Research on discrete deviation decoupling control for permanent magnet synchronous motor

摘要

The magnetization current component and torque current component can not be decoupled completely in rotor field-orientation vector control. In order to overcome this shortcoming, based on series decoupling theory, a deviation decoupling method is proposed. Under the above method, a discrete deviation decoupling controller is designed. The mathematical calculations process of discrete decoupling controller, which is designed in above method, is given. The feedback decoupling control and the proposed deviation decoupling control were contrastive analyzed by simulation. Simulation results show that the algorithm is robust against parameter changes, and has a good decoupling ability.