraft are analytical compared: Firstly a 6/4-topology with two identical motors on one axis as a dual-redundancy drive system, and secondly a dual-channel 12/8-topology, where one 3-phase-system uses every other stator tooth and the second 3-phase-system that provides redundancies uses the rest of the stator teeth. The first of two schemes is turned out to be the better solution concerning ruggedness, weight, inertia, torque quality and magnetic isolation.

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“…Four, five and six phase permanent magnet synchronous machines (PMSMs) have been research hotspots in recent decades [3][4][5][6][7]. The six-phase PMSM is often considered as an excellent candidate for high-performance and high fault-tolerant capability [8,9].…”

Section: Introductionmentioning

confidence: 99%

Harmonic Analysis and Fault-Tolerant Capability of a Semi-12-Phase Permanent-Magnet Synchronous Machine Used for EVs

Zheng

Sui

et al. 2012

Energies

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This paper deals with a fault-tolerant semi-12-phase permanent-magnet synchronous machine (PMSM) used for electric vehicles. High fault-tolerant and low toque ripple features are achieved by employing fractional slot concentrated windings (FSCWs) and open windings. Excessive magnetomotive force (MMF) harmonic components can lead to thermal demagnetization of rotor magnets as well as high core loss. An improved all-teeth-wound winding disposition that changes the winding factor of each harmonic is applied to suppress harmonics. A relatively large slot leakage inductance that limits the short-circuit current (SCC) induced in the short-circuited winding is proposed to deal with short-circuit fault. Fault-tolerant controls up to two phases open circuited are investigated in this paper based on keeping the same torque-producing MMF. The fault-tolerant control strategies corresponding to each faulty mode are studied and compared to ensure high performance operation.

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The design of fault tolerant machines for aerospace applications

Cited by 41 publications

References 10 publications

Torque Analysis With Saturation Effects for Non-Salient Single-Phase Permanent-Magnet Machines

Torque Analysis With Saturation Effects for Non-Salient Single-Phase Permanent-Magnet Machines

Comparison of two different fault-tolerant switched reluctance machines for fuel pump drive in aircraft

Harmonic Analysis and Fault-Tolerant Capability of a Semi-12-Phase Permanent-Magnet Synchronous Machine Used for EVs

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