Current loop analysis of magnetic suspension controller for magnetic suspension bearing

Current loop is an important part of the magnetic suspension controller. The main analysis is P and PI type current loop. Theoretical analysis and simulation show that, proportional control is able to make the control voltage quickly be tracked by current, while the proportional integral control can further speed up the tracking speed, and at the same time, the noise can be limited to the allowable range. Experiment shows that PI control is more suitable for magnetic levitation control system.