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Permanent magnet motors consist of two main types. Surface permanent magnet motors (SPM) and internal permanent magnet (IPM) motors. The main difference is that SPM motors place the magnets on the outside of the rotor while IPM motors place their magnets inside the motor. Benefits to internal magnets include structural integrity and reducing ...
A permanent magnet synchronous generator is a generator where the excitation field is provided by a permanent magnet instead of a coil. The term synchronous refers here to the fact that the rotor and magnetic field rotate with the same speed, because the magnetic field is generated through a shaft-mounted permanent magnet mechanism, and current is induced into the stationary armature.
An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by a pulse of electric current in a wire winding around part of the magnet. The magnet consists of two sections, one of "hard" (high coercivity) magnetic material and one of "soft" (low coercivity) material. The ...
Jacek F. Gieras; Mitchell Wing (2002), Permanent magnet motor technology: design and applications, CRC Press, ISBN 9780824743949; Krishnan Ramu (2009), Permanent Magnet Synchronous and Brushless DC Motors, CRC Press, ISBN 9781420014235; Howard E. Jordan (1994), Energy-efficient electric motors and their applications, Springer, ISBN 9780306446986
The 2024 Heisman Trophy presentation is less than two weeks away and will feature the top college football players who have demonstrated exceptional skill, leadership and performance on the field ...
These are the best cities for international workers, according to a new quality-of-life ranking. Here's why this European locale tops the list.
Caitlin Clark had a strong response to Megyn Kelly's criticism about her recent comments regarding white privilege in the WNBA. A day later, Clark spoke at the “A Year in Time” event in New ...
[4] [5] A popular example of a magnet motor, although without rotating axis, was put forward by John Wilkins in 1670: A ramp with a magnet at the top, which pulled a metal ball up the ramp. Near the magnet was a small hole that was supposed to allow the ball to drop under the ramp and return to the bottom, where a flap allowed it to return to ...