Systems & Solutions
Systems & Solutions
• No CO2 emission
• Wind is a safe energy source existing everywhere, and there is no need to worry about depletion like fossil fuel
• Simple equipments and easy operation
• Few affection to nature environment
In the world today, progress of technologies to develop larger WTGs are remarkable, and it makes electric output per one WTG unit increased and large field of WTGs called "wind farm" has developed. Technologies of building offshore WTGs are progressing as well.
For permanent magnet excitation, the generator achieves maintenance-free operation and reduced failure rate by removing slip rings for external excitation. Due to no need of external excitation system, power generating efficiency increases. With the use of water cooling and internal fan cooling systems, the generator does not take in air from outside, which is suitable for use in an environment with many fine particles in space or coastal/offshore areas.
Using longer blade allows more wind energy to be converted into electricity. For 2 MW WTG type U93, blades with 45 m length and 93 m diameter, that is 16% longer than other manufacturers, are applied, which increases the area receiving wind and produces higher annual energy production even with low wind speed.
PMSG with gear box and full-size converter are used.
Toshiba's 2 MW WTG can be characterized by the following features:
• Model: U88E
• High reliability achieved by means of medium-speed gear (1:72)
• Small permanent magnet synchronous generator (PMSG)
• Hermetically-closed generator with water cooling system
• Affinity for high-voltage system in a full converter system
|Rotor Diameter||88 m||93 m|
|Hub Height||75 m||80 m||80 m|
|Design Class||IEC SA*||IEC IIA||IEC IIIA|
|Wind Speed||Max.||80 m/s||59.5 m/s||52.5 m/s|
|Avg.||8.5 m/s||7.5 m/s|
|Cut-in||3 m/s||3 m/s|
|Rated||12 m/s||11.5 m/s|
|Cut-out||25 m/s||25 m/s|
|Rated Rotating Speed||6 to 17.5 rpm|
|Temperature Condition||General||-20 °C to +45 °C (During Operation)|
|-20 °C to +55 °C (Out of Operation)|
|Cold||-30 °C to +45 °C (During Operation)|
|-40 °C to +55 °C (Out of Operation)|
* IEC standard: Reference wind speed 50 m/s, average wind speed 8.5 m/s, extreme wind speed 80 m/s
To meet customer needs, Toshiba provides comprehensive support in many different business situations from geological/environmental study and business planning to design, manufacturing, construction, commissioning and O&M after starting generator.
We support our customer from assigning candidate sites including geological or environmental study, handling laws/regulations matters, to construction planning. Also we provide packaging solutions with storage/secondary battery for stable generator output and optimize installation point by micrositing with CFD for complicated land structure.
We have variety of WTGs with long blades that covers wide range of endurance wind speed, and so we are able to provide WTGs that are suitable for each site. We also keep developing large WTGs for onshore/offshore in order to decrease the unit cost.
We provide suitable installation methods for each site.
Toshiba cooperating with UNISON and other domestic subcontractors provide a variety of periodical maintenance, repair, overhaul, and warranty menus to support safe and stable operation. For parts supply, we have parts inventory at domestic subcontractors and Sacheon Plant in South Korea for smooth supply.
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