Optimal selection of PI parameters of FOC for PMSM using structured H∞-synthesis

In this paper, we propose a straightforward method to select the parameters of the PI controllers in Field Oriented Control (FOC) scheme for Permanent Magnet Synchronous Motor (PMSM) based on geometric model reduction and structured H
_∞
-synthesis. The main contribution of this paper is that, by recognizing the essential linear system structure of PMSM model and using mature robust control method, the six parameters for PI controllers in FOC can be computed offline without resorting to trial and error online manual tuning. In addition, we also simulate the rotor speed tracking example to demonstrate the validity of the proposed parameter selection method.