A Framework for Collaborative Front-Loaded Design Space Exploration: Improving collaboration across the aeronautical supply chain

In the conceptual design phase, OEMs perform technology assessment to identify feasible solutions for their new aircraft. When the OEM is unable to assess a certain technology themselves, they consult Tier-1 suppliers to involve<br/>them in the design process. The suppliers have higher fidelity analysis tools that can help the OEM with their...

Beyond Jack-Ups: A Moonshot for Future Offshore Wind Turbine Installation Vessels for an Uncertain Market

The offshore wind market is rapidly growing, resulting in increasing wind turbine sizes, increasing distances to port, and a shift to deeper waters. A literature study in this thesis shows that existing wind turbine installation vessels, vessels under construction, and innovative concepts will not be able to install next-generation turbines or...

A future techno-economic evaluation of an offshore wind hydrogen system with battolyser technology on the Dogger Bank

Dutch offshore wind farms are primarily located near the coast and connected to the grid, but as offshore wind farms continue to expand and occupy more space, developers are turning to deeper waters. However, installing traditional monopile or jacket structures in these deeper waters can be expensive. One potential solution is the Dogger Bank, a...

Hydrogen Supply Chain Optimisation: Wind­ Based Hydrogen Supply Chain Optimisation For Non-­Stationary Storage Applications In An Early Market Development Stage

Implementing green alternatives in the heavy­-duty mobility market is required to reach the set climate goals of 2050 and decrease greenhouse gas emissions. Refuelling infrastructures based on alternative fuels such as hydrogen are not sufficiently available. This poses a barrier to large scale implementation and investment in new emission­ free...

Perforation of Monopiles to Reduce Hydrodynamic Loads and Enable use in Deep Waters

The offshore wind industry in Europe has experienced significant growth in the past decade, with wind farm development mostly focusing on the shallow area's in the North Sea. Naturally, the market is driven to reduce the Levelised Cost of Electricity (LCoE) to become more competitive with fossil fuels and less dependent on government subsidies....

Providing Stacked Balancing Services using Wind-Storage systems

In order to decarbonize the electricity grid, renewable energy sources must be utilised in con- junction with energy storage to provide ancillary services, which maintain electricity supply quality, reliability and restorability, whilst remaining aordable. Due to a lack of knowledge about the potential of stacking UK ancillary services and...

Applying a Needs Analysis to promote Daughter Craft for year-round access to far-offshore wind turbines: A comparative assessment of the transfer phase

New offshore wind farms are moving farther away from the shore; to locations characterised by adverse weather conditions. This challenges current maintenance strategies because, besides being further from shore, far-offshore wind turbines need more frequent maintenance and must be accessed in rougher weather conditions. Service Operation Vessels...

Modelling the installation of offshore wind farms: Defining the installation of offshore wind submarine power cables using a discrete event simulation based logistics model

A gap in the understanding of offshore wind submarine power cables is responsible for 70-80 % of failures in recent times. The failures originate from the phases of design, manufacturing, installation and operations. Joint industry collaborations such as the Cable Lifetime Monitoring project that form the background for this thesis, are aimed at...

Maintaining the project financing opportunity for Dutch offshore wind parks: When Corporate PPAs take over from the SDE+ subsidy

This thesis describes the identification and cost calculation of WACC1 stabilizing support mechanisms for new Dutch offshore wind parks, which are funded with PPA2 based project financing facilities, in a non-SDE+3 and electricity price volatile market.

Synergies in the offshore domain: A case study of the WINWIN concept

Since the ratification of and commitments made under the COP 21 summit, we have witnessed an increase towards implementing and utilizing renewable technologies in our energy mix. The global cumulative installed wind energy capacity in 2017 surpassed 540 GW, which is an increase of over 173% compared to 2010 levels. At the same time, Solar PV...

Dynamic Wind Speed in Dynamic Inflow Models

In the case of unsteady loading conditions at a rotor, the induced velocity response lags the thrust coefficient at the rotor. The two parameters that are responsible for unsteady loading conditions are rotor thrust (due to blade pitch, or rotational speed) and incoming wind speed. The induced velocity response to these two sources of...

Performance-based maintenance contracts for offshore wind farms: A decision-making flowchart to structure the sourcing process for the post-warranty O&M phase of offshore wind farms

The pioneers in the early 21th century who built the first big offshore wind farms now have to compete with the quickly improving renewable energy technologies and see their farm being out-dated (See also: Dvorak, 2013 &amp; Wind Energy Update, 2013). At present, wind farm owners face difficult decisions when finding the right O&amp;M contract...

Airfoil Design for Vertical Axis Wind Turbines: Including Correct Simulation of Flow Curvature

In the past, the vertical axis wind turbine (VAWT) lost the competition to its horizontal axis counterpart, having (wrongfully) presumed disadvantages like increased fatigue and low efficiency. Little research and development into the VAWT led to a large gap between the maturity of technology of both turbine types. Now that due to modern...

Innovative rotor design concepts for a 10 mw wind turbine: Scaling Technique, Performance and Feasibility Investigation

The reduction of the Levelised Cost of Electricity (LCoE) in wind energy, and offshore in particular, is among the main objectives of research in the academia nowadays, and a demanding task as well. Offshore wind farms are capital intensive investments and lowering uncertainties and costs throughout design, planning, installation and operational...