Design and simulation of cylindrical linear induction motor mechanism based on finite element analyze

According to the requirements on operating mechanism of movement characteristics during the opening and closing of 40.5 kV vacuum circuit breaker, a new type of motor drive operating mechanism-cylinder linear induction motor (C-LIM) mechanism was designed in this paper. And magnetic field and some characteristics of (C-LIM) was analyzed using finite element method, and (C-LIM) design validity is proved. Based on higher requisition of the characteristics of breaker operating mechanism when operating and closing the motor mechanism movement characteristics was built and load model of system is analyzed, and the optimized velocity curve of the contacting also planned in the paper. Pointing at ending effect of C-LIM mathematical model of vector control system is built when consider dynamic vertical ending effect, and simulated of the mechanism control system for driven by (C-LIM) in MATLAB environment. C-LIM model is successful in putting it through a test on circuit breaker rated 40.5kV and satisfy requirements. The results show that it can get a good dynamic performance, small vibration and perfectly meet the requirements of mechanism movement characteristics during the opening and closing of circuit breaker when the linear motor direct drive circuit breaker actuator operating shaft, and still lay the foundations of circuit breaker intelligence control.