Systems & Solutions
Wind power generation using wind energy
Wind power generation means getting the electrical energy by converting wind energy into rotating energy of the blades and converting that rotating energy into electrical energy by the generator. Wind energy increases with the cube of the wind speed, therefore WTGs should be installed in the higher wind speed area.
We are working in partnership with wind turbine manufacturers to sell wind turbines and construct power plants using our sales network.We also keep developing electronic devices including controlling systems with our knowledge and technologies cultivated from thermal and hydraulic power plant designing and manufacturing technologies while are involved in the wind power generation business on our own. With a strength of standing on both sides, manufacturer and user, we offer solutions to meet customer needs in many different situations.
Easy-installable/operable wind power plant with no need to worry about depletion
Introduction of wind power generation has been increasing in the world, which has the following characteristics:
• 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.
Highly-reliable wind turbine technology
Hermetically-closed permanent magnet synchronous generator (PMSG) achieving an increased power generating efficiency with no need of external excitation system
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.
Longer blade produces higher annual energy production even with low wind speed
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.
Nacelle layout
PMSG with gear box and full-size converter are used.
2 MW WTG
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
This table can be scrolled horizontally.
| Model | U88E | U88 | U93 | |
|---|---|---|---|---|
| Rotor Diameter | 88 m | 93 m | ||
| Hub Height | 75 m | 80 m | 80 m | |
| Design Class | IEC SA* | IEC IIA | IEC IIIA | |
| Wind Speed | Extreme wind speed(Ve50) | 70 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 (Ve50) 70 m/s.
* Consult with us for wind speeds exceeding 70 m/s.
Toshiba wind power business
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.
Comprehensive support from assigning candidate sites –Planning–
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.
Achieving high wind resistance with long blades –Design/Manufacturing– ※1
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.
Suitable installation and secured maintenance
We provide suitable installation methods for each site.
Toshiba cooperating with wind turbine manufacturers 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 for smooth supply.
