CFP China reached a milestone with advancing efforts to build a solar power station in space in 2028, aiming to convert sunlight in outer space into electrical supply to drive the satellites in orbits or transmit power back to Earth, according to China's spacecraft maker China Academy of Space Technology (CAST).
According to Li, the future space power station will likely have a scale of more than 10,000 tons, and to reach that goal, China needs to grasp the capability of wireless power transmission technology, which is a must and the greatest challenge in the process.
In 2015, Northrop Grumman Corporation in the U.S. sponsored a $17.5 million research over three years for the development of the Space Solar Power Initiative (SSPI). Duan proposed in late 2013 to kick off China's own initiative and then his team put forward China's tech approach of SSPS called OMEGA.
Taking solar power to a whole new level. China is looking to space for solar energy, unlike NASA, which shelved the idea due to its complexity and cost two decades ago. According to South China Morning Post, China is slated to begin the first phase of an ambitious solar power plant development in 2028, two years ahead of the original schedule.
China’s space solar power plant plan. Source: Dong Shiwei, National Key Laboratory of Science and Technology on Space Microwave, China Academy of Space Technology in Xian China wants to construct the massive orbiting solar-power space station in four stages.
In order to drive the pair of 27-meter wings and rotate them smoothly towards the sun, the device acts as a central power house to both the wings and the station. China's dual axis solar array drive assembly also acts as an energy conversion and transmission center to provide sufficient energy for the operation of the space station.
China space station: First bi-axial solar array drive assembly
With an effective power generation area of 110 square meters from each of the solar wings, the device is the key to convert photoelectric at a rate of 30 percent, generating an average of over 430 kilowatt hours of power daily – enough for the consumption of an ordinary household in Beijing for one and a half months.
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The SSPS research team in China Academy of Space Technology (CAST) proposed a multi-rotary joint concept (MR-SPS, shown in Fig. 1) which decomposed the high-power conductive rotary joint into a number of low-power conductive rotary joints so that it can strengthen the expansibility of the generator array and avoid the single point of failure by …
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