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从整个世界发展趋势来看,风电设备正朝着单机大容量、变桨矩、变速恒频和直驱式方向发展。我国国产兆瓦级风机技术虽然进步较大,但距世界水平仍然存在较大差距。目前国外主流风电机组已达到兆瓦级,采用的是变桨变速的主流技术,丹麦为2.0～3.0MW,美国的主流机1.5MW,最高已有4.5MW。国内风机整机制造企业已基本掌握的是兆瓦级以下风机机组的制造技术,比较成熟且具有批量生产能力机型主要是600kW、750kW,技术类型为定桨定速技术,但还是属于国外10年前的主流机型和技术。
From the perspective of the development of the whole world, the wind power equipment is moving toward the stand-alone high-capacity, variable pitch torque, variable speed constant frequency and direct drive. Although China’s domestic megawatt-class fan technology progress larger, but still far from the world level there is a big gap. At present, the mainstream wind turbines abroad have reached the megawatt level, using the mainstream technology of variable pitch speed, Denmark is 2.0 ~ 3.0MW, the mainstream of the United States 1.5MW, the highest has 4.5MW. The domestic fan machine manufacturers have basically mastered the manufacturing technology of fan units below the megawatt level, the more mature models with mass production capacity are mainly 600kW, 750kW, technology type constant paddle speed technology, but still belong to foreign 10 Years ago, the mainstream models and technologies.