Scientists in China have outlined a mission proposal for the development program of the China Academy of Space Technology Space Solar Power (SSP). It includes three solar panels, microwave power transmission and laser asset transmission. The route map predicts that this demonstration mission will be tried before 2030.
A team of researchers from China has proposed a plan for a Space Solar Power (SSP) demonstration mission.
The mission corresponds to the first step of the China Academy of Space Technology (Cast) SSP Development Roadmap, which evokes the use of a demonstration mission between 2026 and 2030.
“The most important idea of the mission is to demonstrate several of the most important technologies through a single limited mission. And these proven technologies are the nuclear -technical basis for later missions,” said the corresponding author, Xinbin Hou, against PV -Magazine. “Because these technologies are disturbing innovations, the most important thing is to demonstrate validation in space. That will make SSP more achievable in technology.”
SSPs are a potential way to generate green energy, using a spacecraft that collects solar energy and spends it to the earth, via wireless power transfer (WPT). The MPT Power Transmission (MPT) technology forms the core of the proposed mission, although it will also test laspower transmission (LPT). Both high -voltage thin film solar panels and concentrating solar panels must also be tested.
The solar panel of the mission consists of an ultra-light, thin film solar panels of 10 kW with gallium arsenide (mesh) solar cells that have efficiency of more than 30%. The Array of 35 M2 contains three sections: a high -voltage array that generates 1 kW/500 V power for demonstration purposes; a middle voltage solar that generates approximately 5 kW/100 V electricity to power the MPT and LPT loading system and the platform bus; And Pseudo Solar Array is used to simulate the structural characteristics of the panel. In addition, a concentration solar panel with an opening of 2.4 m diameter is also used, allowing the total collected solar energy to reach 6.18 kW.
Image: China Academy of Space Technology, Space Solar Power and Wireless Transmission, CC by 4.0
The MPT system includes a sub -system of the microwave transmitters, a bundle control system and a receiving sub -system. A 2m x 2 m antenna is designed for the demonstration system, with a work frequency of 5.8 GHz. Approximately 4 kW microwave power is planned to be transferred to a receiving sub-system on Earth, which travels a distance of 424-600 km. The receiving sub -system consists of a straight, a bundle direction measurement system and a pilot signal channel.
On the other hand, the LPT has two demonstrated use cases, one in which energy is transferred to the ground while it is transferred to a disadvantaged space in the other. “The LPT system consists of a laser sub-system, a laser emitting and bundle steering sub-system and a receiving sub-system. According to the mission target, the laser power sent will be 1 kW, the transmission distance will be 10 km-50 km in space and more than 400 km to the ground. The 1064 NM Optical Laser has been selected.
“We will continue the follow -up research into the subsequent missions, including system design and important technologies R&D. Of course we also give to use how these innovative technologies in other areas,” concluded Hou.
The mission proposal was presented in “The High Power Electricity Generation and WPT demonstration Mission – proposed the first step to develop space solar energy“Published in Space solar energy and wireless transmission. Scientists from the China Academy of Space Technology, China’s Shandong Institute of Aerospace Electronic Technology, Shanghai Institute of Aerospace System Engineering, Xidian University and Chongqing University have developed the plan.
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