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Markets & Applications
Renewables and Wind Power
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Wind Power
Bosch Rexroth is positioned in the Wind Power market place as a prime supplier to the major wind turbine manufacturers of components and systems into this quickly maturing technology of Main Drive Gearboxes, Pitch Controls, Dynamic Brake Systems and Power Packs.
The company has two business units involved in Wind Power. The Gearboxes are manufactured in the Mobile Hydraulics business unit (formally known as Lohmann and Stolterfort) and the Hydraulic controls are from our Industrial Hydraulics business unit.
We are also working within the new area of Special Assembly Machines especially designed for Offshore Wind Turbines where our mechanical handling expertise for large systems is proving to be in demand.
Bosch Rexroth are long term members of the British Wind Energy Association
Renewable Concepts
The emerging Renewables market place is an ideal location for Bosch Rexroth to position itself as The Drives and Controls Company, during this very exciting time with new technologies for extracting energy appearing all the time.
The technologies used by Bosch Rexroth grow from the history and expertise of Drives and Controls. The name is always associated with innovative solutions to special problems in the diverse and often harsh environments.
This market is very young and we work confidentially with many companies. We have development projects with various machine designers and manufacturers in various stages of the lifecycle including some in prototype testing. Over the course of the next few years there will be more units that are tested and go into production, that can then be discussed more publicly.
Application Example - Lunar Energy / Rotech Engineering
Rexroth is proud to be involved in the Rotech Tidal Turbine (RTT) project currently under prototype development by Rotech Engineering. The RTT has been exclusively licensed to Lunar Energy Limited. The novel concept of the turbine hydrodynamic interaction with the tidal stream is explained on the Lunar Energy Web site.
Rexroth were able to provide the scale of equipment needed to bring the concept from small scale water tank model to prototype scale (1MW) able to be placed on the sea bed for realistic trials.
Power is taken from tidal water movement using a turbine which turns a large fixed displacement hydrostatic pump to produce hydraulic pressure and flow.
The hydraulic flow and pressure varies with the state of the tidal stream, from minute to minute, due to the nature of the hydrodynamics of the location of the turbine. The turbine also reverses direction when the tidal flow reverses as it does twice a day.
The output required to drive the generator is required to be at a constant speed and direction.
Rexroth provides a duel overcentre swash plate axial piston motor type A4VSG1000 to carry out this task of converting the flow and pressure into mechanical shaft power.
It is, of course, not as simple as it sounds when you are dealing with up to 3000 litres per minute at 200 bar in a subsea chamber that is not accessible between planned maintenance.
However Rexroth has the expertise to handle the task.
A large control manifold and auxiliary pumps are manufactured to meet the needs of operation, safety and reliability with the long planned maintenance schedule periods demanded from the economics of the system.
Rexroth fully support the system manufacturer to bring this forward in the future to full scale production.
Current Time Line
The prototype unit will be placed in the water at the EMEC in Orkney during Summer 2006.
For further information you can download our brochures:
Your contact in the UK:
Louis Verdegem
UK Renewables and Wind Power Sales Manager
Bosch Rexroth Limited
15 Cromwell Road
St. Neots, PE19 2ES
Tel: +44 (0) 1480 223 270
Fax: +44 (0) 1480 47 00 58
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