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This paper proposes the optimal design process to effectively reduce the cogging torque considering the torque and efficiency in constant torque region and constant power region by maximum torque control in spoke type interior permanent magnet synchronous motor (IPMSM). For an increase in torque and efficiency in constant power region, the saliency ratio is increased more than initial model. The two...
The rotor of IPM (Interior Permanent Magnet) brushless motor is characterized with a high-strength structure so that the magnet is protected from centrifugal separation when running at a high speed; also, as designed a non-concentrically circular rotor to increase the motor torque output, there is a reluctance torque produced by the salient poles effect in addition to the electromagnetic torque generated...
This paper is to present the design, development and prototyping of an electrically actuated thruster as a direct drive propulsion system based on a 3-phase permanent magnet brushless machine for an autonomous underwater vehicle. The non-linear design and analysis of the permanent magnet brushless motor are entirely performed in 2-d finite element method. The motor is then coupled directly to a 6-inch...
With the requirement of energy conservation and environmental protection, current induction motor (IM) with gear box for screw pump is unqualified. This paper investigates a special low-speed, high-torque permanent magnet synchronous motor (PMSM) to directly drive the screw pump without gear box. Design constraints are surveyed for the special PMSM, both from the motor's structure and performance...
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