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This paper presents the results from a numerical study of the force characteristics of a DC solenoid actuator with three different shapes of the poles: a truncated cone, a cylindrical stepped shape and a flat shape. 3D computer models have been synthesized for the purpose in the software product ANSYS Maxwell, with the help of which the force characteristics at different supply voltages have been...
Claw-pole motor has naturally 3D structure, because of the structural complexity. However, it was simplified as a 2D model by linear approximation. The rotor model of PM-assisted claw-pole motor has permanent magnets, as well as a field winding. Then an electric equivalent circuit is developed with a current source and a voltage source. Further, the rotor core saturation problem is treated with a...
Air-gap eccentricity is a fault that mainly affects large induction motors. In the worst case an eccentricity fault can result in a stator rotor rub thereby causing severe damage to the motor. As a result eccentricity fault detection has gained considerable significance. Of all detection schemes for this fault, Motor Current Signature Analysis (MCSA) is the most widely used technique. This scheme...
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