[1]阙凌凡,林抒毅,黄晓生,等.兆赫兹超声波换能器匹配电路的研究与设计[J].福建理工大学学报,2025,23(03):254-259.[doi:10.3969/j.issn.2097-3853.2025.03.007]
 QUE Lingfan,LIN Shuyi,HUANG Xiaosheng,et al.Research and design of matching circuit for megahertz ultrasonic transducer[J].Journal of Fujian University of Technology;,2025,23(03):254-259.[doi:10.3969/j.issn.2097-3853.2025.03.007]
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兆赫兹超声波换能器匹配电路的研究与设计
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《福建理工大学学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第23卷
期数:
2025年03期
页码:
254-259
栏目:
出版日期:
2025-06-25

文章信息/Info

Title:
Research and design of matching circuit for megahertz ultrasonic transducer
作者:
阙凌凡林抒毅黄晓生沈焜李世茂
福建理工大学电子电气与物理学院
Author(s):
QUE Lingfan LIN Shuyi HUANG Xiaosheng SHEN Kun LI Shimao
School of Electronic, Electrical Engineering and Physics, Fujian University of Technology
关键词:
超声波电源兆赫兹空心变压器阻抗匹配
Keywords:
ultrasonic power supply megahertz air core transformer impedance matching䥺Symbol`@@
分类号:
TB552
DOI:
10.3969/j.issn.2097-3853.2025.03.007
文献标志码:
A
摘要:
以兆赫兹超声波换能器为研究对象,提出一种基于空心变压器的超声波换能器匹配电路设计。该匹配电路利用空心变压器等效励磁电感在谐振频率下与换能器进行阻抗匹配,从而使负载网络近似弱感性,使电压相位略超前于电流相位,实现逆变电路开关管零电压开通,减小无功损耗。分析相同匝数的Litz线与漆包线的阻抗特性,并对比了不同绕组材料对空心变压器高频损耗的影响。通过仿真分析与实验,搭建一台1 MHz超声波换能器驱动样机,实现在额定频率下超声波换能器的驱动波形正弦度高,电压峰峰值达到221.7 V,瞬时功率达到1 288.7 W。证明了所设计的超声波换能器匹配电路的可行性,解决了兆赫兹频率下超声波换能器驱动研制和阻抗匹配设计困难的问题。
Abstract:
Taking the megahertz ultrasonic transducer as the research object, a design of the matching circuit for ultrasonic transducer based on the air core transformer is proposed. This matching circuit utilizes the equivalent excitation inductance of the air core transformer at the resonant frequency to perform impedance matching with the transducer, thereby making the load network approximately weakly inductive, causing the voltage phase to slightly precede the current phase, achieving zero-voltage turn-on of the inverter circuit switch tube and reducing reactive power loss. The impedance characteristics of Litz wire and enameled wire with the same number of turns are analyzed, and the influence of different winding materials on the high-frequency loss of the air core transformer is compared. Through simulation analysis and experiments, an 1 MHz ultrasonic transducer drive prototype is constructed, achieving a high sinusoidal degree of the driving waveform of the ultrasonic transducer at the rated frequency, a peak-to-peak voltage of 221.7 V, and an instantaneous power of 1288.7 W. This proves the feasibility of the designed matching circuit for the ultrasonic transducer and solves the difficulties in the development and impedance matching design of the ultrasonic transducer drive at the megahertz frequency.

参考文献/References:

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相似文献/References:

[1]吴轲,黄晓生,林咏澍.LCC谐振式高升压比超声波换能器驱动[J].福建理工大学学报,2023,21(01):84.[doi:10.3969/j.issn.1672-4348.2023.01.013]
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更新日期/Last Update: 2025-06-25