Superconducting Maglev Linear Motor Controls And Eddy Current Brake System

The transportation is the base of the national economy. With the development of society and economy, we need much better transportation system. The Maglev Vehicle must be the best way for the passenger transport in 21^st century, because it is faster, safer and working better in protecting environment and saving energy. As the Shanghai business line went into working and the plan of the line between Shanghai and Hangzhou got passed, it is becoming an increasing demand to localize the maglev technology.Based on the experimental superconductive maglev vehicle line between Zhejiang University and Southwest Jiaotong University, the main content of this dissertation is as follows:1. The analysis and design of linear induction motor. The dissertation analyzes the structure and parameters, then designs the linear motor using circuit method.2. The control system of the experimental line. Improved electrical method is applied.3. The analysis and design of eddy current system. After introducing the principle of permanent magnet eddy-current brake, the dissertation analyses the model using FEM software ANSYS and gets the distribution of magnetic field and the braking force, then optimizes the parameters to achieve the best braking performance. At last, Halbach array is considered to be the best one among three different structures.