Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6859725 | International Journal of Electrical Power & Energy Systems | 2015 | 9 Pages |
Abstract
This paper presents a robust control scheme for power electronic interfaces of grid-tied fuel cell power plant. Firstly, a linear matrix inequality (LMI)-based PID controller is designed to control the duty cycle of the boost DC/DC converter, aiming to adjust the output DC voltage to an arbitrary reference value. Afterwards, linear parameter-varying (LPV) technique is utilized for robust control of grid-connected inverter to follow the desired real and reactive power demand of the grid, considering time-varying load and uncertain grid-impedance. Taking uncertainty of the system into account, all admissible variations are considered as a convex polytope. To guarantee a prescribed disturbance attenuation level and improve the transient response of the closed-loop system, Hâ approach is exploited with pole placement consideration in terms of LMIs. Simulation results of the proposed controller compared to those of conventional PI controller, in presence of grid-voltage disturbance, validate high efficiency of the designed control.
Related Topics
Physical Sciences and Engineering
Computer Science
Artificial Intelligence
Authors
Tayebe Erfanmanesh, Maryam Dehghani,