The Application of Phase Shift Control Technology in the Ultrasonic Power supply

Abstract:

With the increasingly wide use of power ultrasound technology in many department of the country, a new type of high-power ultrasound electric generator is urgently required. In this paper, UC3875 is used to be the core of the control system to generate the phase-shift that can control the waveform to drive IGBT so that the duty cycle of the full-bridge inverter can be changed. In this way, the output power can be controlled. Track the system frequency by using the principle of phase-locked loop and designing the frequency and tracking circuit properly. Compare the manual tuning with frequency automatic tracking by the experiment. As is shown in the experiment, the way to control can enable the stability of the power supply and the speed of dynamic response and the frequency tracking accuracy can reach 92.86%.

• Periodical: Advanced Materials Research (Volumes 860-863)
• Pages: 2404-2408
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.860-863.2404
• Online since: December 2013
• Authors: Jia Min Zhang, Xuan Hong, Wu Zhu, Cheng Qiang Zhai
• Keywords: Frequency Tracking, Power Control, Ultrasonic Power

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