Commercial
Wind Power
其定义
Removing the gearbox removes the component that fails most often offshore. The price is several hundred kilograms of rare-earth magnet per megawatt.
材料清单
放大规模 →数量为 per MW of capacity参考区间
将这些数据理解为"大致如此，存在一定误差"。每家制造商的设计各有不同，且随着工程师逐步减少对高价物料的用量，数据会随时间下降。
| 材料 | 低 | 高 | 单位 | 基准 |
|---|---|---|---|---|
| Iron & Steel Dominates the mass by far. | 100,000 | 180,000 | kg | Tower, nacelle and foundation |
| Copper 关键 Offshore is far higher than onshore. | 3,000 | 8,000 | kg | Generator, nacelle and array cabling |
| Neodymium 关键 Direct-drive designs only. | 100.0 | 200.0 | kg | Contained in generator magnets |
| Dysprosium 关键 | 5.00 | 20.00 | kg | Heat and demagnetisation resistance |
| Boron 关键 | 4.00 | 8.00 | kg | Magnet alloy |
Indicative range compiled from published technology studies and chemistry; verify against a manufacturer specification before use. 标注为"微量"的行表示该物料含量极低，无法以质量形式有效表达——其制约因素在于纯度或供应商数量，而非吨位。
替代方案
替代是材料领域最被低估的力量。当某种金属价格高涨或在政治上难以获取时，工程师便会绕开它进行设计——整座矿山的需求可能因此消失殆尽。
