On The Design of Oscillating Linear Single Phase Permanent Magnet Motors

This paper reports on the design of a linear single phase permanent magnet oscillating motor aimed at application in a domestic refrigerator. An initial prototype has been designed and tested which has allowed the validation of the design techniques used. From this basis the effect of the various design parameters has been investigated. This investigation helps in optimising the cost and efficiency of the design. It is found in this paper that the mover SMC parts can be shaped to reduce their weight. Also the paper shows the influence of the length of the stator teeth on the stroke. Moreover, the simulations show that mover legs can be reduced in length significantly without affecting the force. Furthermore, it is found that changing length between magnets affects the stroke. Also, the paper investigates the effect of changing the length of the stator slot opening on inductance. Finally, the mover thickness effect and the distance between the axis of symmetry and the middle of air gap are investigated in this paper