28 八 10 Problems with wind turbine proposal
1) products in the production process, the appearance of quality, reliability operation with foreign units have a gap. Although this purpose of low consumption, domestic market demand, Dan its products in the international market with foreign products Can not , export volume is small, since there was no stable export channels, no Dakai the international market.
(2) product variety is not complete. At present, 100-watt-class families with small wind turbines can be mass-produced; kilowatt wind turbine can also be a small batch production; and 10 kilowatts-class products in China is not able to produce, not for products.
(3) off-grid home wind turbine supporting the use of batteries required, most users are car batteries, due to the discontinuity of wind energy, so batteries prone to overcharge and over discharge phenomenon, which seriously affected its life. The battery prices will be relatively high, which also affected the promotion of china wind turbine sales.
(4) and the wind generators less research supporting the product, the current feature is only limited to lighting, watching television, to create benefits to the farming fishermen supporting product development and testing much. Higher power of the wind turbine to do work to promote testing and not many of these have affected the enthusiasm of farmers and herdsmen to buy.
(5) the wind turbine generator using a non-polluting, clean energy, but the state does not have the tax and fiscal concessions and incentives.
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24 八 10 Wind turbine must have low voltage ride through capability
Speed development of China’s wind turbine should be said that the first row in the world, Er Jishulaiyuan main Yikaoguowai, Guo Qu wind turbine in the case of small, low-voltage line pairs make different provisions through Gongneng Mo, Mu Qian Yin home wind turbines assembly Jisuduoji number increase, the low voltage power to the fans across the increasingly clear, not long ago, Dian Wang Jiu Guidingwangshang fan Bixujubei low voltage Chuanyuegongneng, the Bu Jin Tigaodianwang quality Geng Zhongyaoyeshi Li Yong of the wind turbine generators plays an important role. European fans have had this technology early, most domestic enterprises are upgrading existing fans and to achieve low-voltage across the function. At present, some enterprises still do not realize this function, and the net will likely be hindered.
Through the ability of low-voltage power system when a larger proportion of stroke power generating capacity, the power system failure resulting in the voltage drop, the wind farms will seriously affect the removal of the system stability, which requires the wind generator with low voltage ride through ( Low Voltage Ride Through, LVRT) capabilities to ensure the system after the failure of wind power grid to run uninterrupted.
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29 七 10 The wind turbine will power the next generation of mainstream models
China’s wind power generator industry is trying to among the powerful club, stepping stone or a large-capacity wind turbine. In this round of investment feast in sounded “Chong Fenghao” and not just China Rui Jin wind turbine generators names such companies, even the little-known small and medium enterprises are eager to expansion through the equipment at sea wind power, “Arena” occupying the place.
“China’s wind turbine should be more large-scale development.” Recently, the National Energy Board new energy and renewable energy deputy director of the history of Tateyama in public to the enterprise “propaganda.” And gives concrete ideas, “China’s current 1.5-megawatt units relatively mature technology, but would require a more rapid increase, making the land of wind power to the main unit 3 MW offshore wind turbines to 5 MW and 10 ahead of the layout MW research. ”
Wind power industry, according to the authority of the Danish consultancy BTM recently released “World Wind Energy Development” report, with the wind generators industry development and large-capacity wind turbine technology has become an inevitable trend, more efficient 3 MW and more The small wind turbine will power the next generation of the mainstream model.
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21 七 10 Successful trial of domestic capacity Electric Group’s largest wind turbine
Recently, the Electric Group Shanghai Electric Machine Factory Co., Ltd. Taiwan 3.6MW first double-fed induction wind generator joint test with the converter, with excellent performance successfully complete trial. This is the biggest so far developed the capacity of the double-fed induction wind turbines, to its successful development, marks the Shanghai Electric in China wind power generator in the field of product development leader. Meet the specifications of the generator in the center of the high, weight, moment of inertia of the rotor under the premise of wind generators high efficiency, low temperature rise of stator and rotor, bearing the advantages of low temperature; motor performance test data, fully integrated to achieve the level of similar foreign motor .
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12 七 10 CN2000KW wind turbine pilot
Currently, Austria WINTEC XJ jointly developed with independent intellectual property rights CN2000KW wind turbines and network testing ongoing. XJ wind power technology company staff to fully carry forward the “unity, cooperation and indomitable wit, perseverance and” work style, in December last year, the first wind generators prototype XJ day in Neimeng Ha Wusu after the success of wind loading, XJ wind power technology companies have signed Datang Sanmenxia Yellow River (Qingyuan) wind farm project in Henan Province Tau Ye County Wind Power generator Project and other large single contract, achieved outstanding results. Currently, wind power companies XJ sales in 2010 of 50 Typhoon aircraft production plans are in full swing to promote the process.
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07 七 10 Global wind turbine giant intensified patent lawsuit
Currently, wind power generaotor is in the process of industrialization. U.S. Department of Energy released data show that the total U.S. wind power installed capacity of 2.47 MW from 1999 to 2009 of 34.86 MW. In 2007 to the end of 2009 these 3-year growth is particularly rapid, the additional capacity of nearly 2000 to 2006, 7 years to 3 times the additional capacity.
Since 2002, the U.S. patent issued over 800 wind turbine parts. Denmark’s Vestas Wind Systems, Germany 阿洛伊斯沃 this, Japan’s Mitsubishi Heavy Industries and General Electric are the United States holds the patent more than wind turbines. GE’s small wind turbines in which nearly 150 patents, came out top. General Electric is the largest U.S. supplier of wind turbines. According to the American Wind Energy Association estimates that in 2008 the U.S. General Electric wind turbines account for 43% of the market, and has more than 10 companies through licensing its patented technology. However, GE’s market dominance by Mitsubishi Heavy Industries challenges. Mitsubishi Heavy Industries in 2007, announced its 2.4 MW wind turbine units in the United States has received 411 orders. Alone order to close the nation’s total installed capacity by 2009 3 times. General Electric in early 2008 in the United States International Trade Commission (ITC) launched 337 proceedings, sued Mitsubishi for infringement of common wind turbine U.S. patent US5, 083,039; US6, 921,985, and US7, 321,221.
International Trade Commission in March 2008 filing, investigation. August 2009, the International Trade Commission administrative judge initially determined that Mitsubishi Heavy Industries and ’985 ’039 patent infringement, but did not infringe ’211 patent. However, the International Trade Commission’s unfair import investigations office Quedui administrative judge’s decision contended that General Electric Mitsubishi Heavy Industries, did not violate the patent, because General Electric is not in the United States of its patented technology, which does not meet under the Section 337 rule out the Mitsubishi wind turbine requirements.
January 8, 2010, the International Trade Commission’s six members of the Mitsubishi Heavy Industries of determination after review of the wind turbine generator does not infringe GE’s patents, without violating Section 337, so as to Mitsubishi 2.4 megawatt wind generators into the U.S. market exclusion a roadblock. However, General Electric, do not be to hand over the market, claiming to appeal the ruling of the International Trade Commission, and on February 11, 2010 Federal District Court in Texas alleging infringement of its U.S. patents Mitsubishi Heavy Industries, US6, 879,055 and US7, 629,705. In this regard, Mitsubishi Heavy Industries is not weakness, in the May 20, 2010 in the United States Court of Arkansas Western Federal antitrust suit against General Electric violations, abuse of patent litigation against competitors, threatening small wind turbine users. On the same day, Mitsubishi Heavy Industries is also in Central Florida to the Federal Court infringement lawsuit against General Electric, U.S. Patent US7, 452,185.
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17 四 10 The first sets the intertidal zone successfully lifting the wind turbine
Recently, Jin Feng Technology Co., Ltd. in Jiangsu Province, the water ring of the 2.5MW wind farm wind turbine successfully completed loading. This is a golden first wind technology installed wind turbine intertidal zone, the intertidal zone to develop future wind turbine foundation.
According to reports, the project from the Yangtze New Energy Development Co., Ltd. together with Goldwind, in December 2009 started construction of fan base, early in March 2010 began to fan equipment supplier, from the March 18 start lifting, 24, a smooth Lifting completed. Ongoing construction and electrical control systems engineering submarine cable laying, and the network is expected to run in May to achieve.
Project used Goldwind 2.5MW fans in the Yangtze River Xiangshui new wind energy ring water intertidal area, just 600 meters from the seawall line, to overcome tidal flood, typhoons and other adverse natural conditions. For the special geographical environment and climate conditions, gold wind generators technology product design capability to play a series, provided the owners meet the needs of the intertidal zone fans. In addition, gold 2.5MW wind technology permanent magnet direct drive fans with advanced permanent magnet direct drive technology and full-power converter technology, simple structure, high reliability, high quality power generation, and Network Characteristics superior, low-voltage across the remarkable ability and so on.
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