Pub Date : 2025-09-01DOI: 10.1016/j.sspwt.2025.09.001
Shuai Liu, Han Xiong, Huaiqing Zhang
Microwave wireless power transmission (MWPT) is a promising solution to future energy challenges, exhibiting strong potential in space-based solar power stations, unmanned aerial vehicle endurance extension, and powering Internet of Things (IoT) devices. However, conventional microwave power receivers (MPRs) suffer from issues such as low efficiency, structural complexity, and polarization sensitivity. Electromagnetic metasurfaces, with their ability to precisely manipulate electromagnetic waves, provide a new direction for overcoming these bottlenecks. This paper is a review that focuses on the series of research achievements made by our research team in the area of high-efficiency wireless power reception based on electromagnetic metasurfaces. Key innovations are introduced, including gradient-index metasurfaces, reflective phase-gradient metasurfaces, dual-matching strategies, polarization-insensitive designs, near-field reception structures, and direct-feed architectures. These methods enable effective conversion of incident waves into surface waves with precise energy concentration, significantly improving conversion efficiency from plane waves to surface waves, as well as RF-to-DC conversion efficiency. Meanwhile, the system architecture is greatly simplified, providing a robust foundation for the practical application of MWPT systems.
{"title":"Advances in high-efficiency wireless power reception using electromagnetic metasurfaces","authors":"Shuai Liu, Han Xiong, Huaiqing Zhang","doi":"10.1016/j.sspwt.2025.09.001","DOIUrl":"10.1016/j.sspwt.2025.09.001","url":null,"abstract":"<div><div>Microwave wireless power transmission (MWPT) is a promising solution to future energy challenges, exhibiting strong potential in space-based solar power stations, unmanned aerial vehicle endurance extension, and powering Internet of Things (IoT) devices. However, conventional microwave power receivers (MPRs) suffer from issues such as low efficiency, structural complexity, and polarization sensitivity. Electromagnetic metasurfaces, with their ability to precisely manipulate electromagnetic waves, provide a new direction for overcoming these bottlenecks. This paper is a review that focuses on the series of research achievements made by our research team in the area of high-efficiency wireless power reception based on electromagnetic metasurfaces. Key innovations are introduced, including gradient-index metasurfaces, reflective phase-gradient metasurfaces, dual-matching strategies, polarization-insensitive designs, near-field reception structures, and direct-feed architectures. These methods enable effective conversion of incident waves into surface waves with precise energy concentration, significantly improving conversion efficiency from plane waves to surface waves, as well as RF-to-DC conversion efficiency. Meanwhile, the system architecture is greatly simplified, providing a robust foundation for the practical application of MWPT systems.</div></div>","PeriodicalId":101177,"journal":{"name":"Space Solar Power and Wireless Transmission","volume":"2 3","pages":"Pages 143-151"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An all-metal microstrip antenna with high gain, high efficiency, and heat-sinking capability is proposed for wireless power transmission (WPT). The antenna structure consists of a radiating patch and a cylindrical metal ring that shorts the patch to the ground. The metal ring also supports the patch so that the microstrip structure can be substrate-free, which improves the antenna’s radiation efficiency. The geometric parameters of the supportive metal ring are optimized with simulation results showing that a gain of 10.0 dBi and a radiation efficiency higher than 99.3% can be achieved. A prototype of the antenna is fabricated, assembled, and tested. The measurement results agree with the simulation very well. Moreover, simulation results show that the proposed dielectric-free structure serves as a heat sink when a power amplifier is integrated on the backside of the antenna ground. The heat from the amplifier can be effectively conducted to the radiating patch via the metal ring, which considerably reduces the temperature of the amplifier. The heat-sinking capability of the antenna is measured with a surface-mount ceramic chip as the heat source. The chip’s temperature with a thermal dissipation rate of 1 W is reduced from 80.1 °C to 66.7 °C without additional cooling devices. With the proposed antenna integrated with a class-F power amplifier, an active gain of 21.2 dBi is measured in the wireless power transmission experiment.
{"title":"An all-metal heatsink microstrip antenna for wireless power transmission","authors":"Jingjing Yang, Xin Wang, Huaiqing Zhang, Wenxiong Peng","doi":"10.1016/j.sspwt.2025.08.002","DOIUrl":"10.1016/j.sspwt.2025.08.002","url":null,"abstract":"<div><div>An all-metal microstrip antenna with high gain, high efficiency, and heat-sinking capability is proposed for wireless power transmission (WPT). The antenna structure consists of a radiating patch and a cylindrical metal ring that shorts the patch to the ground. The metal ring also supports the patch so that the microstrip structure can be substrate-free, which improves the antenna’s radiation efficiency. The geometric parameters of the supportive metal ring are optimized with simulation results showing that a gain of 10.0 dBi and a radiation efficiency higher than 99.3% can be achieved. A prototype of the antenna is fabricated, assembled, and tested. The measurement results agree with the simulation very well. Moreover, simulation results show that the proposed dielectric-free structure serves as a heat sink when a power amplifier is integrated on the backside of the antenna ground. The heat from the amplifier can be effectively conducted to the radiating patch via the metal ring, which considerably reduces the temperature of the amplifier. The heat-sinking capability of the antenna is measured with a surface-mount ceramic chip as the heat source. The chip’s temperature with a thermal dissipation rate of 1 W is reduced from 80.1 °C to 66.7 °C without additional cooling devices. With the proposed antenna integrated with a class-F power amplifier, an active gain of 21.2 dBi is measured in the wireless power transmission experiment.</div></div>","PeriodicalId":101177,"journal":{"name":"Space Solar Power and Wireless Transmission","volume":"2 3","pages":"Pages 124-130"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145271041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01DOI: 10.1016/j.sspwt.2025.02.003
Yingchun Du, Guanheng Fan, Dongxu Wang, Xintong Li
The scaled-model thickness cannot be reduced by the same scaling factor as the length in similitude analysis of the space solar power station (SSPS) large-scale concentrator unit, resulting one-dimensional linear distortion. Thus, the complete scaling law is invalid, established by the traditional similitude analysis, reducing the prediction accuracy. To weaken the distortion effect, a chain separate similitude analysis method is presented to establish the distortion scaling law, thereby enhancing the prediction accuracy. First, a global scaling law is obtained based on dimensional analysis. Second, distortion model is formed by introduced a distortion coefficient, which allows for the global scaling law to be chain-separated into complete and partial similitude scales. Third, two sub-models of complete similitude and partial similitude are constructed respectively to weaken the distortion effect. Then, the scaling laws are established including complete and partial similitude, respectively. On this basis, the natural frequency distortion scaling law is derived. Finally, finite element models of the concentrator unit prototype and distortion model are developed to validate the suggested method. Through simulation analysis, the large-scale prototype first-order natural frequency predicted value is 28.34 Hz, while the theoretical value is 28.32 Hz. The prediction error of the first four orders’ natural frequency for the prototype is kept within 0.4%. Results indicate the proposed method can improve the accuracy by one order of magnitude compared to the existing methods, greatly weaken the distortion effect, and effectively solve the one-dimensional linear distortion problem.
{"title":"One-dimensional linear distortion similitude research on concentrator unit for SSPS","authors":"Yingchun Du, Guanheng Fan, Dongxu Wang, Xintong Li","doi":"10.1016/j.sspwt.2025.02.003","DOIUrl":"10.1016/j.sspwt.2025.02.003","url":null,"abstract":"<div><div>The scaled-model thickness cannot be reduced by the same scaling factor as the length in similitude analysis of the space solar power station (SSPS) large-scale concentrator unit, resulting one-dimensional linear distortion. Thus, the complete scaling law is invalid, established by the traditional similitude analysis, reducing the prediction accuracy. To weaken the distortion effect, a chain separate similitude analysis method is presented to establish the distortion scaling law, thereby enhancing the prediction accuracy. First, a global scaling law is obtained based on dimensional analysis. Second, distortion model is formed by introduced a distortion coefficient, which allows for the global scaling law to be chain-separated into complete and partial similitude scales. Third, two sub-models of complete similitude and partial similitude are constructed respectively to weaken the distortion effect. Then, the scaling laws are established including complete and partial similitude, respectively. On this basis, the natural frequency distortion scaling law is derived. Finally, finite element models of the concentrator unit prototype and distortion model are developed to validate the suggested method. Through simulation analysis, the large-scale prototype first-order natural frequency predicted value is 28.34 Hz, while the theoretical value is 28.32 Hz. The prediction error of the first four orders’ natural frequency for the prototype is kept within 0.4%. Results indicate the proposed method can improve the accuracy by one order of magnitude compared to the existing methods, greatly weaken the distortion effect, and effectively solve the one-dimensional linear distortion problem.</div></div>","PeriodicalId":101177,"journal":{"name":"Space Solar Power and Wireless Transmission","volume":"2 2","pages":"Pages 65-72"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01DOI: 10.1016/j.sspwt.2025.06.002
Juqi Wang , Shumin Zhang , Teng Zhang , Jikui Liu , Gang Zhou , Jiyang Zhang , Jian Wang
The electrically charged wear debris generated inside the conductive slip ring of spacecraft not only exacerbates the wear of the ring channel but also causes distortion of the electric field, which can induce surface flashover in vacuum, seriously affecting the operational reliability of solar array panels. This study is based on the space station experimental cabin’s on-orbit technology testing platform, and it systematically investigates the wear debris migration behavior of the brush–slip ring mechanism. Through long-term on-orbit testing observations, a three-dimensional multiphysics coupling model was developed using a Monte Carlo-Finite Element joint algorithm. This model reveals the migration mechanism of wear debris under the combined effect of the electrostatic field and electron radiation field: debris without initial velocity primarily adheres to the metal ring surface; debris with initial velocity migrates towards the shield with a speed of up to 0.0136 m/s in the electrostatic field, while a small amount adheres to the side of the insulating baffle due to electric field distortion near the brush; under the electron radiation combined field, the surface potential reconstruction of the dielectric increases the local field strength to 2.2 × 108 V/m, significantly enhancing the migration trend of the debris towards the insulating baffle and causing the debris on the inner side of the shield to detach and impact the baffle. The study accurately reproduced the spatial distribution characteristics of the wear debris and revealed the discharge behavior induced by the debris through trajectory prediction models and comparison with on-orbit experimental data. This provides theoretical support for the insulation reliability design of space electromechanical products.
{"title":"Reconstruction of wear debris migration trajectory and analysis of motion characteristics in on-orbit spacecraft conductive slip rings","authors":"Juqi Wang , Shumin Zhang , Teng Zhang , Jikui Liu , Gang Zhou , Jiyang Zhang , Jian Wang","doi":"10.1016/j.sspwt.2025.06.002","DOIUrl":"10.1016/j.sspwt.2025.06.002","url":null,"abstract":"<div><div>The electrically charged wear debris generated inside the conductive slip ring of spacecraft not only exacerbates the wear of the ring channel but also causes distortion of the electric field, which can induce surface flashover in vacuum, seriously affecting the operational reliability of solar array panels. This study is based on the space station experimental cabin’s on-orbit technology testing platform, and it systematically investigates the wear debris migration behavior of the brush–slip ring mechanism. Through long-term on-orbit testing observations, a three-dimensional multiphysics coupling model was developed using a Monte Carlo-Finite Element joint algorithm. This model reveals the migration mechanism of wear debris under the combined effect of the electrostatic field and electron radiation field: debris without initial velocity primarily adheres to the metal ring surface; debris with initial velocity migrates towards the shield with a speed of up to 0.0136 m/s in the electrostatic field, while a small amount adheres to the side of the insulating baffle due to electric field distortion near the brush; under the electron radiation combined field, the surface potential reconstruction of the dielectric increases the local field strength to 2.2 × 10<sup>8</sup> V/m, significantly enhancing the migration trend of the debris towards the insulating baffle and causing the debris on the inner side of the shield to detach and impact the baffle. The study accurately reproduced the spatial distribution characteristics of the wear debris and revealed the discharge behavior induced by the debris through trajectory prediction models and comparison with on-orbit experimental data. This provides theoretical support for the insulation reliability design of space electromechanical products.</div></div>","PeriodicalId":101177,"journal":{"name":"Space Solar Power and Wireless Transmission","volume":"2 2","pages":"Pages 81-90"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01DOI: 10.1016/j.sspwt.2025.06.005
Liying Zhu , Zhigang Liu , Liang Ma , Xianrui Zeng , Weiguo Lu
Inductive coupled wireless power transfer (WPT) system transfers energy through the magnetic field. The magnetics field distribution of WPT system has significantly influence on the transmission efficiency and misalignment tolerance. This study investigates the magnetic field distribution of WPT system and presents a magnetic field distribution analytical model for WPT system. The analytical model is based on Fourier analysis method, and it can be applied in the cases of coil with air core and with Ferrite core. Furthermore, the finite element simulation model and experiment are conducted. The results of analysis, simulation and experiment are in good agreement.
{"title":"Analytical and experimental investigations of magnetic field distribution for wireless power transfer system with Ferrite core","authors":"Liying Zhu , Zhigang Liu , Liang Ma , Xianrui Zeng , Weiguo Lu","doi":"10.1016/j.sspwt.2025.06.005","DOIUrl":"10.1016/j.sspwt.2025.06.005","url":null,"abstract":"<div><div>Inductive coupled wireless power transfer (WPT) system transfers energy through the magnetic field. The magnetics field distribution of WPT system has significantly influence on the transmission efficiency and misalignment tolerance. This study investigates the magnetic field distribution of WPT system and presents a magnetic field distribution analytical model for WPT system. The analytical model is based on Fourier analysis method, and it can be applied in the cases of coil with air core and with Ferrite core. Furthermore, the finite element simulation model and experiment are conducted. The results of analysis, simulation and experiment are in good agreement.</div></div>","PeriodicalId":101177,"journal":{"name":"Space Solar Power and Wireless Transmission","volume":"2 2","pages":"Pages 110-115"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01DOI: 10.1016/j.sspwt.2025.06.003
Ze Wang , Qunhai Huo , Yuanli Lu , Lixin Wu , Xiaoqian Li , Meng Wei , Tongzhen Wei
In this paper, a decoupling equalization control strategy based on complex coupled inductors is proposed to address the control difficulties caused by compound coupled inductors in the interleaved-parallel triple-coupled inductor-based boost converter (IP-TCIBC). First, the phase inductors are uncoupled from the output filter inductors by analyzing the decoupling and denationalizing the conductance matrices of the phase inductors to realize the phase inductor decoupling. The control block diagram is simplified by correcting the independent current inner loops of the two phases to identical type I systems, based on which the voltage–current dual closed-loop control is realized by adding a common voltage outer loop and rectifying it to a type II system. MATLAB/Simulink builds the closed-loop equalization control model, and the simulation verification shows that: under the proposed control strategy, the two-phase inductor currents are completely equal, the equalization effect is good and stable, and it is not affected by the disturbance of sudden change of internal resistance. The system has strong anti-interference ability, the voltage and current response is rapid during the sudden change of the load, and the dynamic performance is superior; the output voltage is stable, the overshooting amount is small, and the recovery time is fast. The results verify the correctness and effectiveness of the control strategy and provide new ideas and methods for solving the complex coupled inductor equalization control problems in DC–DC converters.
{"title":"Research on decoupling equalization control strategy based on complex coupled inductors","authors":"Ze Wang , Qunhai Huo , Yuanli Lu , Lixin Wu , Xiaoqian Li , Meng Wei , Tongzhen Wei","doi":"10.1016/j.sspwt.2025.06.003","DOIUrl":"10.1016/j.sspwt.2025.06.003","url":null,"abstract":"<div><div>In this paper, a decoupling equalization control strategy based on complex coupled inductors is proposed to address the control difficulties caused by compound coupled inductors in the interleaved-parallel triple-coupled inductor-based boost converter (IP-TCIBC). First, the phase inductors are uncoupled from the output filter inductors by analyzing the decoupling and denationalizing the conductance matrices of the phase inductors to realize the phase inductor decoupling. The control block diagram is simplified by correcting the independent current inner loops of the two phases to identical type I systems, based on which the voltage–current dual closed-loop control is realized by adding a common voltage outer loop and rectifying it to a type II system. MATLAB/Simulink builds the closed-loop equalization control model, and the simulation verification shows that: under the proposed control strategy, the two-phase inductor currents are completely equal, the equalization effect is good and stable, and it is not affected by the disturbance of sudden change of internal resistance. The system has strong anti-interference ability, the voltage and current response is rapid during the sudden change of the load, and the dynamic performance is superior; the output voltage is stable, the overshooting amount is small, and the recovery time is fast. The results verify the correctness and effectiveness of the control strategy and provide new ideas and methods for solving the complex coupled inductor equalization control problems in DC–DC converters.</div></div>","PeriodicalId":101177,"journal":{"name":"Space Solar Power and Wireless Transmission","volume":"2 2","pages":"Pages 91-100"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01DOI: 10.1016/j.sspwt.2025.06.001
Fangjing Weng , Zhigang Liu , Kun Zhang , Yawei Wang
Superconducting technology is a potential solution for ultra-high power electrical transmission in limited size and weight, and has been feasibility demonstrated in multiple aerospace projects by NASA and ESA. For the aerospace environment with requirements for weight and volume, in high-power applications such as space solar power plants, superconducting power transmission can be used to effectively utilize stable high-energy solar radiation in space orbit, and wireless energy transmission can be used to transmit it to the ground. Faced with the demand for ultra-high power transmission within large space power stations, it is urgent to carry out research on safe and reliable ultra-high power transmission. The ”zero resistance” effect of superconducting technology can significantly reduce power loss and increase the transmission current density per unit volume, which is of great significance for solving the long-distance transmission of high-power electricity. This article discusses the current development status of second-generation high-temperature superconducting cable technology at home and abroad, as well as the feasibility analysis of its application in space solar power plant systems. It summarizes the key technologies for applying high-temperature superconducting power transmission in aerospace environments, providing reference for subsequent practical engineering design.
{"title":"Overview of high temperature superconducting power transmission system for space solar power station","authors":"Fangjing Weng , Zhigang Liu , Kun Zhang , Yawei Wang","doi":"10.1016/j.sspwt.2025.06.001","DOIUrl":"10.1016/j.sspwt.2025.06.001","url":null,"abstract":"<div><div>Superconducting technology is a potential solution for ultra-high power electrical transmission in limited size and weight, and has been feasibility demonstrated in multiple aerospace projects by NASA and ESA. For the aerospace environment with requirements for weight and volume, in high-power applications such as space solar power plants, superconducting power transmission can be used to effectively utilize stable high-energy solar radiation in space orbit, and wireless energy transmission can be used to transmit it to the ground. Faced with the demand for ultra-high power transmission within large space power stations, it is urgent to carry out research on safe and reliable ultra-high power transmission. The ”zero resistance” effect of superconducting technology can significantly reduce power loss and increase the transmission current density per unit volume, which is of great significance for solving the long-distance transmission of high-power electricity. This article discusses the current development status of second-generation high-temperature superconducting cable technology at home and abroad, as well as the feasibility analysis of its application in space solar power plant systems. It summarizes the key technologies for applying high-temperature superconducting power transmission in aerospace environments, providing reference for subsequent practical engineering design.</div></div>","PeriodicalId":101177,"journal":{"name":"Space Solar Power and Wireless Transmission","volume":"2 2","pages":"Pages 101-109"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01DOI: 10.1016/j.sspwt.2025.06.004
Xinbin Hou , Lu Zhou , Shiwei Dong , Dele Shi , Enjie Zhang , Guangda Chen , Huaiqing Zhang
The solar power satellite (SPS), first proposed by Dr. Peter Glaser in 1968, is a huge spacecraft capturing solar energy in space and supplying electric power to the electric grid on the ground. With the rapid progress of reusable launch technology and the ability to develop large-scale spacecraft, developing space solar power (SSP) is gradually becoming of great practical significance from both technical and economic perspectives. Many countries and organizations consider SSP to be one of the promising clean energy sources. Due to the huge size, immense mass and high-power of an SPS, there are still many technical challenges to achieve an SSP. There has been no scaled technology demonstration system developed in the world so far. According to various SPS development roadmaps proposed by various countries and organizations, technology demonstrations at different levels, including component level, subsystem level and system level, need to be carried out in space. Some small space demonstration missions have been carried out recently or will be carried out in the near future. According to a proposed SSP roadmap by Chinese experts, the key technologies related to SSP need to be demonstrated in space step by step, including high-power electricity generation, wireless power transmission (WPT), space super-large structure deployment, assembly and control. As the first step, the high-power electricity generation and WPT demonstration mission is presented in this paper. The mission will demonstrate high voltage electricity generation, kW-level microwave power transmission from lower earth orbit (LEO) to the ground, kW-level laser power transmission (LPT) from LEO to the ground and LPT between two spacecraft simultaneously, and validate the theoretical energy transmission efficiency chain and long-distance beam control precision, which will lay the foundation for the subsequent missions.
{"title":"The high power electricity generation and WPT demonstration mission — Proposed first step to develop space solar power","authors":"Xinbin Hou , Lu Zhou , Shiwei Dong , Dele Shi , Enjie Zhang , Guangda Chen , Huaiqing Zhang","doi":"10.1016/j.sspwt.2025.06.004","DOIUrl":"10.1016/j.sspwt.2025.06.004","url":null,"abstract":"<div><div>The solar power satellite (SPS), first proposed by Dr. Peter Glaser in 1968, is a huge spacecraft capturing solar energy in space and supplying electric power to the electric grid on the ground. With the rapid progress of reusable launch technology and the ability to develop large-scale spacecraft, developing space solar power (SSP) is gradually becoming of great practical significance from both technical and economic perspectives. Many countries and organizations consider SSP to be one of the promising clean energy sources. Due to the huge size, immense mass and high-power of an SPS, there are still many technical challenges to achieve an SSP. There has been no scaled technology demonstration system developed in the world so far. According to various SPS development roadmaps proposed by various countries and organizations, technology demonstrations at different levels, including component level, subsystem level and system level, need to be carried out in space. Some small space demonstration missions have been carried out recently or will be carried out in the near future. According to a proposed SSP roadmap by Chinese experts, the key technologies related to SSP need to be demonstrated in space step by step, including high-power electricity generation, wireless power transmission (WPT), space super-large structure deployment, assembly and control. As the first step, the high-power electricity generation and WPT demonstration mission is presented in this paper. The mission will demonstrate high voltage electricity generation, kW-level microwave power transmission from lower earth orbit (LEO) to the ground, kW-level laser power transmission (LPT) from LEO to the ground and LPT between two spacecraft simultaneously, and validate the theoretical energy transmission efficiency chain and long-distance beam control precision, which will lay the foundation for the subsequent missions.</div></div>","PeriodicalId":101177,"journal":{"name":"Space Solar Power and Wireless Transmission","volume":"2 2","pages":"Pages 73-80"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01DOI: 10.1016/j.sspwt.2025.03.004
Biao Yan, Li Qin, Siyuan Tao, Guangqiang Fang
To meet the high power supply requirements of spacecraft, the research and development direction of ultra-large flexible solar array technology has been proposed based on increasing the power generation area of solar arrays and improving the irradiation intensity of incident light. By comparing and analyzing the development status of domestic and international Z-shaped folded solar arrays, fan-shaped flexible solar arrays, and roll-out flexible solar arrays, this paper highlights the advantages of flexible solar arrays, including compact stowed volume, lightweight design, high mass-to-power ratio, and re-deployable capabilities. Furthermore, it identifies key technical challenges faced by the roll-out flexible solar arrays in practical engineering applications providing insights to support future advancements in fully flexible solar array systems and their application in major aerospace missions.
{"title":"Development and challenges of large space flexible solar arrays","authors":"Biao Yan, Li Qin, Siyuan Tao, Guangqiang Fang","doi":"10.1016/j.sspwt.2025.03.004","DOIUrl":"10.1016/j.sspwt.2025.03.004","url":null,"abstract":"<div><div>To meet the high power supply requirements of spacecraft, the research and development direction of ultra-large flexible solar array technology has been proposed based on increasing the power generation area of solar arrays and improving the irradiation intensity of incident light. By comparing and analyzing the development status of domestic and international Z-shaped folded solar arrays, fan-shaped flexible solar arrays, and roll-out flexible solar arrays, this paper highlights the advantages of flexible solar arrays, including compact stowed volume, lightweight design, high mass-to-power ratio, and re-deployable capabilities. Furthermore, it identifies key technical challenges faced by the roll-out flexible solar arrays in practical engineering applications providing insights to support future advancements in fully flexible solar array systems and their application in major aerospace missions.</div></div>","PeriodicalId":101177,"journal":{"name":"Space Solar Power and Wireless Transmission","volume":"2 1","pages":"Pages 33-42"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01DOI: 10.1016/j.sspwt.2025.03.003
Kunpeng Liu, Guanheng Fan, Dongxu Wang, Shimin Cao, Guichen Wang
As a critical subsystem in space solar power stations (SSPSs), the integrated modular structure plays a pivotal role in energy collection and transmission. Consequently, the mechanical properties of the integrated modular structure, particularly those utilizing the Miura-origami (Miura-ori) pattern, are crucial to the overall performance of SSPSs. This study explores the deployment ratio and performance of a modular flat structure based on the Miura-ori SSPS concept. A comprehensive analysis of a single module and an array of multiple interconnected modules is presented, focusing on deployment ratio and performance simulation, including the geometry model, material property, and finite element model. Additionally, it evaluates the effects of various array configurations, considering factors such as stowed volume and natural modal of the array. The findings from the simulation and evaluation provide valuable insights for optimizing the design of SSPS array structures.
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