Research on linear induction motor of stereo garage with low frequency

The stereo garage can adopt linear induction motors (LIMs) as the drive part of translation due to simple construction, low cost and high speed. In lifting platform, several LIMs and electromagnets are respectively installed below and above the crossbeam. With the moving of crossbeam driven by LIMs and the attraction of electromagnets, the cars can be rapidly stored or taken. On the top of stereo garage, the LIMs also can be adopted to drive the lognitudinal moving mechanism in order to realize the movement of lifting platform in longitudinal direction, so the car parking capacity is significantly improved. By analytical equivalent circuit method, the LIM of this application is designed, and the influences of structure parameters are also investigated. Based on FE method, the dynamic performances are calculated and the effectiveness of analytical design is also validated. Finally, the measured results of prototype validate predicted results. Now the designed LIMs are successfully applied in the lifting platform of 8-layers stereo garage.