Hardware-in-loop simulation of linear synchronous motor based on three-level converter

With the development of high power devices, Hardware in loop simulation is widely applied to power electronics to test the performance of control system. This paper describes a simulation method on basis of RT-LAB platform to test the controller of long-stator linear synchronous motor(LLSM). Three-level converter model and the dynamic mathematical model of LLSM are built in MATLAB/Simulink, after compiling, they can be downloaded and executed on target node. Utilizing the peripheral port such as analog I/O, digital I/O, RT-LAB can realize interaction with the actual controller. A sensorless control method based on extended electromotive force is mentioned in this paper, the whole algorithm is developed in IOWorks environment, The experimental results verify the performance of the controller.