Industry digitalization increases automation on the factory floor through robots, cobots, and other autonomous machinery such as AGVs and AMRs. With rising adoption, associated issues like charging and maintenance draw focus, as handling these autonomous vehicles without creating downtimes or disrupting their performance is a challenge. The ways to efficiently recharge these vehicles while in operation are constantly evolving. The latest development is wireless charging of AGVs and AMRs.

The idea of wireless charging, also known as wireless power transfer (WPT), was first introduced at the end of the 19th century by Nicola Tesla. He manufactured a wireless lighting bulb that was used to receive electrical charge wirelessly. Tesla used two metal plates that were placed close to each other. A high-frequency alternating current (AC) was passed between these two plates, and the bulb powered ON.