| Title |
Design of a Fixed-Structure H_∞ Power System Stabilizer |
| Authors |
김석주(Kim Seog-Joo) ; 이종무(Lee Jong-Moo) ; 권순만(Kwon Soonman) ; 문영현(Moon Young-Hyun) |
| Keywords |
Power System Stabilizer (PSS) ; Linear Matrix Inequality (LMI) ; Penalty Method ; Rank Condition |
| Abstract |
This paper deals with the design of a fixed-structure H_∞ power system stabilizer (PSS) by using an iterative linear matrix inequality (LMI) method. The fixed-structure H_∞ controller is represented in terms of LMIs with a rank condition. To solve the non-convex rank-constrained LMI problem, a linear penalty function is incorporated into the objective function so that minimizing the penalized objective function subject to LMIs amounts to a convex optimization problem. With an increasing sequence of the penalty parameter, the solution of the penalized optimization problem moves towards the feasible region of the original non-convex problem. The proposed algorithm is, therefore, convergent. Numerical experiments show the practical applicability of the proposed algorithm. |