27 Jun '22
“Wireless power transmission technologies are constantly evolving, such “charges” are inexpensive and highly efficient. But these standards are designed for low voltages and are mainly suitable for charging mobile devices. We have proposed a development that will help increase the operating time of drones, robots and electric vehicles,” said Sergei Sterlazhnikov, a third-year student of the Department of General Scientific Disciplines of the Lysva branch of the Perm Polytechnic.In many areas for monitoring objects and other purposes are used by drones, which saves financial and time resources. But drone flights are limited, as a single charge lasts 20 minutes, taking into account photography. Recharging UAVs on special platforms with wireless power transmission systems can significantly increase their operating time, according to researchers from the Perm Polytechnic Institute. Now on the market there are practically no analogs that would provide “power” of rechargeable batteries without returning to a person.
“Our development consists of two parts: a transmitter and a receiver. The receiver is assembled on the basis of a microcircuit that converts direct current into alternating current with a frequency of 150 kHz. Further, the voltage is transferred to the primary winding of the air transformer. Then, on the receiver winding, the voltage is transferred from the primary to the secondary winding, rectified, stabilized and fed to the BMS controller. Through it, you can charge the battery of the connected device,” - said the inventor.In addition, the researchers have developed an LLC resonance transmitter that will ensure high efficiency of charging drones and robots. The technology can also be used to “power” electric vehicles, as well as in other areas where wireless chargers are used.