Magnetic gears with an integrated permanent magnet machine provides advantages within the field of wind turbine drive trains compared to both mechanically geared generators due to non physical contact between rotors as well as direct driven generators where size and weight can be reduced. Theoretical and practical benchmark of the technology against commercial direct drive generators with regards to material use and performance is yet to be found in the literature. In this article, a magnetically geared permanent magnet generator is designed with operational specifications based on a commercial 3.5 kW permanent magnet generator designed for direct drive wind turbines. A demonstrator is fabricated and the design models are validated experimentally. Performance and material use for both the demonstrator and the direct drive generator is mapped. The experimentally verified results are used for benchmarking and the comparison shows promising results as both size and weight is significantly reduced for similar performance. It is also found that the material consumption is reduced, and contrary to popular belief, the use of magnet material in the magnetically geared machine is actually less than that of the benchmark generator.

中文翻译：

---

用于风力发电的磁齿轮永磁发电机的设计、制造、测试和基准测试

由于转子之间的非物理接触以及可以减小尺寸和重量的直接驱动发电机，与机械齿轮发电机相比，具有集成永磁电机的磁齿轮在风力涡轮机传动系统领域具有优势。在材料使用和性能方面，该技术与商用直驱发电机相比的理论和实践基准尚未在文献中找到。在本文中，磁齿轮永磁发电机的运行规范基于专为直驱风力涡轮机设计的商用 3.5 kW 永磁发电机。制造了一个演示器，并通过实验验证了设计模型。对演示器和直接驱动发电机的性能和材料使用进行了映射。实验验证的结果用于基准测试，比较显示出有希望的结果，因为对于类似的性能，尺寸和重量都显着减小。还发现材料消耗降低，与普遍看法相反，磁齿轮电机中磁材料的使用实际上比基准发电机少。