Alternative resonant controller design for Uninterruptible Power Supplies (UPS)
The main objective of this paper is to present an alternative procedure to design resonant controllers for Uninterruptible Power Supplies (UPS). With this aim, a set of equations to determine controller gains is proposed based on the desired output response and the parameters of a class of UPS systems. First, the desired closed-loop poles are determined considering the Linear Matrix Inequalities (LMI) framework. Based on the characteristic polynomial representing the desired closed-loop performance and the plant parameters, algebraic conditions are derived to determine the controller gains for a range of UPS parameters and loads. Simulation and experimental results illustrate the effectiveness of the proposed methodology.