A!B!
风电零部件系列专题(四):风电叶片—风电大型化和降本的重要一环
.......................... 5
叶片是风电最基础的关键零部件之一,占主机成本比例超 20% .......................................... 5
叶片技术迭代趋势:力学性能优化、轻量化和降本 ............................................................... 6
增强纤维:玻纤目前仍是主流材料,碳纤维需求有望逐步提升 ........................................... 7
碳纤维材料的成本、设计结构和生产工艺等瓶颈有望逐步突破 ........................................... 9
树脂基体:树脂价格呈现高波动性,材料选择将顺应降本趋势 ......................................... 11
芯材:主要材料包括巴沙木、PET、PVC .............................................................................. 13
叶片结构:双腹板结构向单腹板转变,分段叶片为研发方向 ............................................. 14
风电叶片上游原材料成本压力有所缓解,下游需求随风电发展持续走高 ......................... 15
风电叶片市场集中度较高,CR5 占比近 70% ........................................................................ 16
风电迈入平价上网阶段,叶片大型化助力风电降本 ............................................................. 17
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表 目 录
表1: 叶片用玻纤的主要型号 .............................................................................................................................. 7
表2: 风电复合材料叶片成型工艺比较 ......................................................................................................... 10
表3:国内风电用玻纤主要上市公司产能情况 .......................................................................................... 11
表4:国内风电用碳纤维主要上市公司产能情况 ..................................................................................... 11
表5:国内环氧树脂主要上市公司产能情况 .............................................................................................. 12
表6:芯材特点对比 ............................................................................................................................................ 13
表7:国内主要叶片厂商材料、产品结构设计和工艺技术研发进度 ................................................. 14
表8:风电叶片主要厂商产能竞争格局(2020 年) ............................................................................... 17
表9:国内风电标杆上网电价(元/kwh) .................................................................................................. 17
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C!A!B!
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