Full Bridge Resonant Inverter Using Asymmetrical Control with Resonant-frequency Tracking for Ultrasonic Cleaning Applications


Vol. 17, No. 5, pp. 1150-1159, Sep. 2017
10.6113/JPE.2019.17.5.1150


PDF    

 Abstract

Flexibility in the power control of ultrasonic transducers has remained a challenge for cleaning applications. This paper introduces a modification of the existing piezoelectric ceramic transducer (PCT) circuit to increase the range of operation through its impedance characteristics. The output power is controlled using the asymmetrical voltage-cancellation (AVC) method. Together with a phase-locked loop control, the switching frequency of the inverter is automatically adjusted to maintain a lagging phase angle under load-parameter variations during the cleaning process. With the proposed modification, the region of the zero-voltage switching (ZVS) operation is extended, which results in a wider range of output power control. A hardware prototype is constructed and the control algorithm is implemented using an STM32F4 microcontroller. Simulation and experimental results are provided to verify the proposed method for a 50-W PCT. The operating frequency and output power ranges under study are 37 - 41 kHz and 15.8 - 50 W, respectively.


 Statistics
Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.



Cite this article

[IEEE Style]

J. Jittakort, A. Sangswang, S. Naetiladdanon, C. Koompai, S. Chudjuarjeen, "Full Bridge Resonant Inverter Using Asymmetrical Control with Resonant-frequency Tracking for Ultrasonic Cleaning Applications," Journal of Power Electronics, vol. 17, no. 5, pp. 1150-1159, 2017. DOI: 10.6113/JPE.2019.17.5.1150.

[ACM Style]

Jirapong Jittakort, Anawach Sangswang, Sumate Naetiladdanon, Chayant Koompai, and Saichol Chudjuarjeen. 2017. Full Bridge Resonant Inverter Using Asymmetrical Control with Resonant-frequency Tracking for Ultrasonic Cleaning Applications. Journal of Power Electronics, 17, 5, (2017), 1150-1159. DOI: 10.6113/JPE.2019.17.5.1150.