Gear Gear Companies Favor Prospects for Wind Power
Domestic wind power gear manufacturing industry is showing weakness due to a lot of elements. This circumstance also gradually spread to wind power parts manufacturing; Wind Power Gearbox is a representative. Yet, concerning the recently held Beijing International Wind Energy Conference& Exhibition, it truly is typically believed by gearbox enterprises that wind power business will still grow in importance of their overall business and current market downturn is temporary.
Gear market is growing fast. Gear transmission market in China has made rapid development recently, as per data released by National Bureau of Statistics, gross industrial output value of China's gear market increased year by year from 2005 to 2010, and year-on-year growth is more than 20%. During the period, although growth rate of gear industry was somewhat slowed down using economic crisis along with other objective aspects, gross output value still maintained substantial growthScraper Conveyor. In accordance with public data, in 2010, gross industrial output value of the entire gear market managed to be 94.635 billion Yuan; market demand of the whole gear market was over 140 billion Yuan, ranked second in the world. From scale and sales variables, gear market has grown to become a “leader” level industry in the world of basic parts of China's general machine components. As Industry insiders said, China has grown to become a real world gear manufacturing country. As far as we know, automobile manufacturing business has been the largest customer source of gear business over the past decade, accounting for up to 62%. In recent years, with domestic wind power market developing rapidly, its demand for gear parts and technical requirements are also increasing. Percentage of wind power gear is ever-increasing. Based on development goals set by latest released “China's wind power development route map for 2050”, China's wind power capacity will reach 200 million, 400 million and 1 billion kilowatts by 2020, 2030 and 2050; wind power will become one of China's 5 major power supplies. Inferring from that, output value of wind power gearbox stemmed from newly installed capacity will be nearly one hundred billion Yuan before 2020. Currently, there are mainly two techniques for fans, doubly-fed and direct-drive. The two structures have their positive factors and disadvantages: doubly-fed units is small, its motor is somewhat easy to make, its converter has small capacity, but it has a gearbox which increases maintenance costs; Direct-drive unit eliminated gearbox, but is bulky and difficult to transport, it requires full power converter, installation of permanent magnet is particularly inconvenient, and magnetic loss is actually a common problem, for this reason the cost is high. Based on general view of the Wind Turbine Gearboxes sector, the two techniques each has its merits; it can be expected that the two techniques will coexist for a long period, but for a rather long period of time, double-fed model will be predominate. Therefore, in the coming yrs, wind power will still be an important motive force to promote market development of gearbox.