Ultrasonic Frequency Inverter for Piezoelectric Transducer Driving: The Negative Effects on Grid and the Intelligent Solution

Ultrasonic waves transmitted through piezoelectric transducers has been widely used in many chemical and industrial applications due to the bidirectional function of converting the electrical power to mechanical vibration. Different drivers have been proposed for the transducer to study the quality of the power signals in terms of controlling the output frequency and load voltage. However, the passive and nonlinear components of the driving system were shown to negatively affect the Total Harmonic Distortion (THD) and the system Power Factor (PF) of the connected grid. As a part of a wider research work related to the use of ultrasonic waves in chemical pollutants destruction, the ultrasonic generator and connected transducers, were to be tested in terms of the quality parameters of THD and PF, before further experimentation is performed. Considering these requirements, this paper propose a solution through inserting an intelligent controller based on Artificial Neural Network. The collected results guarantees a PF value close to unity and THD level lower than 5% as well. The collected records is a promising step for the implementation of the ultrasonic waves in future application in the water treatment and industrial application without the concern of issues related to the connectivity with the grid.