Analysis on a Novel Halbach-type Transverse-flux Linear Oscillatory Motor for Linear Compressor

摘要

Linear oscillatory motors with short stroke represent an excellent alternative in linear compressor applications. A novel halbach-type transverse-flux linear oscillatory motor (HTLOM) with two stators was presented, which has the advantage of without moving iron core, compact structure, light weight, easy-stacked stator and smooth thrust force characteristic. Based on the principle analysis, the static thrust force was calculated by three-dimensional (3-D) finite element analysis (FEA). Then the dynamic simulation was presented for the resonant characteristics of current, displacement, active and reactive power and power factor versus frequency. The analysis result shows that the novel HTLOM with two stators is suitable for linear compressor application, and its maximum efficiency can be achieved at velocity resonance by spring stiffness selection. The conclusions are very significant for the further driving control in industrial usage.