Progress update on the development and testing of an advanced power take-off for

marine energy applications

Authors: Simon Robertson, Donald Noble, Henry Jeffrey, Luca Castellini and Michele MartiniPresenter: Noor van Velzen – University of Edinburgh

EWTEC 2019, Wednesday 4th September

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Content

• Policy and Innovation Group – University of Edinburgh• UMBRAGROUP • Electro-Mechanical Generator (EMG)• EMG development timeline• EMERGE project• IMAGINE project• Conclusions & Next Steps

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Policy and Innovation Group University of Edinburgh

Services:• Techno and Socio-Economic Assessment • Life Cycle Evaluation• Array Optimization Analysis• Technology Roadmaps• Consultancy

Main partners & funders:

Team Leader: Henry.Jeffrey@ed.ac.uk

policyandinnovationedinburgh.org

linkedin.com/company/policy-and-innovation-group

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Policy and Innovation Group University of Edinburgh

UK Ocean Energy Review 2018• Overview of developments in UK wave and tidal sector in 2018 in terms of:

• Key sector achievements• Supporting policies• Research and development• Technology demonstration

Wave and Tidal Energy: The Potential Economic Value• Potential of long-term economic benefits in terms of GVA of the wave andtidal sectors out to 2050 by exploring an ambitious scenario.

policyandinnovationedinburgh.org

linkedin.com/company/policy-and-innovation-group

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UMBRAGROUP

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Electro-Mechanical Generator (EMG)

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Mechanical Power(Linear speed, linear force)

Ballscrew

Mechanical Power(Angular speed, torque)

PM generator

Electrical Power

EMG Benefits

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• Technology transfer• Efficiency• Reliability• Compact system • Cost effective for large scale• Adaptable

Pre-2012 2012 2013 - 2015 2016 - 2017 2017 - 2019 2019+

EMG development timeline

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Bench Tests Technology Adaption

5 kWp & 12.5 kWpdevelopment & testing 100 kWp 265 kWp

Actuator

Project

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Electro-MEchanical Reciprocating GEnerator

This project has received funding fromWave Energy Scotland as part of stage 3for Power Take-Off projects

• Objective:

“This project will allow developing engineering solutions for survivability in the marine environment and give valuable information concerning the EMG performance in real sea conditions”Budget: circa £2.5m• Timeline: 2017 – 2019

• Partners:

HardWare-In-the-Loop Testing• Location: Doosan Babcock, Glasgow, Scotland• Environment: dry and flooded• Control system: displacement/force/speed control• Input: SIMULINK simulations• Peak Mechanical Power: 100 kWp

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HPP1

Actuator

HPP2 Container for ancillaries

EMG support frame

Servo-valve

Hard-Ware-In-the-Loop Testing• Results:

• Irregular wave tests:• Able to provide a reaction force proportional to speed under irregular conditions

• Constant speed tests:• Average efficiency 75% - 85% (mechanical input -> EMG -> AC electrical output)

• Load tests:• Tested force load: 215 kN

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Displacement

Real Sea Testing

• Location: Scapa Flow, Orkney, Scotland• WEC: point-pivoted design (based on Seapower Scrl)

• Deployment: summer 2019

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Scaling Up

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Peak Mechanical Power

HWIL & Offshore Testing

Peak Axial Load

Advanced HWIL

100 kWp

265 kWp

Stroke

Peak Axial Speed

100 kN

330 kN

1 m/s

2.7 m/s

1 m

4 m

Project

• Objective:

“Develop a new Electro-Mechanical Generator (EMG) for wave energy applications: a ground-breaking technology that can decrease by over 50% the CAPEX of current PTO technologies, while increasing average efficiency above 70% and lifetime to 20 years.”• Budget: circa €3.75m• Timeline: 2019 – 2021 (30 months)

• Partners:

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Innovative Method for Affordable Generation IN ocean Energy

This project has received funding fromthe European Union’s Horizon 2020research and innovation programmeunder grant agreement No 764066

Advanced HardWare-In-the-Loop Testing

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• Location: VGA, Naples, Italy• Environment: flooded• Control system: force/speed control • Input: WEC-SIM loading conditions based

on linear PTO WEC designs and European deployment locations

• (by K2 Management: EWTEC paper - Preliminary Load Assessment: UMBRA’s 250 kW EMG PTO)

Conclusions• Successful Technology Transfer • Lab and Real Sea Testing

• demonstrating capabilities and opportunities

• Analysis of real sea testing EMERGE• Advanced HWIL testing IMAGINE• Techno-economic Assessments

• Levelized Cost of Energy (LCOE)• Life-Cycle Assessment (LCA)• Socio-economic Assessment • Development of Business Plan

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EMERGE EMG deployment, Orkney 2019

Next Steps

Noor van Velzen – L.vanvelzen@ed.ac.uk

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Grazie Mille!

h2020-imagine.eu www.waveenergyscotland.co.uk

Luca Castellini – lcastellini@umbragroup.compolicyandinnovationedinburgh.org

www.umbragroup.com

EWTEC papers

• Numerical and experimental test on a large scale model of a pivoting wave energy conversion system

• D. Coiro, G. Troise, N. Bizzarrini, L. Castellini

• Preliminary Load Assessment: UMBRA’s 250 kW EMG PTO

• J. Cruz, M. Atcheson, T. Martins, L. Castellini, and M. Martini

• Thursday 10.40 - 11.00: Room Elettra

• Progress update on the development and testing of an advanced power take-off for marine energy applications

• S. Robertson, D, Noble, L. Castellini, M. Martini

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• Metrics for Wave Energy Converter Hull Geometry Optimisation• A. Garcia-Teruel, D. Forehand, and H. Jeffrey

• Offsetting of wave and wind resource and resultant economic benefits: GB case study

• S. Pennock, N. Bharathi, D. Crooks, H. Jeffrey, P. Möller

• Capability Assessment of DTOcean Array Design Tool for Ocean Energy

• T. Bloise Thomaz, L. van Velzen, H. Jeffrey, E. Medina Lopez, and T. Wills

• Towards Reliability-Based Geometry Optimization of a Point-Absorber with PTO Reliability Objectives

• C. Clark, A. Garcia-Teruel, B. DuPont and D. Forehand