LPV Modeling of Buck Converter and Gain Scheduling Control
A kind of gain scheduling control is designed for Buck converter. The small signal model of the Buck converter is translated into the Linear Parameter-Varying (LPV) dynamic equation with the load and the line voltage as the scheduled parameters. Based on it, the closed-loop system poles assignment is taken to the specific area with gain scheduled state feedback via linear matrix inequalities (LMIs) technique, the gain scheduled state feedback is designed to regulate the duty cycle of the switch conduction. Compared with robust state feedback control, it has better disturbance rejection performance.
G. X. Lin and W. Xie, "LPV Modeling of Buck Converter and Gain Scheduling Control", Advanced Materials Research, Vols. 317-319, pp. 1390-1393, 2011