P So here at the bottom, at this point P, there is a loop.
在底部,点,有一个环。
2
This paper presents a new method that PIR-P dual loop control based on rotating coordinates to improve the output voltage symmetry of inverter under the serious unbalanced load condition.
P and D gain of closed loop transfer function plus some " zero " , it increases bandwidth tracking the trajectory, without contributing to its external interference.