George Aggidis
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View article: Mitigating Intermittency in Offshore Wind Power Using Adaptive Nonlinear MPPT Control Techniques
Mitigating Intermittency in Offshore Wind Power Using Adaptive Nonlinear MPPT Control Techniques Open
This paper addresses the challenge of maximizing power extraction in offshore wind energy systems through the development of an enhanced maximum power point tracking (MPPT) control strategy. Offshore wind energy is inherently intermittent,…
View article: A techno-economic assessment of power-to-gas to produce hydrogen by TALOS
A techno-economic assessment of power-to-gas to produce hydrogen by TALOS Open
The transition toward a low-carbon energy system encourages academicians to research innovative energy solutions. Diversifying renewable energy sources ensures the effort to fulfil market demand comes into being. This study presents a comp…
View article: The Impact of Wave Prediction Uncertainty on the Control of a Multi-Axis Wave Energy Converter
The Impact of Wave Prediction Uncertainty on the Control of a Multi-Axis Wave Energy Converter Open
As global energy demands and climate concerns continue to grow, the need for renewable energy is becoming increasingly clear and wave energy converter (WEC) systems are receiving growing interest. WECs often utilize optimal control techniq…
View article: Economic Methods for the Selection of Renewable Energy Sources: A Case Study
Economic Methods for the Selection of Renewable Energy Sources: A Case Study Open
Governments need to evaluate technologies generating electricity from different sources; levelised cost of energy (LCOE) is a widely used metric. However, LCOE is weak at comparing disparate technologies, especially where they have differe…
View article: Real Option Valuation of an Emerging Renewable Technology Design in Wave Energy Conversion
Real Option Valuation of an Emerging Renewable Technology Design in Wave Energy Conversion Open
The untapped potential of wave energy offers another alternative to diversifying renewable energy sources and addressing climate change by reducing CO2 emissions. However, development costs to mature the technology remain significant hurdl…
View article: Innovations in Wave Energy: A Case Study of TALOS-WEC’s Multi-Axis Technology
Innovations in Wave Energy: A Case Study of TALOS-WEC’s Multi-Axis Technology Open
The technologically advanced learning ocean system—wave energy converter (TALOS-WEC) project addresses the urgent need for sustainable and efficient energy solutions by leveraging the vast potential of wave energy. This project presents a …
View article: An Experimental Study of a Conventional Cylindrical Oscillating Water Column Wave Energy Converter: Fixed and Floating Devices
An Experimental Study of a Conventional Cylindrical Oscillating Water Column Wave Energy Converter: Fixed and Floating Devices Open
Oscillating water column (OWC) wave energy converters (WECs) are very popular types of wave energy converters due to their practical implementations, their versatility in deployment in different marine environments, and their high reliabil…
View article: A Modular Step-Up DC–DC Converter Based on Dual-Isolated SEPIC/Cuk for Electric Vehicle Applications
A Modular Step-Up DC–DC Converter Based on Dual-Isolated SEPIC/Cuk for Electric Vehicle Applications Open
Fuel cells (FCs) offer several operational advantages when integrated as a power source in electric vehicles (EVs). Since the voltage of these cells is typically low, usually less than 1 V, the power conversion system requires a DC–DC conv…
View article: Tidal Range Barrage Design and Construction
Tidal Range Barrage Design and Construction Open
The west coast of Great Britain has the potential for barrages to create tidal range reservoirs that both facilitate electricity generation and prevent flooding from sea level rise. Seawater flows into and out of the reservoir, or impoundm…
View article: Deep reinforcement learning challenges and opportunities for urban water systems
Deep reinforcement learning challenges and opportunities for urban water systems Open
The efficient and sustainable supply and transport of water is a key component to any functioning civilisation making the role of urban water systems (UWS) inherently crucial to the wellbeing of its customers. However, managing water is no…
View article: Development of a Novel High Head Impulse Hydro Turbine
Development of a Novel High Head Impulse Hydro Turbine Open
The Pelton turbine has been widely regarded as the most efficient hydro turbine for high-head applications. However, the Pelton turbine buckets, especially the area commonly referred to as the ‘splitter’, are highly susceptible to erosion,…
View article: Tidal range electricity generation into the twenty-second century
Tidal range electricity generation into the twenty-second century Open
Tidal range electricity generation schemes are designed to have a minimum operational life of at least 120 years, making it important to plan for changes such as sea-level rise (SLR). Earlier studies have shown that schemes can maintain th…
View article: Methodology for the Optimization of a Novel Hydro Turbine with a Case Study
Methodology for the Optimization of a Novel Hydro Turbine with a Case Study Open
As the world strives towards its goal of net zero carbon emissions, it is vital that renewable energy sources be optimized to their full potential. A key source of renewable energy is hydropower, more specifically, the Pelton turbine—a hig…
View article: Modelling of Amino Acid Fermentations and Stabilization of Anaerobic Digestates by Extracting Ammonium Bicarbonate
Modelling of Amino Acid Fermentations and Stabilization of Anaerobic Digestates by Extracting Ammonium Bicarbonate Open
With the current increase in demand for animal and agricultural products, management of agrowaste has become critical to avoid greenhouse gas emissions. The present article investigates the applicability of ammonium bicarbonate synthesis v…
View article: A Review of the Levelized Cost of Wave Energy Based on a Techno-Economic Model
A Review of the Levelized Cost of Wave Energy Based on a Techno-Economic Model Open
Wave energy provides a renewable and clear power for the future energy mix and fights against climate change. Currently, there are many different wave energy converters, but their costs of extracting wave energy are still much higher than …
View article: A Review of Power Co-Generation Technologies from Hybrid Offshore Wind and Wave Energy
A Review of Power Co-Generation Technologies from Hybrid Offshore Wind and Wave Energy Open
Renewable energy resources such as offshore wind and wave energy are environmentally friendly and omnipresent. A hybrid offshore wind-wave energy system produces a more sustainable form of energy that is not only eco-friendly but also econ…
View article: Review of leakage detection in water distribution networks
Review of leakage detection in water distribution networks Open
The conservation of water is, justifiably, a huge concern to water companies, regulatory bodies, environmentalist and more but, unfortunately, water loss through leakage can remain undetected for long periods of time without effective leak…
View article: The Impact of Model Predictive Control Structures and Constraints on a Wave Energy Converter with Hydraulic Power Take Off System
The Impact of Model Predictive Control Structures and Constraints on a Wave Energy Converter with Hydraulic Power Take Off System Open
View article: Development of the Numerical Model for Uv Led Water Treatment Plant
Development of the Numerical Model for Uv Led Water Treatment Plant Open
View article: A Review on Power Electronic Topologies and Control for Wave Energy Converters
A Review on Power Electronic Topologies and Control for Wave Energy Converters Open
Ocean energy systems (OESs) convert the kinetic, potential, and thermal energy from oceans and seas to electricity. These systems are broadly classified into tidal, wave, thermal, and current marine systems. If fully utilized, the OESs can…
View article: A model of the costs for tidal range power generation schemes
A model of the costs for tidal range power generation schemes Open
Tidal range power is gaining recognition as a globally important power source, replacing unsustainable fossil fuels and helping mitigate the climate change emergency. Great Britain is ideally situated to exploit tidal power but currently h…
View article: Tidal range electricity generation: A comparison between estuarine barrages and coastal lagoons
Tidal range electricity generation: A comparison between estuarine barrages and coastal lagoons Open
The potential power from coastal tidal range is becoming better appreciated due to the need to mitigate global warming. Great Britain (GB) is ideally situated to exploit tidal power but currently has no operational systems. Historically, e…
View article: Dataset on the solid-liquid separation of anaerobic digestate by means of wood ash-based treatment
Dataset on the solid-liquid separation of anaerobic digestate by means of wood ash-based treatment Open
View article: Time-Domain Implementation and Analyses of Multi-Motion Modes of Floating Structures
Time-Domain Implementation and Analyses of Multi-Motion Modes of Floating Structures Open
The study of wave-structure interactions involving nonlinear forces would often make use of the popular hybrid frequency–time domain method. In the hybrid method, the frequency-domain analysis could firstly provide the reliable and accurat…
View article: Python-assisted biological knowledge acquisition method to trigger design inspiration
Python-assisted biological knowledge acquisition method to trigger design inspiration Open
Design inspiration comes from the continuous stimulation of external information and the continuous accumulation of knowledge. In order to obtain an ideal design inspiration from nature, researchers have proposed a large number of biologic…
View article: Valorization of agrowaste digestate via addition of wood ash, acidification, and nitrification
Valorization of agrowaste digestate via addition of wood ash, acidification, and nitrification Open
The valorization of low pollutant bioenergy waste streams as fertilizers is key for a more circular economy. In addition to supplementing nutrients, the wood fly ash could be used as stabilizing agent of an agrowaste digestate, to minimize…
View article: A Preliminary Study on Identifying Biomimetic Entities for Generating Novel Wave Energy Converters
A Preliminary Study on Identifying Biomimetic Entities for Generating Novel Wave Energy Converters Open
Biomimetics and creatures could contribute to novel design inspiration for wave energy converters, as we have seen numerous examples in applications of other branches of engineering. However, the issue of how to obtain valuable biological …
View article: Circularity of Bioenergy Residues: Acidification of Anaerobic Digestate Prior to Addition of Wood Ash
Circularity of Bioenergy Residues: Acidification of Anaerobic Digestate Prior to Addition of Wood Ash Open
The present study investigated the acidification treatment of an agrowaste digestate and a food waste digestate, which is necessary before the addition of the wood ashes to attain the pH of zero point of charge in the blend intended to beh…
View article: Strategies for the production of a stable blended fertilizer of anaerobic digestates and wood ashes
Strategies for the production of a stable blended fertilizer of anaerobic digestates and wood ashes Open
View article: Hydrodynamic studies of floating structures: Comparison of wave-structure interaction modelling
Hydrodynamic studies of floating structures: Comparison of wave-structure interaction modelling Open
Current panel methods for wave-structure interactions employ the potential flow theory, which provide fast, reliable and relatively accurate predictions for the marine structures, and now some open source packages, NEMOH and HAMS, are avai…