| Abstract |
This paper presents a speed identification method based on the model reference adaptive system (MRAS) of Permanent Magnet Synchronous Motor (PMSM). A stator flux observer based on a new voltage model is designed, using the compensation algorithm for the orthogonality of stator flux and back EMF. This paper designs an improved MRAS model based on this new voltage model and it takes the flux linkage as the state variable in the aß0 coordinate system. A sensorless vector control system for PMSM is constructed. Simulation results of the drive performance in MATLAB/Simulink are presented. Finally, this method has been applied to the high-power application, combined with a three-level inverter. The experiment has been carried out with DSP28335 as the core of the control circuit of the platform. Results indicate the correctness of the theoretical analysis. |
