Two raft wave energy converters: A combined optimisation of annual energy conversion and stability

Global warming has caused an increasing demand for renewable energy. Currently, 50% of the renewable energy is provided by wind and solar combined. However, these renewable energy sources are highly volatile. Wave energy converters can provide a stable renewable energy source. Previous research has contributed to understanding various combined...

Supplementary control based on current source coupling for improving dynamic characteristics of active distribution network

Supplementary control (SC) technology is widely leveraged by power supply companies in active distribution networks (ADNs) to improve their stability and dynamic characteristics. Yet, the existed SCs are generally implemented from inside the converter controllers of distributed generators (DGs) or active loads, so there is a need to redesign...

Small-Signal Stability Modelling and Analysis of Modular Multilevel Converter and its Closed-Loop Controllers

As the transformation of the electricity generation progresses, the number of power electronic-based devices connected to the electricity grid is expected to grow. To ensure the stability of the power system in a scenario with high penetration of power electronic converters, the dynamics and stability characteristics of these devices have to be...

Het effect van een anisotropiecoëfficiënt in de Poissonvergelijking op de convergentie van de CG-methode en de ICCG(0)-methode

Allerlei diffusieverschijnselen in de natuurkunde kunnen omschreven worden<br/>met de Poissonvergelijking op een gebied met te kiezen randvoorwaarden. Er zijn echter ook verschijnselen waarin er een gelaagdheid optreedt zodat er in verticale<br/>richting minder makkelijk diffusie kan plaatsvinden. Dit leidt tot een vergelijking<br/>met...

A ship egress analysis method using spectral Markov decision processes

A decision-making framework for planning lifecycle ballast water treatment compliance

A ship egress analysis method using spectral Markov decision processes

A decision-making framework for planning lifecycle ballast water treatment compliance

This paper introduces a novel decision-making framework for planning lifecycle compliance of ballast water treatment by applying eigenvalue spectral analysis<br/>to the ship-centric Markov decision process (SC-MDP) framework. This method focuses on identifying the relationships of various decision making scenarios, and how those relationships...

A ship egress analysis method using spectral Markov decision processes

This paper introduces a means of performing a ship egress analysis by applying eigenvalue analysis to the ship-centric Markov decision process (SC-MDP) framework. This method focuses on how people egress, the decisions they make under uncertainty, and the interaction between the individuals and the layout of the vessel. The objective is to...

A fundamental study of the Morphological Acceleration Factor

Long-term prediction of sediment transport and morphology has become increasingly important. One of the key issues in carrying out long-term modeling is to bridge the gap between short-term hydrodynamics varying from hours to days, and morphological changes, taking place over much longer periods. Lesser et al. (2004) and Roelvink (2006) have...