|제목(국문)||육각형 입력제약 공간을 이용한 무정전 전원장치의 모델예측제어|
|제목(영문)||Model Predictive Control of Three-Phase Inverter for Uninterruptible Power Supply Applications under a Hexagonal Input Constraint Region|
Using the classical cascade voltage control strategy, this paper proposes an analytical solution to an MPC (Model Predictive Control) problem with a hexagonal input constraint set for the inner-loop to regulate the output voltage of the UPS (Uninterruptible Power Supply). Focus is placed on how to deal with the hexagonal input constraint set without any approximation. Following the conventional cascade voltage control strategy, the PI (Proportional-Integral) controller is used in the outer-loop in order to regulate the output voltage. The simulation results illustrate that the capacitor voltage rapidly goes to its reference in a satisfactoiy manner while keeping other state variables bounded under an unexpected load changes.
|keyword||UPS, three-phase inverter, hexagonal input constraints, MPC|