Complex vector decoupling of IPMSM considering digital delay compensation

The interior permanent magnet synchronous motors are widely used in aircraft actuation system. Due to the limitation of switching frequency, the problem of digital delay will be exacerbated, which will affect the stability of the current loop and reduce system performance. At the same time, as the speed increasing, the intensification of coupling problems will lead to a decrease in the dynamic response ability of the current loop. This article focuses on the problem of digital delay and current coupling. Firstly, an IPMSM complex vector model considering the digital delay is established, and then the system performance is analysed using the zero-pole distribution. Propose a complex vector decoupling strategy considering digital delay and validate the effectiveness of the algorithm through Simulink simulation.