It is intermediate to be used many chemicals.
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In order to integrate renewable energy into the Japanese national grid system and realize grid intelligence, scientists have been working on the development of compact power conversion devices with voltage/current/frequency controllable. However, to date, for power switches made of silicon and similar materials, ultra-large power conversion devices that can withstand high voltage have been a technical bottleneck in practical applications. The researchers found that the withstand voltage in vacuum is superior to the withstand voltage in solid-state semiconductors; in view of this, scientists have begun to study vacuum power switches that can provide ultra-high withstand voltage and high efficiency.
In order to utilize vacuum in power switches, researchers must first address how to use electron-emitting devices to pass current through a vacuum. In the experiment, scientists discovered that when the surface of the diamond is coated with hydrogen atoms, it is free to emit electrons. Therefore, the diamond semiconductor acts as an electron emission source in the vacuum power switch. In the switch operation experiment, the staff found that when the voltage reached 10KV, the device can normally function as a power switch. In light of this experimental result, the researchers speculate that if a vacuum power switch can withstand a voltage of 100 kV, then theoretically, a high-voltage conversion device that is one tenth of the original size can be manufactured.
With this technology, Japan can make full use of offshore wind energy to achieve efficient energy conversion in many islands in Japan, thus realizing Japan's new energy strategy. (Compiled from "High-Voltage Vacuum Power Switch for Smart Power Grids: World's First Successful Power Switch Using Diamond Semiconductor"; Translation: Wang Xian)
Abstract A study led by the Japan Science and Technology Agency (JST) recently announced that scientists from the National Institute of Advanced Industrial Technology (AIST) and National Materials Research (NIMS) have successfully developed high-voltage vacuum power switches and smoothly carried out. The test; the skill...
A study led by the Japan Science and Technology Agency (JST) recently announced that scientists from the National Institute of Advanced Industrial Technology (AIST) and National Materials Research (NIMS) have successfully developed high-voltage vacuum power switches and successfully carried out. Test; this technology utilizes diamond semiconductor materials and is currently the world's first.