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This paper presents a nonlinear adaptive excitation control scheme to enhance the dynamic stability of multimachine power systems. The proposed controller is designed based on the adaptive backstepping technique where the mechanical power input to the generators and the damping coefficient of each generator are considered as unknown. These unknown quantities are estimated through the adaption laws...
Steam-valving and excitation systems play an important role to maintain the transient stability of power systems with synchronous generators when power systems are subjected to large disturbances and sudden load changes. This paper presents a nonlinear adaptive backstepping approach for controlling excitation and steam-valving systems of synchronous generators. In this paper, the proposed excitation...
In this paper an observer based synchronization for a 4-D Modified Lorenz-Stenflo (MLS) chaotic system is reported. The proposed work uses a scalar coupling signal for synchronization of the 4-D MLS chaotic system in contrary with the conventional diagonal coupling signal. Based on Liapunov's stability theory, an inequality is derived for the synchronization of proposed system. Simulation is used...
This paper proposed a new linear zero dynamic controller (LZDC) for three-phase grid-connected photovoltaic (PV) systems. To implement the controller, the PV is modeled in dq frame which is obtained from park transformation. In order to analyse the stability, the PV system is linearised about an operating point by using Taylor series expansion method. Here the relative degree is investigated through...
In this paper, the modeling of the distribution network is done in a different way where the distributed generator and dynamic loads are considered. Based on this modeling, this paper presents an analysis to investigate the dynamic and static load variation effect on the distribution network. Graphical interface industry software is used to conduct all the aspects of model implementation and carry...
In an SRAM array, the systematic inter-die and the random within-die variations in process parameters cause significant number of parametric failures, to degrade process yield in the nanometer technology regime. In this paper, we investigate the interaction between the inter-die and intra-die Vt variations on SRAM read and write failures. To improve robustness of SRAM cell, we propose a closed-loop...
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