Offshore direct drive high-temperature superconducting(HTS)wind turbine generators,a key application of superconductors in the energy sector,are entering a phase of commercial opportunity.In the wind power industry,on...Offshore direct drive high-temperature superconducting(HTS)wind turbine generators,a key application of superconductors in the energy sector,are entering a phase of commercial opportunity.In the wind power industry,one clear trend is the increasing power rating of units:current models exceed 15 MW,with over 20 MW generators emerging.For such high-power units,the high power density of superconducting generators minimizes mass and material usage,thereby achieving a higher power-to-weight ratio.Beyond power scaling,another trend is the deployment of wind turbines in deep waters to tap into more abundant wind resources and reduce the need for onshore land;however,operating expenditure(OpEx)in deep waters drives increased demand for reliability.HTS generators operate without a gearbox,offering a reliability advantage-especially critical in deep waters subject to multiple excitations and strong dynamic loads.As a result,modular direct drive HTS generators are increasingly becoming the preferred choice for this scenario.Modularization-dividing the generator's rotor and stator into symmetrical sectors and assembling them at the end of the production chain-facilitates manufacturing,transportation,installation,and replacement.Notably,the price of HTS tape has been declining lately,a trend driven by the surge in compact magnetic confinement fusion reactors.This reduction lowers the capital expenditure(CapEx)of superconducting generators,enhances market competitiveness,and underpins research into high-magnetomotive force(MMF)machine designs.Nevertheless,HTS generator design and manufacturing are system-level endeavors,involving trade-offs across electromagnetic,thermal,and mechanical aspects that demand targeted optimization and rigorous reliability testing.展开更多
基金funding from the National Natural Sci-ence Foundation of China(Project No.52037008)the National Natural Science Foundation of Shanghai(Project No.20ZR1425800).
文摘Offshore direct drive high-temperature superconducting(HTS)wind turbine generators,a key application of superconductors in the energy sector,are entering a phase of commercial opportunity.In the wind power industry,one clear trend is the increasing power rating of units:current models exceed 15 MW,with over 20 MW generators emerging.For such high-power units,the high power density of superconducting generators minimizes mass and material usage,thereby achieving a higher power-to-weight ratio.Beyond power scaling,another trend is the deployment of wind turbines in deep waters to tap into more abundant wind resources and reduce the need for onshore land;however,operating expenditure(OpEx)in deep waters drives increased demand for reliability.HTS generators operate without a gearbox,offering a reliability advantage-especially critical in deep waters subject to multiple excitations and strong dynamic loads.As a result,modular direct drive HTS generators are increasingly becoming the preferred choice for this scenario.Modularization-dividing the generator's rotor and stator into symmetrical sectors and assembling them at the end of the production chain-facilitates manufacturing,transportation,installation,and replacement.Notably,the price of HTS tape has been declining lately,a trend driven by the surge in compact magnetic confinement fusion reactors.This reduction lowers the capital expenditure(CapEx)of superconducting generators,enhances market competitiveness,and underpins research into high-magnetomotive force(MMF)machine designs.Nevertheless,HTS generator design and manufacturing are system-level endeavors,involving trade-offs across electromagnetic,thermal,and mechanical aspects that demand targeted optimization and rigorous reliability testing.
