Using a High frequency LC Resonant Inverter for Ultrasonic Cleaning Applications

Nowadays, ultrasonic systems have many applications in various fields such as welding, cutting, imaging, and cleaning. One of the main requirements of the ultrasonic systems is using a resonant circuit to drive the transducer, properly. In this paper, a high frequency LC resonant inverter is used for driving an ultrasonic cleaner in its optimum frequency, which provides maximum power conversion, as well as optimum clearing performance. Also, zero voltage switching (ZVS) at MOSFETs turn-on times is properly achieved, which reduces the dominant switching losses and electromagnetic interference noise and improves the converter efficiency. Finally, a laboratory prototype circuit has been implemented and tested under different conditions to confirm the performance of the proposed inverter for ultrasonic cleaner systems.