"Daily Project" obtained important stages of achievements in the full -link, full system space of the full -link, full system space of Duan Baoyan team, and the ground verification system of the solar power station of the solar power station through the acceptance system

On June 5, 2022, good news from the "day -by -day" research team led by Academician Duan Baoyan of Xi'an University of Electronic Science and Technology came. The world's first full -link and full system space solar power plant ground verification system successfully passed the acceptance of expert groups. This verification system breakthroughs and verifies many key technologies such as high -efficiency concentration and photoelectric conversion, microwave conversion, microwave transmission and waveform optimization, microwave beam pointing and control, microwave receiving and rectification, and dexterous mechanical structure design.

On the morning of the same day, after in -depth and meticulous on -site inspections, consulting and exchanges, etc., the evaluation team composed of Academician Wu Yirong as the team leader and three other academicians, including three other academicians, agreed:

The results of this project are generally at the international advanced level, of which the main technical indicators such as Omega Optical Mechanical and Electrical Integration Design, Microwave power wireless transmission efficiency of 55 -meter transmission distance, microwave beam collection efficiency, concentration and antenna, and other major technical indicators Line internationally internationally. This result is supportive and leading in the development of the theory and technology of the next generation of microwave power wireless transmission technology and space power stations in my country, and its application prospects are very broad.

Full link Full system ground verification system verified the complete process

At the end of 2013, with a joint proposal entitled "Suggestions on the Research on the Research on Key Technology of my country's Space Power Station as soon as possible", the joint proposal of academicians was approved, and the research on the China Space Power Power Station began to enter the fast track.

In 2014, 16 ministries and commissions including the Ministry of Industry and Information Technology, the Development and Reform Commission, and the Ministry of Science and Technology organized more than 130 experts from China to carry out the argumentation work for nearly a year. ", Provided an important guidance for my country's key technical research decision -making decision -making of space power stations.

At the same time, Academician Baoyan's team of Xi'an University of Electronic Science and Technology proposed the design plan of Omega space solar power station. Compared with the Alpha design scheme in the United States, this design scheme has three advantages: the difficulty of control is reduced, the heat dissipation pressure is reduced, and the performance ratio (the power generated by the unit quality of the heaven system) increases by about 24%.

"Space solar power plant research is currently a hot spot in the world," said Academician Duan Baoyan. It is understood that since the idea of ​​building a space power station in 1968, Peter Graze, the American National Aerospace Administration (NASA) and the Ministry of Energy's "1979SPS benchmark system" jointly launched, the "space launched in Europe launched in Europe Research on systems, concepts, structure and technology "of exploration and utilization.

Since 2012, with the support of the NASA Innovation Concept project, Professor John Mankins proposed the SSPS-Alpha solution of "Any Large Large-scale Phaseway Space Solar Power Station". After that, the United States Nogg signed a total of $ 17.5 million in space solar power plant technology research and development contracts with California University of Technology. At the same time, scientific researchers in India, Russia, Britain, and France have also continued to make efforts in the research field of space solar power stations.

At present, in the development roadmap of many strong technology power, Japan has later lived and has become one of the most cutting -edge researchers in the world. In the world, they officially included space solar power stations in the national aerospace plan, and also proposed the concept of unique distributed rope systems of solar power stations, formulating the three-stage vision development roadmap with "research-research and development-commerce". In 2015, Japanese researchers conducted a 55 -meter -distance microwave wireless transmission experiment, which verified the transmission under the 5.8 GIH frequency, solid -state source, and phase control array system. The transmission efficiency was 9.88%. In terms of microwave wireless energy transmission technology Temporarily leading the world's leading position.

"But this kind of test system in Japan is still not a full link, and the process of lacking from light to electricity. Their technical advantages are concentrated in the link from transmitting antenna to receiving antenna." Duan Baoyan said. The ground verification system built is a full -link and full system, which realizes the complete process from Japan, concentration, photoelectric conversion, microwave transmission to microwave receiving rectification. "

The successful test time has been earlier than the original technical route node for nearly three years in advance

If you have participated in the research work of the Solar Energy Power Station of China through the suggestion of academicians in 2013, this year is exactly the 10th year of the Western Power Research Team led by Academician Duan Baoyan to participate in this scientific research project. Over the past 10 years, the research team has carried out the research work of space solar power stations steadily from the plan proposal, theoretical analysis, simulation computing, indoor transmission verification, outdoor ground verification, and steadily move forward step by step.

In 2017, the State Establishment of Space Solar Power Station Promotion Committee. One year later, the "Shaanxi Provincial Space Power Power Station System Key Laboratory" was listed in Western Electric, the first key laboratory in the field of space power station in my country. The Solar Special Committee of the China Aerospace Society was established in 2021.

On December 23, 2018, at the launching ceremony and summit forum of the "Space Solar Power Station System Project", the research project of the Western Power Space Solar Power Station was named "Daily Project". After successfully completing the theoretical research calculation and indoor transmission capacity verification, the Duan Baoyan research team opened the outdoor ground verification challenge of the "day -by -day" space power station.

Omega-SSPS ground test verification system

The "Daily Engineering" Space Solar Power Station ground verification system is located in the West Power South Campus. Its support tower is a steel structure of 75M high. The verification system mainly includes five major subsystems: Omega concentration and photoelectric conversion, power transmission and management, radio frequency transmission antenna , Receive and rectifier antennas, control and measurement. The working principle is first to determine the angle of the consecration mirror that needs to be tilted according to the height of the solar. After receiving the sunlight reflected by the consecration, the photovoltaic battery array located in the center of the consecration mirror is converted into DC electricity energy. Subsequently, through the power management module, the electrical energy obtained by the four concentration systems converted into the middle transmitting antenna. After the module and other modules such as an oscillator and amplifier, the power was further converted into a microwave, and the form of wireless transmission was transmitted to the receiving antenna. Finally, the receiving antenna converts the microwave rectification into DC power again to supply the load. After more than a thousand days and nights, the "daily project" verification system's establishment of the subsystems and the hardships and pains of re -re -re -re -failure after the failure, all condensed in such a moment below, as well as the members of the project team team, Perseverance.

One night, it was early in the morning. A elderly next to the New Science and Technology Building of the North Campus was carrying two young students to carry a 200 kg antenna to the entrance of the experimental building. The antenna is too heavy and there are too few people. As a result, the elderly went to the door of the building to "catch Zhuang Ding". In the laboratory of this building, thousands of students are conducted every day, and it is not uncommon to study in the early morning. The elders soon "caught" a few "Student Zhuang Ding" who had just stepped out of the laboratory. When everyone raised the antenna, the students found that the elderly around them were not others. It was Academician Duan Baoyan, the chief scientist of the "day by day".

"Engaging in scientific research, especially our engineering projects, need to do it in person, actual operation, and running the scene again and again. It is not necessary to simulate on the computer." Academician Duan Baoyan repeatedly emphasized. In the past three years, the ground verification system has set up a tackling stage, Duan Baoyan and the team members have the latest record of the night at six in the morning, and more than once. One of the most recently occurred in April 2022. The data of the students in a test must not be satisfactory. He accompanied the students all night to 6 o'clock the next morning. After returning home to simply wash, the car who sent him to another academic seminar had been waited downstairs.

"Calculating simulation, installation and debugging, in fact, this is nothing. Sometimes the problems we encounter are not like doing research at all." Professor of Young Zhang Yiqun is one of the main members of the "day by day" project team. A trivial matter encountered in daily work. Although this incident has little to do with solving scientific research problems, it records the hardships of scientific research from another side.

One day late at night, the weather forecast showed that a heavy rain would arrive in a few hours. Just after measuring the accuracy of the concentrated surface at the test site of the South Campus, Zhang Yiqun was planning to recycle and move back to the warehouse when the air system was recycled and moved back to the warehouse. There are many factors in structure and control. After an hour of no fruitful attempt, seeing Wuyun densely, he dialed WeChat videos of Professor Chen Guangda, another team backbone of the 20 -mile northern campus. Another hour of remote discussion, no fruit. At this time, it was two in the morning. A car drove out of the south gate of the North Campus. Half an hour later, Chen Guangda appeared beside Zhang Yiqun, who was sweating. At this moment, the thunder rolled, and before the last moment when the heavy rain arrived, they landed the air system perfectly on the ground to support the transportation structure, and moved the system back to the warehouse.

Professor Zhang Yiqun is measured one by one in the suspension state.

Many of the great achievements are actually accumulated by a little bit of hard work. The ground verification system of the "day by day" solar power station is to be driven by Academician Duan Baoyan personally, and the project team has worked with hundreds of teachers and students sincerely. On June 5, 2022, the full -link and full system space solar power plant ground verification system passed the acceptance system. This time was nearly three years earlier than the original technical route node.

The project is playing the role of "Technical Tool Pack" and "Talent Performing Corps"

Space solar power plant research is a "Manhattan project" in the energy field, and there are many technical fields involved. As the chief scientist of the "Daily Project", Academician Duan Baoyan knows that the transmission between heaven and earth requires the continuation of several generations. Duan Baoyan said: "For example, the transmission of heaven and earth is like a common wealth. That is the ultimate goal. It must be achieved by many people's efforts for many years, but we can start researching from now on. The advantage of doing this is to make some 'people "get rich first."

In November 2020, the party committee secretary Zha Xianyou took a group photo with the representative of the 4th National Wireless Energy Academic Conference

Duan Baoyan introduced that these "first -richer" people '"that first enjoyed the dividend of the space power station in the space can be divided into two categories:

The first is the various types of aircraft operated by space and mobile devices running on the ground. Duan Baoyan imagined that the space solar power station can become the "space charging pile" in the orbit in the future. He pointed out that small and medium -sized satellites need to carry a huge solar windsurfing for charging, but its efficiency is low because the satellites are unable to charge when the satellite runs to the earth shadow area. If there is a "space charging pile", satellites no longer need huge sunroof, just receiving antennas that can be closed, just like gas stations. Daily project launch and receiving antenna

In addition, once the concept of wireless charging piles on the ground has made breakthroughs, it has broad real value in the two major areas of civilian and military. For example, it can exert power, disaster relief, disaster relief, unexpected incidents, and reduce the influence of harsh climate (typhoon intensity, direction, etc.) in remote areas. For another example, it can be directly applied to wireless power supply to military satellites, space weapons, large ships, and ground military facilities, especially in military emergency radar, flat flow aircraft, drone groups and other wireless power supply. The prospects can ensure continuous, flexible, reliable, and real -time energy supply to ensure the effectiveness and national security of military forces.

More importantly, as an educator who had been the principal of ten years, Duan Baoyan valued the role of "technical tool pack" and "talent performance field" that promoted the "day by day". He said that this research work can provide a full -link development environment for the technical fields involved in the full -link and full system space. Based on the package, the energy supply method is personalized and fine -tuned to achieve the innovative development of design.

In terms of the role of "talent performance", it can be summarized by a word that Duan Baoyan often tells students, that is, "one generation is given to a generation, one generation is stronger than the first generation." Duan Baoyan pays great attention to discovering scientific research as soon as possible among students. Once he finds it, he will be selected into the project team to exercise and cultivate carefully. In May 2022, when the doctoral student of the "Daily Project" project team, Qian Sihao successfully completed the graduation defense and was ready to go out to celebrate with his classmates. Duan Baoyan, a mentor of his scientific research potential, called him. "There are a few places to modify it again." In this way, he spent the first night after the defense passed in a special way to continue changing the paper. According to statistics, in the "day -by -day project" project team, the proportion of scientific researchers in the post -80s and post -90s has reached 61%. In the running -in of multiple subsystems, they have gradually grown into all -around talents with theoretical skills and engineering levels.

Next, the research team led by Academician Duan Baoyan, based on the one -to -one transmission that has been realized, will be put into the exploration of microwave high -power wireless transmission.

related information:

Space solar power plant. Space Solar Power Station English abbreviation SSPS (Space Solar Power Station) has condensed the most intelligent thinking and efforts of the worst brain cells on the planet for more than half a century. To put it simply, it is mainly composed of three parts: "sending", "send" and "collection". First of all, the solar energy is converted into electrical energy through large solar cell arrays in space, and then the electrical energy is converted into a microwave, and then the energy is transmitted to the receiving antenna through the microwave transmitting antenna. Essence In a word, this is a power generation system that collects solar energy on the earth's rail and transmits wirelessly to the receiving antenna.

Omega Space Solar Power Station solution. The Omega scheme uses the characteristics of the spherical concentrator line focusing domain to design the concentor as a radonist with any axis symmetrical, and use the line feedback to focus. Through the preliminary analysis of the microwave Filter field theory, the research team calculated the scale of the collection and hair antenna system, and the relevant system parameter indicators were estimated. In addition, a wireless coupling method is designed for energy transmission management structure. The DC electricity obtained by photoelectric conversion can be sent to high -power microwave transmission antennas by transmitting cables. The launch antenna is connected to the "North and South Pole" area of ​​the main reflector through a large span adjustment cable, and the quality of the connection structure can be greatly reduced.

The three innovations of the ground verification system of the Omega Space Solar Power Station. The first is to propose an innovative design plan for Omega Space Power Power Station (SSPS-OEGA), including: distributed design of concentration and microwave systems, "spherical-line focus" concentration mode, etc., which can provide key to the future construction space solar power station in my country Technical Support. The second is to establish a multi -physical field coupling theory model, revealing the impact mechanism of the complex application environmental factors on the efficiency of wireless transmission of microwave power, and proposed a system design theory and method based on the theoretical model and influence mechanism of field coupling. The development has laid the theoretical foundation. The third is to break through and verify many key technologies such as high -efficiency concentration and photoelectric conversion, microwave conversion, microwave transmission and waveform optimization, microwave beam pointing and control, microwave receiving and rectification, and high -precision mechanical structure design and manufacturing. Microwave beams Main technical indicators such as collecting efficiency, microwave power wireless transmission efficiency, and performance ratio have reached the international leading level.

(Special writing: Guan Hongcai)

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