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Title: Current Status and Prospects of High-Speed Direct-Drive Power Generation Technology
题目：高速涡轮直驱发电技术现状及展望
Authors: JIANG Chenglong, YIN Zhao, ZHANG Hualiang, ZHOU Peijian, LIU Yu, CHENG Kun, XU Yujie, CHEN Haisheng
作者：蒋成龙，尹钊，张华良，周佩剑，程坤，徐玉杰，陈海生
单位：中国计量大学计量测试与仪器学院；中国科学院工程热物理研究所 ；中科南京未来能源系统研究院 ；中国科学院大学 ；中国科学院大学南京学院
Journal of Thermal Science, 2024, 33(6): 2097-2116.
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摘要
Abstract: Turbine generators play a pivotal role in efficiently converting gas internal energy into electrical energy, finding extensive applications in diverse green energy and power equipment. The adoption of a high-speed direct-drive structure eliminates mechanical losses associated with the reducer between the turbine and generator, enhancing system efficiency and compactness. However, this configuration introduces challenges in design and manufacturing. This article explores the various application scenarios of high-speed direct-drive power generation systems, examining their roles in organic Rankine cycle power generation, gas turbine power generation, supercritical CO2 power generation, vehicle exhaust turbine power generation, and natural gas pressure reduction power generation. Considering the high-speed, high-pressure, high-temperature, and high-efficiency challenges in turbine power generation systems, the key technologies are reviewed including high-speed bearings, rotor dynamics, high-speed motors, high-frequency variable frequency technology, sealing technology, axial force adjustment, thermal management, turbine aerodynamic design, and system control strategies. The article further delves into the current research and development status of high-speed direct-drive power generation systems across different application scenarios. Finally, the article presents prospects for the future development of efficient, reliable and widely adaptable high-speed direct-drive generators, offering valuable insights for researchers and practitioners in the field.
摘要：涡轮发电机能够实现气体内能向电能的高效转化，广泛应用于各种绿色能源与动力装备。采用高速涡轮直驱结构可消除涡轮与发电机之间减速装置的机械损失，提升系统效率，并有效提高紧凑性，但同时也对其设计制造提出了挑战。本文首先调研了高速涡轮直驱发电系统的应用场景，分别从有机朗肯循环发电、燃气涡轮发电、超临界CO2发电、车用废气涡轮发电和天然气余压发电等领域进行介绍，然后结合涡轮发电系统在应用场景中所面临的高速、高压、高温和高效的挑战，总结出其要突破的关键技术，包括高速轴承、转子动力学、高速电机、高频变频技术、密封技术、轴向力调节、热管理、涡轮气动设计、系统控制策略等，之后介绍了不同应用场景下高速涡轮直驱发电系统的研究现状，最后对未来发展的方向提出了展望，对于开发高效、可靠、宽适应性的高速涡轮直驱发电系统具有一定指导意义。
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引用格式
JIANG Chenglong, YIN Zhao, ZHANG Hualiang, ZHOU Peijian, LIU Yu, CHENG Kun, XU Yujie, CHEN Haisheng, Current Status and Prospects of High-Speed Direct-Drive Power Generation Technology, Journal of Thermal Science, 2024, 33(6): 2097-2116.
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