Fault-Tolerant Design Considerations and Control Strategies for Aerospace Drives

Bennett, John W.; Atkinson, Glynn; Mecrow, B.C.; Atkinson, Dave

doi:10.1109/tie.2011.2159356

Cited by 145 publications

(76 citation statements)

References 34 publications

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“…High local SC currents can be suppressed by applying a SC at the machine terminals [3], but due to leakage inductance between different parts of the slot, the current equalisation will not be perfect in real machines. To demonstrate this, Fig.…”

Section: Baseline Lossesmentioning

confidence: 99%

“…Methods to achieve fault tolerance have been researched and proven over the past decades and, for PM machines, typically consist of designing for a 1 p.u. phase inductance and using single layer tooth coil windings to avoid magnetic, electrical of physical coupling between the coils [2,3]. Combined with a suitable modular inverter and control strategy, torque can be produced in the presence of any open-or short-circuit, without catastrophic failure.…”

Section: Introductionmentioning

confidence: 99%

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Short-circuit faults in high-speed PM machines with parallel strands and coils

Geest

Polinder

Ferreira

2014

7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014)

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Electrical machines for safety critical applications need to be able to withstand all possible short-circuits, including those between individual turns. In high-speed machines multiple parallel strands may be used to reduce AC losses in the winding, increasing the likelihood of a turn-level short-circuit. This paper considers the consequences of using parallel strands on the short-circuit losses. Additionally, the effect of using a PWM voltage supply is also considered. It is found that using multiple parallel strands reduces the local losses that occur during a short-circuit, but at the same time slightly increases the total losses. Also, local fault currents can be reduced better with a remedial terminal short-circuit when using parallel strands, suggesting a small safety benefit. The effect of supply voltage harmonics on the maximum short-circuit losses is found to be negligible.

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Section: Baseline Lossesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Short-circuit faults in high-speed PM machines with parallel strands and coils

Geest

Polinder

Ferreira

2014

7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014)

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“…1 and is presented e.g. in [2] and [5] Another way to increase motor availability is to increase the number of 3-phase sets as published in [2] and [6]. A multi 3-phase motor unit system for 2 independent sets of windings is shown in Fig.…”

Section: A Multi -Machine Conceptsmentioning

confidence: 99%

Evaluation of motor-drive segmentation strategies for fault-tolerance

Rottach

Gerada

Wheeler

2013

2013 IEEE ECCE Asia Downunder

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High availability and safety is a major concern for many actuation applications. Fault-tolerant electrical machines and power converters help achieving this goal but component overrating and system complexity have to be minimised for favourable system designs. This paper will assess several segmentation strategies of fault-tolerant permanent magnet machines on the example of an aerospace actuation system and examine the impacts on system weight and complexity.Considerable detail will be presented on the integration of multi 3-phase machine units in a common motor housing alongside with a detailed comparison between axial and circumferential segmentation, which to the knowledge of the authors has not been published before. A helicopter primary flight control actuation application is used to compare segmentation strategies. Initial results suggest that circumferential machine segmentation and a single layer concentrated winding arrangement are most suitable for applications with a high level of required fault tolerance and high peak to rated torque and speed ratio.

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“…Most of these solutions propose to add new components to the system as redundant inverter legs or to increase the number of the phases of the machines, in the interest of adding more Degrees of Freedom (DoF). However, it usually increases the cost and the weight of the system as well [4] [5][11]- [13]. Finally, the cost of the application is always a constraint in any industry.…”

Section: Introductionmentioning

confidence: 99%

Dual-Multiphase Motor Drives for Fault-Tolerant Applications: Power Electronic Structures and Control Strategies

Moraes

Nguyen

Semail

et al. 2018

IEEE Trans. Power Electron.

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Abstract -This paper analyzes two fault-tolerant dualmultiphase motor drives, a series connected topology and a standard H-bridge topology. Previous studies have shown that the series connected topology is appropriate to an aerospace application and has lower peak current in degraded mode in comparison with the H-bridge topology, which may consequently diminish the system's weight and cost. This paper extends the study to compare different control strategies of these structures under two fault conditions: short-circuit of an inverter's switch and an open-phase of the machine. The control strategies analyzed in this paper do not impact the fundamental current or the torque generation, but the amplitudes of some harmonics in degraded mode are expected to be narrowed down in order to reduce the inverter's size. Some analyses of maximum voltage and peak current in degraded mode have been used for inverter dimensioning. Experimental results are shown and compared to the simulated ones to confirm the validity of this study.

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Fault-Tolerant Design Considerations and Control Strategies for Aerospace Drives

Cited by 145 publications

References 34 publications

Short-circuit faults in high-speed PM machines with parallel strands and coils

Short-circuit faults in high-speed PM machines with parallel strands and coils

Evaluation of motor-drive segmentation strategies for fault-tolerance

Dual-Multiphase Motor Drives for Fault-Tolerant Applications: Power Electronic Structures and Control Strategies

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