The concept of a space solar power station(SSPS)was proposed in 1968 as a potential approach for solving the energy crisis.In the past 50 years,several structural concepts have been proposed,but none have been sent in...The concept of a space solar power station(SSPS)was proposed in 1968 as a potential approach for solving the energy crisis.In the past 50 years,several structural concepts have been proposed,but none have been sent into orbit.One of the main challenges of the SSPS is dynamic behavior prediction,which can supply the necessary information for control strategy design.The ultra-large size of the SSPS causes difficulties in its dynamic analysis,such as the ultra-low vibration frequency and large fexibility.In this paper,four approaches for the numerical analysis of the dynamic problems associated with the SSPS are reviewed:the finite element,absolute nodal coordinate,foating frame formulation,and structure-preserving methods.Both the merits and shortcomings of the above four approaches are introduced when they are employed in dynamic problems associated with the SSPS.Synthesizing the merits of the aforementioned four approaches,we believe that embedding the structure-preserving method into finite element software may be an effective way to perform a numerical analysis of the dynamic problems associated with the SSPS.展开更多
针对多旋转关节空间太阳能电站(Space Solar Power Station,SSPS),提出一种环形拓扑的电力系统架构。基于功率分层准则对SSPS电力拓扑架构进行设计,提出U1~U7共7个层级、母线电压5000V、功率等级为MW的太阳能电站电力系统。针对分层架...针对多旋转关节空间太阳能电站(Space Solar Power Station,SSPS),提出一种环形拓扑的电力系统架构。基于功率分层准则对SSPS电力拓扑架构进行设计,提出U1~U7共7个层级、母线电压5000V、功率等级为MW的太阳能电站电力系统。针对分层架构中多太阳电池阵子阵并联(U6层),提出分层功率平衡统一控制策略,对MPPT控制、MPPT控制+稳定直流母线电压混合控制、MPPT算法+下垂稳定直流母线电压混合控制三种控制方法开展仿真分析。结果表明,提出的基于虚拟阻抗的下垂控制策略可以有效调节、分配功率,解决了空间发电站母线电压无法稳定的问题。展开更多
现有关于空间太阳能电站(Space Solar Power Station,SSPS)轨道动力学的研究中,均将其放置于地球静止轨道(Geostationary Orbit,GEO),然而这并非最优的工作轨道。文章提出了一种优于GEO的地球同步拉普拉斯(Geosynchronous Laplace Plane...现有关于空间太阳能电站(Space Solar Power Station,SSPS)轨道动力学的研究中,均将其放置于地球静止轨道(Geostationary Orbit,GEO),然而这并非最优的工作轨道。文章提出了一种优于GEO的地球同步拉普拉斯(Geosynchronous Laplace Plane,GLP)轨道。首先,建立了轨道运动模型及影响轨道运动的摄动模型,包括地球非球形引力摄动、日月引力摄动、太阳光压力摄动及微波反冲力摄动;然后,提出了评估空间太阳能电站轨道的3个指标:接收功率、轨道适用性和安全性,并据此分析了GLP轨道相对于GEO的优势。最后,给出了数值仿真算例。结果表明:在发电功率大致相同且满足供电需求的情况下,工作在GLP上的SSPS每年大约能节省用于轨道保持的燃料36 453.4kg。展开更多
为了减少热带气旋(TC)灾害,针对空间太阳能电站(SSPS)可用于主动调控热带气旋的创新应用,文章从美国气象学家Ross N. Hoffman已做的数值模拟出发,初步探讨了用空间太阳能电站调控热带气旋的三大关键技术。研究综述结果可概括为三大关键...为了减少热带气旋(TC)灾害,针对空间太阳能电站(SSPS)可用于主动调控热带气旋的创新应用,文章从美国气象学家Ross N. Hoffman已做的数值模拟出发,初步探讨了用空间太阳能电站调控热带气旋的三大关键技术。研究综述结果可概括为三大关键技术:针对TC调控数值模拟技术的有效性和准确性,SSPS主流设计的微波热辐射系统,激光诱导云播种系统。研究结果说明SSPS调控TC可行且能达到如下目标:减少灾害损失;降低数万人痛苦;发电。展开更多
基金supported by the National Natural Science Foundation of China(12172281,11972284,11672241,11432010,and 11872303)Fund for Distinguished Young Scholars of Shaanxi Province(2019JC-29)+2 种基金Foundation Strengthening Program Technical Area Fund(2021-JCJQ-JJ-0565)Fund of the Science and Technology Innovation Team of Shaanxi(2022TD-61)Fund of the Youth Innovation Team of Shaanxi Universities.
文摘The concept of a space solar power station(SSPS)was proposed in 1968 as a potential approach for solving the energy crisis.In the past 50 years,several structural concepts have been proposed,but none have been sent into orbit.One of the main challenges of the SSPS is dynamic behavior prediction,which can supply the necessary information for control strategy design.The ultra-large size of the SSPS causes difficulties in its dynamic analysis,such as the ultra-low vibration frequency and large fexibility.In this paper,four approaches for the numerical analysis of the dynamic problems associated with the SSPS are reviewed:the finite element,absolute nodal coordinate,foating frame formulation,and structure-preserving methods.Both the merits and shortcomings of the above four approaches are introduced when they are employed in dynamic problems associated with the SSPS.Synthesizing the merits of the aforementioned four approaches,we believe that embedding the structure-preserving method into finite element software may be an effective way to perform a numerical analysis of the dynamic problems associated with the SSPS.
文摘针对多旋转关节空间太阳能电站(Space Solar Power Station,SSPS),提出一种环形拓扑的电力系统架构。基于功率分层准则对SSPS电力拓扑架构进行设计,提出U1~U7共7个层级、母线电压5000V、功率等级为MW的太阳能电站电力系统。针对分层架构中多太阳电池阵子阵并联(U6层),提出分层功率平衡统一控制策略,对MPPT控制、MPPT控制+稳定直流母线电压混合控制、MPPT算法+下垂稳定直流母线电压混合控制三种控制方法开展仿真分析。结果表明,提出的基于虚拟阻抗的下垂控制策略可以有效调节、分配功率,解决了空间发电站母线电压无法稳定的问题。
文摘现有关于空间太阳能电站(Space Solar Power Station,SSPS)轨道动力学的研究中,均将其放置于地球静止轨道(Geostationary Orbit,GEO),然而这并非最优的工作轨道。文章提出了一种优于GEO的地球同步拉普拉斯(Geosynchronous Laplace Plane,GLP)轨道。首先,建立了轨道运动模型及影响轨道运动的摄动模型,包括地球非球形引力摄动、日月引力摄动、太阳光压力摄动及微波反冲力摄动;然后,提出了评估空间太阳能电站轨道的3个指标:接收功率、轨道适用性和安全性,并据此分析了GLP轨道相对于GEO的优势。最后,给出了数值仿真算例。结果表明:在发电功率大致相同且满足供电需求的情况下,工作在GLP上的SSPS每年大约能节省用于轨道保持的燃料36 453.4kg。
文摘为了减少热带气旋(TC)灾害,针对空间太阳能电站(SSPS)可用于主动调控热带气旋的创新应用,文章从美国气象学家Ross N. Hoffman已做的数值模拟出发,初步探讨了用空间太阳能电站调控热带气旋的三大关键技术。研究综述结果可概括为三大关键技术:针对TC调控数值模拟技术的有效性和准确性,SSPS主流设计的微波热辐射系统,激光诱导云播种系统。研究结果说明SSPS调控TC可行且能达到如下目标:减少灾害损失;降低数万人痛苦;发电。