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This paper proposes a design procedure in addition to some optimal design guidelines for line start permanent magnet (LSPM) motors, independent from their ratings. Major transient and steady-state characteristics of LSPM motors, including magnet braking torque, synchronizing torque, efficiency, and power factor, are analyzed with respect to the main motor design parameters, i.e., motor back electromotive...
The paper proposes a study of synchronization capability of line-start permanent magnet synchronous motor with small saliency ratio and very high cage resistance. The exemplified method is for a motor with the rated power of 3.5 kW, the synchronous speed of 3000 rpm, and the saliency ratio of 1.08.
A novel wide air-gap permanent magnet(PM) motor for low-noise water-pump is designed, whose rotor magnetic pole adopts Halbach array. Based on the character of this motor, finite-element method(FEM) is introduced to analyze its electromagnetic field distribution, and its air-gap induction, as well as its no-load back-EMF is calculated, considering skewed slot stator and the relative motion between...
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