brochure en
TRANSCRIPT
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 [email protected] www.leitwind.com
LEITWIND GmbH Perlhofgasse 2 A-2372 GießhüblTel. +43 2236 866270 Fax +43 2236 893713 [email protected] 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