TAPPEIN

ER.

Who is behind LEITWIND

LEITWIND is part of the LEITNER TECHNOLOGIES group, a name which has been a synonym for high perform-

ance technology of ropeways and snow groomers since 1888.

LEITNER TECHNOLOGIES employs more than 2400 people worldwide at its plants in Italy, France, India and

North America, as well as in 70 sales and service points. Since 2000, continuous research and development

coupled with a high degree of technological competence have enabled LEITWIND to take advantage of synergies

between the ropeway and the wind turbines technologies. The resulting turbine is an integration of a direct drive

generator into a wind turbine. In 2003, Leitner produced and installed its first wind turbine prototypes that incor-

porated this revolutionary technology. Starting in 2007, Leitwind began serial production of wind turbines. For

LEITNER’s engineers, the search for quality and simplicity is a primary objective in all of the group’s businesses.

Because simplicity combined with quality guarantees highest reliability and profitability.

Since the company’s inception LEITNER TECHNOLOGIES’s success is based on quality and leading edge technology.

Product overview

LEITWIND makes the difference

Gearless direct drive

Fewer mechanical and electrical losses greater efficiency

Low maintenance maximum availability

Lower rpms of individual components less wear and tear

Reduced acoustic emission less environmental impact

Synchronous generator with permanent magnets

Self-induced maximum power yield

Simple installation short erection time

Segmented design high reliability

Modular design

Reduced weight of the main components low transportation and installation costs

Components easily accessible low maintenance expense

LTW70 LTW77 LTW80

Cut in wind speed (m/s) 3,0 3,0 3,0

Cut out wind speed (m/s) 25 25 25

Rated power (kW) 2000 (1700) 1500 1500

Hub height (m) 60 61,5 / 65 / 80 60 / 80 / 100

Wind class IA IIA IIA

LEITWIND SPA Via Brennero 34 I-39049 Vipiteno (BZ)Tel. +39 0472 722111 Fax +39 0472 722586info@leitwind.com www.leitwind.com

LEITWIND GmbH Perlhofgasse 2 A-2372 GießhüblTel. +43 2236 866270 Fax +43 2236 893713 55info@leitwind.com www.leitwind.com

Synchronous generator with permanent magnet

The generator is the wind turbine’s core compo-

nent. The rotor, hub and generator are directly con-

nected to each other.

Yaw system for wind direction adjustment

The wind direction adjustment is automatically

monitored by the turbine’s control system, pro-

viding best performance.

Driven by the wind

LEITWIND – Technology sets new standards

The gearless LEITWIND turbine impresses with its simplicity and technological innovation. Research,

development, production, erection and customer support ensure the perfect product.

Efficiency is maximized in every range of performance as mechanical and electrical losses are minimized

thanks to the patented direct drive with a permanent induction synchronous generator. A high degree of avail-

ability and a minimum wear are ensured because of the low rotational speed (rpm) of the reduced number of

high quality rotating parts. The end result is an efficient and powerful wind turbine with low-service-costs, high

durability and maximized profitability.

The control system, developed specifically for the LEITWIND turbine, uses variable rpms and harmonious

pitch control to optimize production in partial and full load ranges.

The frequency converter specifically manufactured for the LEITWIND turbines ensures a high degree of grid

compatibility. This feature allows LEITWIND equipment to operate even within weak and unstable grids.

The compact and modular design of LEITWIND turbines enables fast installations even in locations with

difficult access.

Hub component group

The hub incorporates the motors and the

electronics for the pitch system which con-

trols each blade individually.

Leitwind technology

Direct driveThe hub is directly connected to the generator. This design eliminates the gearbox, which is one of the weak points of traditional wind power turbines. Due to less friction the wind turbine is more efficient at low wind speeds and thus, suitable for low-density wind power areas.

Fewer Rotating PartsThe reduction in the number of rotating parts results in higher reliability. The parts rotate slowly – in compari-son, the traditional wind turbine rotates just as much in a few months as a LEITWIND turbine in 20 years.

Modular ConceptLEITWIND turbines are designed based on a modular concept that ensures rapid erection and low trans-portation and installation costs. The generator is part of the load-bearing structure and contributes to economical weight management.

Innovative GeneratorLEITWIND turbines have a multi-pole synchronous generator with permanent magnets. The optimum de-sign makes the LEITWIND turbine most economical.

Greater Power Yield The use of permanent magnets eliminates the need for electrical excitation of the generator coils and improves the turbines’ yield, especially in the partial load range.

Generator CoolingThe induction performance is completely available as energy yield, which is especially advantageous in the partial load range.

Accessibility The unique hollow rotor shaft allows safe and easy access for service and maintenance of all parts.

No External Transformer Station RequiredExternal structures are unnecessary, since all the power electronics and the transformer can be inte-grated in the tower base.

Minimized Maintenance and ServiceThe reduction of moving parts and ease of main-tenance result in lower operating and maintenance costs. Modular design allows replacing of parts of the rotor without having to dismantle the entire gen-erator.

High reliability and performanceThe confluence of proven technology and innovative solutions leads to an extremely reliable turbine with outstanding energy yield.

Selected references

LEITWIND SPA Via Brennero, 34 I-39049 Vipiteno (BZ), Italy Tel. +39 0472 722111 www.leitwind.com

Malles, Italy2003/2006LTW62 IEC IA, LTW77 IEC IIA

Uthumalai, India20072 LTW77 1.5 MW IEC IIA h65

Salzstiegl, Austria2007LTW77 1.35 MW IEC IIA h65

Mogilishte, Bulgaria 2007/20083 LTW77 1.5MW IEC IIA h65

Badia Calavena, Italy2008LTW77 1.5 MW IEC IIA h65

Montecatini, Italy2008/20096 LTW77 1.5MW IEC IIA h61.5

Vulganello, Italy20092 LTW77 1.0 MW IEC IIA h65

Pellafol, France20092 LTW77 1.5MW IEC IIA h65

Kalluthu, India2009/201012 LTW77 1.5 MW IEC IIA h65

Grouse Mountain, Canada2009LTW77 1.5 MW IEC IIA h65

Kavarna, Bulgaria2009/20102 LTW80 1.5 MW IEC IIA h80

Kavarna I, Bulgaria20096 LTW77 1.5 MW IEC IIA h80

Kottai, India2009/20103 LTW77 1.5 MW IEC IIA h65

Chettikurichi, India2010LTW80 1.8 MW IEC IIA h80

Puglia, Italy201015 LTW 77 1.0 MW IEC IIA h65

Kavarna II, Bulgaria20106 LTW77 1.5 MW IEC IIA h80