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微型风力轮机旋转动力学与塔影效应的减少顺序分析建模
Aly A Ramzy1, Adel Elsabbagh2, Ashraf M Hamed3
1Design and Production Engineering Department, Faculty of Engineering, Ain Shams University, Cairo, Egypt. aly.ayman@eng.asu.edu.eg.
Scientific reports
|May 13, 2025
概括
微型风力轮机 (μWTs) 由于快速旋转和动而经历高振动. 优化发电机轴承跨度和转子重心位置可显著降低这些振动,改善μWT性能和寿命.
科学领域:
- 机械工程 机械工程
- 可再生能源系统可再生能源系统
- 振动分析 振动分析
背景情况:
- 微型风力轮机 (μWTs) 在更高的旋转速度下运行,与较大的风力轮机相比,导致显著的振动水平.
- 直接驱动配置和尾翼用于μWTs的方向控制,有助于实现独特的动态负载条件,包括高曲率和陀螺负载.
- 现有的动态分析工具通常是为大型风力轮机设计的,因此需要对μWT动态进行专门的研究.
研究的目的:
- 研究微型风力轮机 (μWTs) 独特的动态负载条件和振动特性.
- 开发一个简单的数学模型,以更好地了解μWT行为的动态.
- 确定影响μWT振动的关键设计参数,并提出提高性能的方法.
主要方法:
- 开发一个简化的数学模型来分析μWT动态.
- 进行参数研究,重点关注发电机轴承跨度和转子重心 (CG) 位置.
- 将计算的最佳CG放置应用于现有的μWT设计,通过案例研究进行验证.
主要成果:
- 发现增加发电机轴承跨度可以减少μWTs的总体振动.
- 将旋转器的重心转移到后轴承上,有效地减少了大多数自由度的振动.
- 一个案例研究表明,在应用了优化的设计参数后,平方根平均振动显著减少.
结论:
- 开发的数学模型为μWT动态提供了宝贵的见解,超越了纯粹的数值方法.
- 对轴承跨度和转子CG位置的战略调整有效地减轻了μWTs中的振动.
- 这些发现为设计人员提供了实际指导,以提高微型风力轮机的性能和延长其运行寿命.
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