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This paper proposes an axial-field flux-modulated magnetic gear (AF-FMMG), in which the rotations with different speeds of the inner rotor and the outer rotor can be achieved based on the modulation function of two stationary modulation rings. Due to the axial-flux configuration, the proposed AF-FMMG offers the advantages of a simpler mechanical structure and a theoretically limitless gap length between...
Linear flux-switching permanent magnet (LFSPM) motor attracts widely attention due to its high power density and high efficiency, in which both concentrated windings and PMs are on the short primary mover. Hence, it is very suitable for long stator applications such as urban rail transportations. However, a large numbers of existing LFSPM motors are obtained from simply splitting and unrolling the...
Flux-switching permanent magnet (FSPM) machine is a novel double salient structure PM machine with both concentrated armature windings and magnets in the stator, which attracts much attentions due to its high torque density and fault tolerance. However, the back-EMF of traditional FSPM is not perfectly sinusoidal, due to the influence of harmonics, which causes the torque ripple. Hence, in this paper,...
In the paper, an innovated AC-DC 3 degrees of freedom active magnetic bearing (AC-DC-3DOF-AMB) is proposed, which is driven by a DC amplifier in axial direction and a 3-phase power converter in radial directions, respectively. The principle of producing magnetic suspension forces for the AC-DC-3DOF-AMB is introduced. The flux path of the AC-DC-3DOF-AMB is calculated by using equivalent magnetic circuit...
A dynamic decoupling control approach based on neural network inverse system theory is developed for the AC-DC 3 degrees of freedom hybrid magnetic bearing (AC-DC 3-DOF HMB), which is a multivariable, nonlinear, strong coupled system. The configuration of AC-DC 3-DOF HMB is introduced briefly. The mathematics equations of radial and axial suspension forces are deduced. The analytical inverse system...
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