Arabian Journal for Science and Engineering

, Volume 38, Issue 10, pp 2755–2764 | Cite as

Theory of Permanent Magnetic Motion and Variable Field Permanent Magnetic Motor

  • A. RashidEmail author
  • Kamran Yousaf
  • Zeeshan Ali
Research Article - Electrical Engineering


Theory of permanent magnetic motion is presented in this research paper. This paper describes how magnetic energy can be converted into mechanical energy without the application of any external energy source. To justify this theory, mathematical and experimental proofs are mentioned in this research paper. This theory is applicable only when the magnetic field of stator of linear permanent magnetic motor is increasing continuously and is extended to infinite distance. In circular motion, if radius of stator is limited, rotor gets locked because increasing magnetic field is extended to finite distance after which it repeats itself. At a point in a circular motion, where increasing magnetic field ends, is named as lock-point because rotor gets locked at that point. Rotor locks once in each cycle. An arrangement is worked out to overcome this lock-point by using two-media concept. Two-media concept states that by using two-media of different magnetic field permeability, opposition force at lock-point can be reduced, thus rotor does not get locked at lock-point but goes through it due to inertia. After crossing the lock-point, as magnetic field repeats itself, rotor accelerates. Equations are derived for net force acting between rotor and stator, work done and power transmitted.


Magnetic motion Permanent magnet motor 


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Copyright information

© King Fahd University of Petroleum and Minerals 2012

Authors and Affiliations

  1. 1.Electrical Engineering DepartmentCOMSATS University of Science and TechnologyAbbottabadPakistan

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