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논문 기본 정보

자료유형
학술저널
저자정보
Jirapong Jittakort (King Mongkut’s University of Technology) Anawach Sangswang (King Mongkut’s University of Technology) Sumate Naetiladdanon (King Mongkut’s University of Technology) Chayant Koompai (King Mongkut’s University of Technology) Saichol Chudjuarjeen (Rajamangala University of Technology Krungthep)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.17 No.5
발행연도
2017.9
수록면
1,150 - 1,159 (10page)

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초록· 키워드

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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.

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Abstract
I. INTRODUCTION
II. THE PIEZOELECTRIC CERAMIC TRANSDUCER
III. LCCL RESONANT INVERTER TOPOLOGY
IV. AVC WITH PLL CONTROL
V. SIMULATION AND EXPERIMENTAL RESULTS
VI. CONCLUSIONS
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