A novel design of an air-core type Permanent Magnet linear brushless motorby Space Harmonics Field analysis

This paper presents a novel design technique and characteristic analysis of an air core type Permanent Magnet (PM) linear motor based on Space Harmoni cs Field analysis methodology. In the Space Harmonics Field analysis, Poiss on equation is solved by the spatial distribution of current and PM, which is replacedly Equivalent Magnetizing Current (EMC). The process of magnetic field analysis is applied to the motor design and steady state analysis co nsidering the driving characteristic. The validity of the proposed techniqu e is confirmed with 2-D Finite Element (FE) analysis and experimental resul ts.