Transmission of electricity: new achievements and prospects
Once a person did not even imagine that inthere is electricity, but now, when an accident occurs at a local substation, it is difficult for him to stand for several hours until the failure is rectified. People have long been accustomed to large transformers, poles and high-voltage lines, cords, cables and sockets and have not paid attention to them for a long time. All this is so firmly embedded in our consciousness that we do not even think that the transmission of electricity can happen somehow in a different way. Fortunately, among us there are geniuses who do not give up hope to invent more advanced and perfect technologies, and constant persistence and experiments have allowed to get very interesting results.
Single-wire power transmission
In 1990 the Russian engineer S. Avramenko conducted a series of successful experiments, which resulted in a three-meter single-wire line, he managed to transfer electricity, which would be enough to work a load of 1.3 kW. The installation itself consisted of a generator operating at a frequency of 3-15 kHz, and a step-up transformer. During the test, the inventor left one end of the secondary winding of the transformer free, and to the second connected a load consisting of a transmission line with a diode bridge and a conventional incandescent lamp. There were also variants when the diode bridge was replaced by two diodes connected in the opposite direction. Subsequently, such a scheme called the fork Avramenko.
The most interesting circumstance of the experimentswas that the transmission of electricity, and to be precise, its power, depended little on the resistance of the conductor. Clear scientific explanation for this fact yet, but imagine what prospects promise such superconductivity to mankind! After all, instead of a copper wire it will be possible to use water, and earth, and even plastic, that is, any conductor, regardless of its resistance. Today, the works of Avramenko and his colleagues are of great interest to foreigners, and the invention itself is marked by the gold medal of N. Tesla and the golden medal of the Brussels Salon of Innovations.
Transmission of energy by air
High conductivity is good, but lack ofwires even better. Apparently, scientists came to this conclusion all over the world, for which Tesla's experiments inspired a new discovery. Nowadays, the wireless transmission of energy is gradually shifting from a science fiction to a real reality. So, Intel in August 2008 at the IDF forum introduced its new project - WiTriCity (short for Wireless Electricity). As a demonstration, the audience was shown an installation of two antennas, one of which created an electromagnetic field around itself, which, in turn, induced alternating current in the contour of the second antenna. This energy was enough to glow a 60-watt light bulb, located at a distance of 0.6 to 1 m.Subsequently, the company developed wirelessChargers for mobile gadgets, operating at a distance of up to 2.5 meters, and promises to surprise us with novelties. In the meantime, Korean scientists decided to create a wireless power supply system for any type of electric transport. A new technology called OLEV (short for On-line Electric Vehicle) involves recharging municipal vehicles on the go, as well as parking and long-term parking. The new electricity transmission was successfully tested and can soon be used in ports, airports, railways and city electric transport. As we see, new technologies are being gradually introduced into life, and maybe in the future our great-grandsons will forget what adapters and tees are, and the power lines and transformers will be seen only on the pictures of history textbooks.