According to reports, Russia's GET (Global Energy Transmission) company pioneered the development of an airborne induction charging system. The system looks very simple: a group of poles prop up a flexible transmission line in a circle, forming a hexagon with a diameter of about 10 meters on the ground, which is a bit like the frame of a gazebo. In fact, this builds a charging area with a distance of tens of meters, which can wirelessly transmit kilowatt-level power.
When a drone with appropriate configuration and settings flies into this range, up to 12 kilowatts of power can be transmitted to the drone with about 80% efficiency. The drone stays in the charging area for 6 minutes (whether hovering or hovering), which is enough for about 25 minutes of battery life. GET's in-flight charging station gives industrial drones unlimited flight possibilities.
The system is simple and portable, and can be deployed or moved as needed, or multiple charging circuits can be set along the long-range operation line, separated by several kilometers from each other. Unmanned aerial vehicles continuously monitor the area, hovering to the nearest charging area for quick charging when needed, and flying to the next station when the battery is full. Since the system can charge multiple drones at the same time, it is not a problem to support the formation of drones.
GET claims that it strictly controls the electric field or magnetic field density in the charging area to be less than the limit approved for general applications, so the system is safe for humans and animals.
GET said that this design solution "reinvented" the commercial drone industry and provided technical solutions for the 24 × 7 mode of power drones in specific areas. It also has potential applications in many other industries, such as wireless charging of mobile communications, robotics, medical equipment, industrial equipment, pipeline (oil / gas) detectors, warehouse vehicles, electric vehicles, and other electronic devices.
Such a natural thing, why no one has done it before? GET has its own explanation. They believe that although their own remote wireless power technology is also based on resonant coupling circuits, they have designed unique engineering solutions that work under electromagnetic fields with completely safe density to provide energy over long distances with optimal analog efficiency. The success of the project also benefits from compressing the cost of high-power semiconductor devices in a selected frequency range to a reasonable range. A key component is a flexible power transmission line used as an energy transmitter. It can be made several kilometers long, and is simple, safe, and easy to deploy. In addition, the combination with other technologies in complementary industries also makes this air charging solution possible.
Allowing drones to operate in the air for a long time is a hot topic in the industry. For example, BShark, whose idea is to explore alternative fuels such as hydrogen to provide long-term flight for drones. The GET company focuses on air charging. It recently announced and demonstrated its technology at the AUVSI Xponential 2018, the largest annual exhibition in the driverless industry, and was awarded the third place in technological innovation.
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