FPGA-based sensorless control for PMSM drives using the stator/rotor frame extended Kalman filter

摘要

This paper presents an FPGA (field programmable gate arrays) based System-on-Chip sensorless controller for Surface Mounted Permanent Magnet Synchronous Machines (SMPMSM). Position and speed are estimated by the extended Kalman filter (EKF) based on the stator frame model of PMSM. Using parallel signal processing techniques and FPGA algorithm design optimization methods such as pipeline and resource sharing techniques, the whole control system is designed and implemented in a single low cost FPGA chip. Simulation and experimental results show that different frame models have great influence on the stability of sensorless control: a) the FPGA implemented rotating frame EKF observer cannot work properly; b) the FPGA implemented EKF sensorless controller based on stator frame model of PMSM can work well with high performance.