MHI Begins Test Operation of Large-Scale Wind Power Generation System Adopting a
Hydraulic Drive Train
- A World's First, at Yokohama Dockyard & Machinery Works -
Tokyo, Jan 24, 2013 - (JCN Newswire) - In December Mitsubishi Heavy
Industries, Ltd. (MHI) commenced test operation at its Yokohama Dockyard &
Machinery Works of a large-scale wind power generation system that adopts a
hydraulic drive train in place of the earlier gear-driven system. The test
operation is a part of the project launched in September last year to develop a
hydraulic drive train system for offshore wind turbines, which is supported by
the New Energy and Industrial Technology Development Organization (NEDO). The
event marks a world's first operation of a large-scale hydraulic drive
train type wind power generation system applying MHI's Digital
Displacement Transmission(R) technology. Leveraging the test results, MHI will
accelerate its development of an offshore wind power generation system in the
7-megawatt (MW) class, with installation and operation slated to begin at
Hunterston, in the UK, within the current year. A mass-produced commercial
model will be targeted for market launch in 2015.
The system recently inaugurated in Yokohama is based on an existing
"MWT100" gear-driven wind power generation system that was
retrofitted with the new hydraulic drive train. The retrofitting involved
replacement of the step-up gear - which functioned as the power transmission
system to increase the rotation speed of the rotor (10 rotations per minute:
rpm) to the rotation speed of the generator (1,000 rpm) - by the Digital
Displacement Transmission hydraulic drive train.
MHI developed the new hydraulic drive train, with support from NEDO, based on
the superior digitally controlled hydraulic technologies of Artemis Intelligent
Power, Ltd. of the UK, a venture company acquired by MHI in 2010. The new
system offers numerous advantages over earlier systems. Adoption of the
hydraulic drive train, for example, realizes outstanding efficiency and
reliability through elimination of the conventional step-up gear and inverter,
components that have been an issue in the quest for large-scale wind power
generation systems. Also, the new configuration offers superlative cost
performance as a result of its incorporation of widely adopted hydraulic
equipment and materials and relatively inexpensive alternators.
MHI launched development of wind power generation systems in 1980, and the
company's worldwide deliveries to date exceed 4,000 units with a
collective output of 412.4 MW. With the test operation results of the latest
unit at Yokohama, the company will move swiftly forward in its development of
the new type system in order to respond to the schedules of the two projects:
the operation of onshore demonstration unit in the UK and an offshore floating
wind farm project in Fukushima, Japan. The new installations are slated to
begin trial operations in June 2013 and August 2014, respectively.
Going forward, MHI intends to aggressively develop and supply both carbon-free
power generation systems - wind, solar and geothermal - as well as highly
efficient systems fired by coal, natural gas and other sources that offer
outstanding thermal efficiency. In these ways the company looks to make
significant contributions to the prevention of global warming and to
conservation of energy resources.
About Mitsubishi Heavy Industries
Mitsubishi Heavy Industries, Ltd. (MHI), headquartered in Tokyo, Japan, is one
of the world's leading heavy machinery manufacturers, with consolidated
sales of 2,820.9 billion yen in fiscal 2011, the year ended March 31, 2012.
MHI's diverse lineup of products and services encompasses shipbuilding,
power plants, chemical plants, environmental equipment, steel structures,
industrial and general machinery, aircraft, space rocketry and air-conditioning
systems. For more information, please visit the MHI website at www.mhi.co.jp.
Mitsubishi Heavy Industries
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