< Back Permanent Magnet Motor Conventional electric
motors use magnetic forces to produce either rotative or linear motion. Electric motors operate on the principle that when a conductor is located in a magnetic field which carries current a magnetic force is exerted
upon it. In a conventional electric motor the magnetic fields created by electromagnetics may employ attraction, repulsion, or both types of magnetic forces, to impose a force upon the armature to cause rotation.
Conventional electric motors may employ permanent magnets, but the use of permanent magnets require the creation of an electromagnetic field to act upon the field produced by the permanent magnets, and switching means
are used to control the energization of the electromagnets and the orientation of the magnetic fields, to produce the motive power. Previously, a permanent magnet motor has not been used because it was not possible to
modify the electron flow to accomplish the switching of the magnetic field. Switching functions are common in a conventional electric motor where electrical current is employed to align the iron pole pieces and
concentrate the magnetic field at the proper places to give the thrust necessary to move the motor. In a conventional electric motor, switching is accomplished by the use of brushes, commutators, alternating current, or
other means. In order to accomplish the switching function in a permanent magnet motor, it is necessary to shield the magnetic leakage so that it will not appear at the wrong places. The best way to
accomplish this is to use the magnetic flux and concentrate it where it will be the most effective. Timing and switching can be achieved in a permanent magnet motor by concentrating the flux and using the proper
geometry to make most effective use of the magnetic fields. By the proper combination of materials, geometry and magnetic concentration, it is possible to achieve a mechanical advantage of high ratio, greater than 100
to 1, capable of producing a continuous motive force. By utilizing ferro magnetic and other materials as a source of power, producing motors without any electron flow, as in normal motors is possible. The magnetic flux
created by the magnets is controlled and concentrated to control the speed of the motor to do useful work. The timing and orientation of magnetic forces produced by permanent magnets to produce a motor is
accomplished with the proper geometrical relationship of these components. Plans only.
PMM730.....................$7.00
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