TY - JOUR
T1 - Multi Observer-Based Sliding Mode Load Frequency Control With Input Delay Estimation
AU - Dev, Ark
AU - Novella Rodriguez, David Fernando
AU - Anand, Sumant
AU - Sarkar, Mrinal Kanti
PY - 2021/3/16
Y1 - 2021/3/16
N2 - The letter proposes frequency stability in power systems with input delay. A closed loop system can be oscillatory or even unstable without the exact knowledge of delay. Therefore, it is desirable to design a control scheme which is based on the estimation of unknown delay. The proposed design consists of an infinite dimensional observer with an adaptive time delay estimation and a sliding mode controller (SMC). The merit of the proposed concept lies in the fact that the unknown delay is valued by just estimating the smallest delay segment. The controller input is obtained from a set of sequential observers that predicts the system states and ensures asymptotic stability of the closed loop system with input delay estimation. The existence of sliding mode and the closed loop system stability is proved thanks to the Lyapunov and Lyapunov–Krasovskii candidate functionals, respectively. Simulation results confirm the effectiveness of the proposed design.
AB - The letter proposes frequency stability in power systems with input delay. A closed loop system can be oscillatory or even unstable without the exact knowledge of delay. Therefore, it is desirable to design a control scheme which is based on the estimation of unknown delay. The proposed design consists of an infinite dimensional observer with an adaptive time delay estimation and a sliding mode controller (SMC). The merit of the proposed concept lies in the fact that the unknown delay is valued by just estimating the smallest delay segment. The controller input is obtained from a set of sequential observers that predicts the system states and ensures asymptotic stability of the closed loop system with input delay estimation. The existence of sliding mode and the closed loop system stability is proved thanks to the Lyapunov and Lyapunov–Krasovskii candidate functionals, respectively. Simulation results confirm the effectiveness of the proposed design.
UR - http://dx.doi.org/10.1115/1.4050251
U2 - 10.1115/1.4050251
DO - 10.1115/1.4050251
M3 - Article
SN - 2689-6117
VL - 1
JO - ASME Letters in Dynamic Systems and Control
JF - ASME Letters in Dynamic Systems and Control
IS - 4
ER -