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An optimal design of internal Ferrite permanent magnet motor with embedded key FEM verification is presented with the scope to increase the efficiency of the small power motors without to use the expensive, rare earth permanent magnets. Two internal flux concentration topologies are analyzed and the geometric dimensions and performances are presented for three cases, all at 1kW rated power at 4500rpm...
More-Electric flight is one of the main objectives of the aerospace industry for the future. For aerospace applications, electrical machines providing high torque density are paramount for the viability of direct-drive electrical propulsion of aircraft. Besides low-weight and high torque capability, a candidate solution should also be inherently fault tolerant for it to be used in aerospace. For these...
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.
In this paper, different axial gap permanent magnet generators are designed and compared for one of the Caterpillar truck applications. Various axial gap designs with multiple stators and rotors are carried out and compared with a conventional PM generator in terms of torque density, efficiency, loss, heat dissipation, volume, inertia and weight. The results reveal the advantages of axial gap generators...
Hybrid excited machines are of interest due to the potential of combining the high power density of PM machines with the flux-adjusting capability of wound field excitation. This paper reviews currently documented hybrid excited machines and compares the flux control performance and torque density of alternative hybrid flux-switching PM machines by means of finite element analysis. The iron loss of...
This work deals with the analysis of the high-harmonic contents on the PM flux-linkage and induced back-emf of a PM machine at no-load and with delta connected winding topology. The skewing effect on these unwanted high-harmonics is investigated for a continuously skewed and a discrete skewed rotor topology. The FE results show that the PM flux-linkage of the studied machine contains high harmonics...
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