A Study on the Characteristics Analysis According to the Permanent Magnet Segmentation Change to IPMSM for Urban Railway Vehicle

摘要

The following study carried out the characteristic analysis based on the magnet segment of Interior Permanent Magnet Synchronous Motor(IPMSM) for the urban railway vehicles. IPMSM affects the electromagnetic characteristics throughthe change in magnetic flux based on the rotor structure, and significantly influences the structural features through thechange of pressure. Therefore, satisfied by the demanded traction force of the IPMSM, magnet segment derived three differentmodel types. The 1-segment PM model consisted an undivided permanent magnet. The 2-Bridge model consisted a divided permanent magnet with the application of Bridge. The 3-Bridge model consisted additional dividing with one more Bridge applied. The electromagnetic characteristics of the three models were compared and analyzed along with the structural features regarding the scattering of permanent magnet based on strong centrifugal force from the rotation of the rotor at high speed. In conclusion, the final model with electromagnetic characteristics and structural features most suitable of IPMSM for the urban railway vehicles was derived, and the effectiveness was verified through the characteristic experiments after the production of the derived model.