Rosen型压电陶瓷变压器的电路特性分析  

Analysis of Circuit Characteristics of Rosen Piezoelectric Ceramic Transformer

作　　者：王宪鹏 赵峰[2] 王国栋 冷凤羽 WANG Xianpeng;ZHAO Feng;WANG Guodong;LENG Fengyu(The Electrical Engineering College,Guizhou University,Guiyang 550025,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100089,China)

机构地区：[1]贵州大学电气工程学院,贵州贵阳550025 [2]中国科学院电工研究所,北京100089

出　　处：《电力科学与工程》2022年第4期57-62,共6页Electric Power Science and Engineering

摘　　要：Rosen型压电陶瓷变压器是利用压电陶瓷材料的压电效应实现机电能量转换的固体电子变压器,其特性不仅与自身的尺寸、所选取的陶瓷材料相关,还与其所连接的输入输出阻抗有关;因此对其进行电路特性分析,不仅有利于使用时提高其工作可靠性,而且有利于进一步分析其电学性能。从等效电路角度切入,得到Rosen型压电陶瓷变压器的输入阻抗、输出阻抗、电压增益、输出功率及效率等特性的数学表达式。通过观测表达式的三维曲线及其等高线投影,得到动态负载下可通过频率调节实现的不同控制目标,进而获得电路特性最优。The Rosen piezoelectric ceramic transformer is a solid electronic transformer that uses the piezoelectric effect of piezoelectric ceramic materials to realize electromechanical energy conversion.Its characteristics is not only related with its size and ceramic materials,but also with the input and output impedance it connects.Therefore,analyzing and studying its circuit characteristics can not only improve its working reliability,but also help to analyze its electrical properties.In this paper,the mathematical expressions of input impedance,output impedance,voltage gain,output power and efficiency of the Rosen piezoelectric ceramic transformer are obtained from the perspective of equivalent circuit.By observing the three-dimensional curve of the expression and its contour projection,it is obtained that different control objectives can be achieved by frequency adjustment under dynamic load,and optimal values of circuit characteristics can be obtained.

关 键 词：压电陶瓷变压器 等效电路 表达式曲线 频率调节 

分 类 号：TM401[电气工程—电器]