Innovative Solid-State Ferroresonance-Suppressing Circuit for Voltage Transformer Protection in Wind Generation Systems

Ferroresonance, as an undesirable disturbance, leads to significant overvoltage and distorted waveforms. This phenomenon can be highly damaging to voltage transformers and other parallel-connected equipment and can entail catastrophic consequences. This paper aims to design and study a solid-state ferroresonance-suppressing circuit (SSFSC) to...

An overview of structural systems theory

This paper provides an overview of the research conducted in the context of structural (or structured) systems. These are parametrized models used to assess and design system theoretical properties without considering a specific realization of the parameters (which could be uncertain or unknown). The research in structural systems led to a...

Dynamic Modelling of a Solid Oxide Fuel Cell System: Integration of 1-D SOFC Dynamic Model with the Balance of Plant components

The constant pressure on the maritime sector to reduce Greenhouse Gas (GHG) emissions has led the shipping industry to search for alternatives, such as zero-emissions propulsion systems, which would allow meeting the 2050 target imposed by International Maritime Organization (IMO) regulation. Fuel cells have demonstrated to substantially...

Fuel consumption and emissions of ocean-going cargo ship with hybrid propulsion and different fuels over voyage

Hybrid propulsion and using liquefied natural gas (LNG) as the alternative fuel have been applied on automobiles and some small ships, but research investigating the fuel consumption and emissions over the total voyage of ocean-going cargo ships with a hybrid propulsion and different fuels is limited. This paper tries to fill the knowledge...

Selective Synthesis of the Human Drug Metabolite 5′-Hydroxypropranolol by an Evolved Self-Sufficient Peroxygenase

Propranolol is a widely used beta-blocker that is metabolized by human liver P450 monooxygenases into equipotent hydroxylated human drug metabolites (HDMs). It is paramount for the pharmaceutical industry to evaluate the toxicity and activity of these metabolites, but unfortunately, their synthesis has hitherto involved the use of severe...

A Review of Methods to Increase the Availability of Wind Turbine Generator Systems

Availability is an important factor to be considered when designing wind turbine generator systems. The quest for increasing availability is based on the following five design approaches - design for component reliability, active control for reliability, design for fault tolerance, prognostics, and design for maintainability. This paper reviews...

Data-driven architectural design to production and operation

Data-driven architectural production and operation explored within Hyperbody rely heavily on system thinking implying that all parts of a system are to be understood in relation to each other. These relations are established bi-directionally so that data-driven architecture is not only produced (designed and fabricated) by digital means but also...

Data-driven architectural production and operation

Data-driven architectural production and operation as explored within Hyperbody rely heavily on system thinking implying that all parts of a system are to be understood in relation to each other. These relations are increasingly established bi-directionally so that data-driven architecture is not only produced (created or designed and fabricated...

Graphical Smalltalk with My Optimization System for Urban Planning Tasks

Based on the description of a conceptual framework for the representation of planning problems on various scales, we introduce an evolutionary design optimization system. This system is exemplified by means of the generation of street networks with locally defined properties for centrality. We show three different scenarios for planning...

SolarPierce: A Solar Path Based Generative System

In hot and arid climates, limiting solar heat gain while also providing daylight into a structure is a major concern in building design. Building skin that gradually changes in porosity can help limit solar heat gain. Since solar heat gain is primarily a problem during summer, the path the sun follows during summer must be taken into account in...

Addis Building Configurator: Computational design tool for efficient planning of mass housing in Addis Ababa

The paper presents ongoing applied research on the development of a computational design tool addressing planning deficiencies in the city of Addis Ababa, Ethiopia. Because of increasing population pressure and a lack of planning resources, Addis Ababa is clearly in need of new efficient planning solutions. The tool proposed utilizes and...

Design of a control strategy for optimal operation of an autonomous distributed generation system for electricity and heat

The increasing demand for developments in energy efficiency, the emerging distributed generation technologies like CHP units, the strong development of alternative energy sources such as wind energy, the aim to achieve low production costs, and the new environmental regulations that ask for greenhouse emission reductions are just a few of the...

Design of Fault Tolerant Energy conversion System for Increasing Wind Turbine Reliability

Wind energy promises to become an important source of energy in the near future. Penetrating large-scale wind power into power systems presents a lot of challenges to power system operators, generation companies and wind turbine manufactures. In order to design less expensive and more efficient wind turbines, manufacturers have tried a lot of...

Linear generator systems for wave energy conversion