UNINTERRUPT POWER SUPPLY USING MODEL PREDICTIVE CONTROL BASED ON DISTURBANCE OBSERVER AND CONTROLLING METHOD THEREOF

摘要

The present technology discloses an uninterruptible power supply using a model predictive control based on a disturbance observer and a control method thereof. According to a specific example of the present technology, intensive estimated disturbance is derived from the state equation for disturbance reflecting d-axis and q-axis inductor current and capacitor voltage, load current, and uncertainty, and the derived estimated disturbance, d-axis and q-axis inductor current and Based on the capacitor voltage and the reference state input, the tracking state input and tracking error are derived based on the tracking model, and the optimal control input is derived as a solution to the minimization of the cost function of the derived tracking error, the status input, the control input, and the control input of the constant value. Model predictive control with the disturbance observer (MPC-DOB) can be used to minimize estimation disturbances and tracking errors, and to improve the performance of the system as it gradually stabilizes globally against model uncertainty and load fluctuations. .