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This paper studies the magnetic stress and vibration characteristic of the permanent magnet assisted synchronous reluctance machine (PM-SynRM). Firstly, the frequency and spatial orders of radial stress are investigated by analytical equations. Then, two PM-SynRMs are designed, and their open-circuit and armature magnetic stresses are calculated by finite element method (FEM) and compared with the...
Compared with the conventional short-pitched winding switched reluctance machine, the fully-pitched winding machine produces the effective electromagnetic torque by utilizing the changing mutual inductances among the phase windings. Previous works show that the fully-pitched winding machine can offer better circuit utilization, higher ratio of torque and current and higher efficiency. This paper compares...
Conventional short-pitched winding switched reluctance machine realizes the electromechanical energy conversion by utilizing only the rising region of phase inductance at motoring mode, or the descending region of phase inductance at generating mode. Compared with the conventional switched reluctance machine, the fully-pitched winding machine realizes the electromechanical energy conversion by utilizing...
Compared with the conventional short-pitched winding switched reluctance machine, the fully-pitched winding machine can far better utilize the electric circuit. Due to the differences in principles of between motoring operation and generating operation regarding to the fully-pitched winding switched reluctance machine, this paper will propose a novel control strategy of generating operation of a three-phase...
This paper describes a low cost sensorless switched reluctance motor (SRM) driver system based on gradient of phase current. The sensorless control method uses the change of the gradient of the phase current to detect the rotor position where the rotor pole and stator begin to overlap. At this position, phase inductance begins to increase. Voltage control is used in the zone near the position, and...
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