Magnetic Motor Assemblies

Motor is an electromagnetic device which achieves conversion between mechanical energy and electric energy via the magnetic field. The air gap magnetic field for electromechanical energy conversion can be produced by applying the electric current to excitation winding or utilize permanent magnet. Permanent magnet motor refer to those motor which utilize permanent magnetic field to instead excitation windings. Permanent magnet motor generally can be classified into permanent magnet alternating current (PMAC) motor and permanent magnet direct current (PMDC) motor according to current form. PMDC motor and PMAC motor can be further divided to brush/brushless motor and asynchronous/synchronous motor, respectively. Permanent magnet excitation can significantly decrease power consumption and strengthen the running performance of the motor. Almost two-thirds of the rare earth permanent magnet are applied to manufacture various kinds of permanent magnet motors nowadays. Permanent magnet motor is primarily composed of the rotor and stator. The rotor and stator act as the moving and stationary part in the permanent magnet motor, respectively. In addition to various motor magnets especially laminated magnet and radially oriented ring magnet, SDM Magnetics has also collected much experience in magnetic motor assemblies include magnetic rotor assemblies and magnetic stator assemblies.