multi frequency ultrasonic generator for cleaning

multi frequency ultrasonic generator for cleaning
With the application of ultrasonic technology in cleaning, welding, crushing and many other industrial fields, the demand for new generation of ultrasonic power supply is becoming more and more urgent. Based on the analysis of traditional power ultrasonic power supply, this paper combines digital frequency direct synthesis (DDS) technology, phase-shifted pulse width modulation (PS-PWM) technology, and series resonant full-bridge inverters. Switching technology and so on, a power supply for ultrasonic generator based on DSP chip TM320 DSP2812 is designed. The main research contents of this paper include: In the inverter module, the full bridge inverter circuit with IGBT as switching device is designed, and the corresponding driving circuit is designed. In the matching circuit module, on the basis of analyzing the traditional matching circuit, this paper adopts an improved matching circuit, which successfully meets the two requirements of the ultrasonic power supply for the inductive matching and impedance transformation of the matching circuit. In the aspect of power regulation, through the analysis and comparison of several representative power regulation modes, PS-PWM power regulation is selected as the power regulation scheme of this design. It has the advantages of continuous and stepless power regulation without additional power regulation circuit, and combines this scheme with soft-switching circuit to effectively reduce switching loss. In the aspect of frequency tracking, aiming at the shortcomings of traditional phase-locked technology, a PI-DDS frequency tracking control method is proposed. By using the rapidity of digital PI controller and the accuracy of DDS technology, the fast and accurate frequency tracking of ultrasonic power supply is successfully realized, which ensures that the power supply always works at the resonant frequency. In addition, this paper also designs three kinds of protection circuits for ultrasonic power supply, which are over-current protection, over-voltage protection and temperature protection, to provide reliable guarantee for power supply stability.

Type	Power（W）	Frequency (KHz)	Transducer numbers	Size
AC110V60HZ+/-10%  USA /LATIN AMERICA STANDARD ARE AVAILABLE AC220V50HZ+/-10% EUROPE/ASIA/OCEANIA/AFRICA ARE AVAILABLE All of machine are available for opening remote control function to connect with your own PLC system
UCE-NT300	300W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	3-6	300x360x150
UCE-NT600	600W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	6-12	300x360x150
UCE-NT900	900W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	9-18	300x360x150
UCE-NT1000	1000W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	10-20	300x360x150
UCE-NT1200	1200W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	12-24	300x360x150
UCE-NT1500	1500W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	15-30	300x360x150
UCE-NT1800	1800W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	18-36	300x360x150
UCE-NT2000	2000W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	20-40	300x360x150
UCE-NT2400	2400W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	24-48	300x360x150
UCE-NT3000	3000W	20khz,25khz,28khz,33khz,40khz Frequency is adjustable	50-60	300x360x150
High Frequency	300W-1200W	65-80khz
High Frequency	300W-1200W	120-135khz