CUI Tingrui1, ZONG Liming1, LI Xi1, SONG Wenfang2

 

(1. Beijing Subway Operation Technology Center, Beijing 102208, China; 

2. Harbin Taifu Electric Co., Ltd., Harbin 150060, China)

 

 

Abstract: Aiming at solving the maintenance problems, such as high cost, slow service, difficulties to buy spare parts, of imported vehicles for Beijing Subway Airport Line, the domestic research of subway vehicles with forced aircooled and highpower linear motor was investigated. Theoretically, a modified Ttype equivalent circuit of linear induction motor for subway vehicle was derived. Then a novel program algorithm for electromagnetic characteristics design was proposed with finite element analysis method. On this basis, applying modern motor designing technology, the electromagnetic parameters and mechanical structure parameters for highpower linear motors were optimized by means of electromagnetic and circuit calculation. The simulation and experimental results show that the linear induction motor independent localization researched has excellent acceleration and deceleration performance, and that the strength characteristics and electrical characteristics meet the design requirements. The feasibility of the proposed control scheme is verified. The vehicle installed the linear motor developed can be running reliably and stably in various conditions.

 

Key words: linear induction motor(LIM); electromagnetic calculation; optimization design; urban rail transit