Gear Gear Corporations Favor Prospects for Wind Power, Demands for Gear Elements Increasedby Helen J. Hurlbut Helen Blog Domestic wind power equipment manufacturing business is displaying weakness on account of many elements. This circumstance also gradually spread to wind power parts manufacturing; Wind Power Gearbox can be a representative. Yet, relating to the not too long ago held Beijing International Wind Power Conference& Exhibition, it truly is generally believed by gearbox enterprises that wind power business will will begin to grow in importance of their overall business and current market downturn is temporary.
Gear market is growing fast.
Gear transmission business in China has made rapid development in recent times, according to data released by National Bureau of Statistics, gross industrial output value of China's gear market elevated year by year from 2005 to 2010, and year-on-year growth is over 20%. During the period, although rate of growth of gear sector was pretty slowed down caused by economic crisis and also of objective aspects, gross output value still maintained substantial growthGearbox for Rotary Cutter.
Based on public data, in 2010, gross industrial output value of the entire gear sector managed to be 94.635 billion Yuan; market demand of the whole gear business was more than 140 billion Yuan, ranked second in the world. From scale and sales aspects, gear sector has grown to be a “leader” level market in the world of basic parts of China's general machine elements. As Industry insiders said, China has become a real world gear manufacturing country.
As far as we know, automobile manufacturing sector has been the largest customer source of gear business within the last decade, accounting for up to 62%. In recent years, with domestic wind power industry developing rapidly, its demand for gear parts and technical requirements are also increasing.
Percentage of wind power gear is ever-increasing.
In line with 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 five major power supplies. Inferring from that, output value of wind power gearbox derived 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 favorable aspects 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 can be a common problem, as a consequence the cost is high.
Based on general view of the Gearboxes for Wind Turbines sector, the two techniques each has its good points; it's expected that the two techniques will coexist for a long period, but for a very long period of time, double-fed model will be predominate. Therefore, in the coming yrs, wind power will still be an indispensable motive force to promote sector growth of gearbox.
Created on Dec 31st 1969 18:00. Viewed 0 times.
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