We employ a canonical variational framework for the predictive characterization of structural instabilities that develop during diffusion-driven transient swelling hydrogels under geometrical constraints. The formulation finite elasticity coupled with Fickian diffusion has two-field minimization structure, wherein deformation map and fluid-volume flux are obtained as minimizers time-discrete po...

This paper incorporates Corrected Transient Energy Margin (CTEM) to the clearing of coupled energy and reactive power market in the form of multi objective framework which includes two objective functions. The first one is the minimization of offer cost of generators for their active power generation in energy market plus Total Payment Function (TPF) of generators for reactive power compensatio...

1 This work was done in part while the author was with Ceyba Inc. Abstract: This paper presents control applications to power control in optical communication networks. We consider transient power control across optical communication links, and spectral power control at composite optical amplifier sites. A decentralized network control strategy is proposed that ensures robust handling of dynami...

We present a new algorithm for combining a fully anisotropic goal-oriented mesh adaptation with the transient fixed point method for unsteady problems. The minimization of the error on a functional provides both the density and the anisotropy (stretching) of the optimal mesh. This method is used for specifying the mesh for a time subinterval from the state and the adjoint. The global transient ...

This paper addresses the problem of `quickest possible' online transient stability assessment, by minimizing decision time combined event detection that might lead to a system split and unstable generator group prediction, from real-time wide area power measurements. More importantly it does so respecting predefined probabilistic error constraints for prediction. The statistical theory optimal ...

This paper presents an application of evolution programming (EP), which has no limitation on objective function, for transient stability constrained optimal power flow (TSCOPF) problem. Swing equation and limit of rotor angle deviation with respect to centre of inertia (COI) are treated as additional constraints in transient stability concern. The generator fuel cost minimization is selected as...

While adaptive control has been used in numerous applications to achieve given system stabilization or command following criteria, the ability to obtain a predictable transient performance is a challenging problem when there is no a priori knowledge about system uncertainties (e.g., their upper bounds and/or domains). In order to address this problem, a new method is presented in [1, 2] utilizi...

This paper introduces a control strategy to simultaneously achieve asymptotic stabilization and transient frequency regulation of power networks. The command is generated by iteratively solving an open-loop cost minimization problem with stability constraints. To deal the non-convexity constraint, we propose convexification that uses reference trajectory based on system’s current state. We also...

background and objectives: hospitals usually generate large amounts of hazardous waste. if not managed properly, hospital waste can pose threats to public safety and damage the environment. waste minimization is a waste management approach that focuses on reducing the amount and toxicity of hazardous wastes. this study pursues a two-fold purpose: 1) to gain insight into hospital waste minimizat...

The objective of this paper is to apply the Hybrid Efficiency Loss Minimization control scheme [1] into a FOC controlled ACIM motor drive in order to improve the fast on-line loss minimization control through flux control,. The proposed controller combines a Loss Model Controller (LMC) to control the transient states and a Fuzzy Logic Search Control system (FLSC) to control steady states. The L...