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Wind power generation using wind energy

  • We offer an optimal solution to meet customer needs   • What is wind power generation?   • Provide support in various situations We offer an optimal solution to meet customer needs   • What is wind power generation?   • Provide support in various situations
    We offer an optimal solution to meet customer needs   • What is wind power generation?   • Provide support in various situations
  • 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.
  • Provide support in many different situations with the needs of customers     To meet customer needs, we provide comprehensive support in various business situations from geological/environmental study and business planning to design, manufacturing, construction, commissioning and O&M after starting generator.
    Provide support in many different situations with the needs of customers     To meet customer needs, we provide comprehensive support in various business situations from geological/environmental study and business planning to design, manufacturing, construction, commissioning and O&M after starting generator.
  • We offer an optimal solution to meet customer needs
    We offer an optimal solution to meet customer needs

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.
In May 2011, Toshiba involved in the business cooperation with a South Korea company UNISON, and since then we provide WTGs under the brand of Toshiba by using our business sales network and construct power plants using these WTGs. 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

Characteristics of wind power generation
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.

Generator for 2 MV WTG
Generator for 2 MV WTG

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.

Longer blade produces higher annual energy production even with low wind speed

Nacelle layout

PMSG with gear box and full-size converter are used.

Nacelle internal structure
Nacelle internal structure 2 MV WTG

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

2 MW WTG power curve
Characteristics of 2 MW WTG
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 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

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–

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–

Achieving high wind resistance with long blades

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 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.

Installation of WTG
Installation of WTG

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