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In electric vehicles with wheel hub drives, fault tolerance of the drives is a desirable feature. This paper reports on design, implementation and tests of a fault tolerant multiphase wheel-hub drive system. Most suitable topologies of motor and converter are selected, and a model-based fault detection is described. In addition, the handling of faults in order to avoid unwanted braking or oscillating...
Actuators for the more electric aircraft are predominantly based on permanent magnet machines to achieve the optimum power to weight ratio. High reliability of these actuators is important and typically this results in the adoption of a dual-lane multiphase topology. This is to provide redundancy in both the power electronics and the machine so as to achieve the desired reliability. However, in fault...
Mechanical and electro-magnetic limitations of high-speed tooth-coil electrical machines having 6 slots and 2 poles are investigated. The paper analyses the performance of a designed high-speed Permanent Magnet Synchronous Generator with Tooth-Coil windings (TC-PMSM) with the topology mentioned. The generator nominal power is designed for 11 kW and nominal rotation speed is set to 31 200 rpm.
This paper presents a detailed comparison of five topologies for rotor permanent magnet (RPM) motors with improved fault-tolerance. The five topologies include one surface-mounted topology, one surface-insert topology and three interior topologies (spoke-type, conventional and V shape). In these motors, the fault-tolerant teeth (FTT) and the concentrated winding are adopted to offer the merit of phase...
In order to increase the fault tolerance of a motor drive, multiphase systems are adopted. Since custom solutions are expensive, machines with dual three-phase windings supplied by two parallel converters seem to be more convenient. In the event of fault, one of the two three-phase windings (the faulty winding) is disconnected and the motor is operated by means of the healthy winding only. A fractional-slot...
Flux-switching permanent magnet (FSPM) brushless machines have emerged as an attractive machine type by virtue of their high torque densities, simple and robust rotor structure and the fact that permanent magnets and coils are both located on the stator. Both 2D and 3D finite element analyses (FEA) are employed to compare the performance of a standard topology with three modular, fault-tolerant designs...
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