arrow_back_ios

Main Menu

See All Software See All Instruments See All Transducers See All Vibration Testing Equipment See All Electroacoustics See All Acoustic End-of-Line Test Systems See All Academy See All Resource Center See All Applications See All Industries See All Services See All Support See All Our Business See All Our History See All Global Presence
arrow_back_ios

Main Menu

See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All Test Data Management See All DAQ Software See All Drivers & API See All Utility See All Vibration Control See All High Precision and Calibration Systems See All DAQ Systems See All S&V Hand-held Devices See All Industrial Electronics See All Power Analyzer See All S&V Signal Conditioner See All Acoustic Transducers See All Current and Voltage Sensors See All Displacement Sensors See All Force sensors See All Load Cells See All Multi Component Sensors See All Pressure See All Strain Sensors See All Strain Gauges See All Temperature Sensors See All Tilt Sensors See All Torque Sensors See All Vibration See All Accessories for Vibration Testing Equipment See All Vibration Controllers See All Measurement Exciters See All Modal Exciters See All Power Amplifiers See All LDS Shaker Systems See All Test Solutions See All Actuators See All Combustion Engines See All Durability See All eDrive See All Production Testing Sensors See All Transmission & Gearboxes See All Turbo Charger See All Training Courses See All Acoustics See All Asset & Process Monitoring See All Custom Sensors See All Data Acquisition & Analysis See All Durability & Fatigue See All Electric Power Testing See All NVH See All Reliability See All Smart Sensors See All Vibration See All Weighing See All Automotive & Ground Transportation See All Calibration See All Installation, Maintenance & Repair See All Support Brüel & Kjær See All Release Notes See All Compliance See All BKSV Worldwide Contacts
arrow_back_ios

Main Menu

See All API See All Experimental Testing See All Piezoelectric Charge Accelerometers See All Piezoelectric CCLD (IEPE) accelerometers See All Electroacoustics See All Noise Source Identification See All Environmental Noise See All Sound Power and Sound Pressure See All Noise Certification See All Industrial Process Control See All Structural Health Monitoring See All Electrical Devices Testing See All Electrical Systems Testing See All Grid Testing See All High-Voltage Testing See All Vibration Testing with Electrodynamic Shakers See All Structural Dynamics See All Machine Analysis and Diagnostics See All Dynamic Weighing See All Vehicle Electrification See All Calibration Services for Transducers See All Calibration Services for Handheld Instruments See All Calibration Services for Instruments & DAQ See All On-Site Calibration See All Resources See All Software License Management

Minesto generates power from tidal and ocean currents with measurement technology from HBK

MINESTO, Sweden

Introduction

Strain gauges critical in green technology project
Swedish clean tech companyMinesto already extracts one of the bigger energy sources of the future. At the moment, their award-winning tidal power plants are being tested in the ocean depths off the coast of Northern Ireland. Inside the prototype, HBK strain gauges play a key role in verifying how the plant behaves in the water and how it measures the forces to which it is exposed. Oceans cover 70 percent of the earth’s surface. This largely untapped energy source is the focus of Minesto, the largest marine energy company in the Nordics. In 2007, Minesto developed a new concept for tidal power called Deep Green.

chevron_left
chevron_right

Already producing electricity

Deep Green is a relatively small power plant that can extract marine energy even at slow water currents, which makes it considerably more cost effective than previous techniques. Both investors and prospective customers are showing great interest and the company plans to launch the first full-scale power plant in 2017. However, Deep Green already produces electricity using slow tidal currents in the test facility outside Northern Ireland.

Like a kite

The secret of Deep Green is that it moves. It flies like a kite in a figure eight pattern under water, reaching a speed that is up to ten times higher than the currents in the surrounding water. Therefore, the 1:4 scale prototypes can generate 3 kW when the tide has a speed of one meter per second. The goal is to launch a 0.5 MW power plant park in Wales in 2017 and to eventually expand it to an output of 10 MW.

Measuring inside the prototype

Minesto follows a rigorous development plan which has now reached the fifth generation of the prototype of the power plant at a scale of one to four. As part of the development work, complex calculations and simulations are important, but actual measurements are also critical to ensure that the project is on the right track. Minesto has used HBK’s expertise to help install strain gauges in the best possible way inside Deep Green. Heije Westberg, CTO at Minesto, explains: “We have received very good support from HBK. Strain gauges are not part of our core business, so it's important to get the expertise in measurement technology. HBK has experience from offshore installations and has better tools than we would have access to. In the end, it is both easier and cheaper to use professional help, fully rely on the installation to be solid and to provide reliable measurement results.”

Moisture and space - a challenge

Although the strain gauges are relatively protected inside the power plant, it is important to ensure that the moist environment in no way affects the measurement result. Thanks to its proven installation and sizing technology for offshore environments, HBK can guarantee this. The lack of space inside the prototype creates another challenge, leading HBK to glue the strain gauges directly onto the plant components before they are assembled in Minesto’s lab. Testing and measurement throughout the design process is a given at Minesto: “You can calculate anything, but only if you’re aware of its existence. There are always surprises in the form of wind, waves or other unknown loads. Therefore, it is necessary not only to simulate loads, but also to verify reality,” says says Heije Westberg. “Since we cannot over-dimension the power plant just to be on the safe side, we have to know exactly what kind of forces it is subjected to.”

Global plans

Measurement will continue to play a critical role at Minesto. In the first full-scale plant, plans are made to include equipment for force measurement. The company has big plans for the future - generating commercial electricity from slow ocean and tidal currents. There are also global opportunities, with projects already underway in several continents. Minesto continues its work to live up to the mission to help minimize the global footprint of the energy sector.

Facts about Minesto

  • Scandinavia's largest clean tech company in the marine energy field
  • Founded in 2007
  • The head office is located in Gothenburg, with a subsidiary in the UK
  • They develop power plants for commercial production of electricity from slow ocean and tidal currents
  • Has patented the marine power plant Deep Green
  • Has been named one of Sweden's 33 hottest young technology companies in the Swedish newspaper Ny Teknik and has been recognised by British magazine Power Technology
  • Listed on Nasdaq First North Stockholm. Main owners are BGA Invest and Midroc New Technology.

more about Minesto

Technology used