Wind energy in Bulgaria: Leitwind new 10.65 MW wind farm

At the end of April, the civil works for the realization of the third wind farm (Kavarna II) in Bulgaria began. The installation of the wind turbines is planned by mid of August, with operation scheduled by late September.

This new 10.65 MW wind farm will produce around 24 GWh of energy per year. Four 80m high LTW77 wind turbines of 1.5 MW each will be realized near Mogilishte.

The other three wind turbines are located near the first wind farm in Bulgaria, Kavarna I. One of them is a 1.65 MW LTW80, whereas the other two are 1.5 MW LTW77s with a hybrid tower. This newly developed tower has a height of 80 meters, but the first 15 are made of concrete.

With this project, for the first time, rotor blades and generator have been produced in-house.

LEITWIND – Technology that sets new standards

The gearless LEITWIND wind turbine impresses with its simplicity and technological innovation. Research, development, production, erection and customer support ensure the perfect product.

The compact and modular design of LEITWIND wind turbines enables fast installations even in locations with difficult access.

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 availability 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 and high durability and 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.

Who is behind LEITWIND

LEITWIND is part of LEITNER TECHNOLOGIES group, a name which has been a synonym for high performance technology of ropeways and snow groomers since 1888.

LEITNER TECHNOLOGIES employs more than 2030 people worldwide at its plants in Italy, Austria, 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 incorporated this revolutionary technology. Starting in 2007, Leitwind began serial production of wind turbines. For the 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.

Combining tradition and innovation

In 1888 the Sterzing mechanic Gabriel Leitner set up a workshop in his home town, where he produced agricultural machinery, material ropeways, water turbines and sawmill equipment, and within a hundred years the company developed into a global player in the field of ropeway engineering. The headquarters of today’s LEITNER TECHNOLOGIES group still occupy the original site in Sterzing.

By 1925 the business had grown from a workshop with just ten employees to a plant for the series production of agricultural machinery. After the 2nd World War, when tourism came to the Alps and generated demand for a modern mountain infrastructure there, the company switched from material to passenger ropeways, and in 1947 LEITNER built its first chairlift in Corvara, Italy.

LEITNER’s decision to focus production on the winter mountain infrastructure quickly proved a winner. Agricultural machinery production was discontinued in 1970 and replaced by snow groomer engineering. At the end of the 20th century, the company started to develop new production facilities and agencies outside of Sterzing in other countries, and today LEITNER has works in Austria, France and Colorado in addition to Sterzing as well as over seventy sales and service outlets worldwide.

In the meantime there has been rapid progress in ropeway engineering, too. Since 1983 high speed detachable systems have gradually replaced fixed-grip installations; the year 2000 saw the debut of the direct drive for ropeways, and ropeway systems have become a convincing solution to the problem of traffic congestion in urban areas. For that market, LEITNER has developed a rope-hauled light railway system by the name of MiniMetro.

Since 2003 LEITNER has made use of the synergies available from ropeway and wind power engineering to develop the LEITWIND wind turbine, in which the LEITNER direct drive is employed for the generator.

From agricultural machinery to wind turbines – from the very beginning LEITNER has always had a focus on quality, innovative products and cutting-edge technology.