Experiment and characteristic analysis of disk type PMLSM with Halbach array

The permanent magnet linear synchronous motors (PMLSM) are proposed for many applications ranging from ground transportation to reciprocating servo system and conveyance system for their simple structure and high performance. Generally, the acceleration and deceleration experiment of PMLSM is very difficult because it has restricted limits of operating. Therefore, this paper proposes disk type PMLSM in order to solve problem stated above. Since the proposed disk type PMLSM has infinite operation limits, it can be solved a problem in acceleration and deceleration experiment of PMLSM. This paper also deals with the analysis of disk type PMLSM considering slot opening and skew effect for a various air-gap length, in terms of air-gap flux density and detent force.