Current Status and Prospects of High-Speed Direct-Drive Power Generation Technology  

作　　者：JIANG Chenglong YIN Zhao ZHANG Hualiang ZHOU Peijian LIU Yu CHENG Kun XU Yujie CHEN Haisheng 

机构地区：[1]College of Metrology Measurement and Instrument,China Jiliang University,Hangzhou 310018,China [2]Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China [3]Nanjing Institute of Future Energy System,Nanjing 211135,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]University of Chinese Academy of Sciences,Nanjing 211135,China

出　　处：《Journal of Thermal Science》2024年第6期2097-2116,共20页热科学学报（英文版）

基　　金：supported by the National Major Science and Technology Project (2019-Ⅱ-0009-0029);the 2022 Jiangsu Province Carbon Peak Carbon Neutral Science and Technology Innovation Special Major Innovation Carrier Construction Project (BM2022001);the National Natural Science Foundation of China(52202324);supported by the Hundred Talents Program of the Chinese Academy of Sciences;the Nanjing Future Energy System Research Institute independently deploys research projects (E3550101)

摘　　要：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 CO_(2) 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.

关 键 词：TURBINE high speed generator structural design high speed bearings axial force adjustment 

分 类 号：TM61[电气工程—电力系统及自动化]