基于压电变压器的电源使用锁相环的可行性分析  

Investigating the viability of using the phase-locked-loop on piezoelectric transformer-based power supplies

作　　者：范瑞兆 陶智麟[1] 陶铁托[1] 黄启录 毛永炜[1] FAN Ruizhao;TAO Zhilin;TAO Tietuo;HUANG Qilu;MAO Yongwei(Zhengzhou Tobacco Research Institute of CNTC,Zhengzhou 450000,China)

机构地区：[1]中国烟草总公司郑州烟草研究院,河南郑州450000

出　　处：《河南科技学院学报（自然科学版）》2020年第2期65-73,共9页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：国家烟草专卖局资助项目(232018AB0410.2)。

摘　　要：为使开关电源中的压电变压器(PT)始终工作在其谐振频率附近,提出了在压电变压器驱动电路中使用锁相环的方法,设计了一种通过锁相环(PLL)实现频率跟踪的系统.通过建立仿真模型,验证了锁相环在负载,环境温度等因素改变时,PLL可以锁定PT的输入电流和输入电压之间的相位差,使压电变压器工作频率稳定在谐振频率附近,并使压电变压器始终工作在最佳工作效率.In order to make the piezoelectric transformer(PT)in switching power supply work at its resonant frequency continuously,a system of frequency tracking through phase-locked-loop(PLL)is designed.The simulation model is established to verify that the PLL can stabilize the operating frequency of the piezoelectric transformer near the resonant frequency and make the piezoelectric transformer always work in optimum working efficiencywhen the load,ambient temperature and other factors changed.

关 键 词：压电变压器 相位控制 锁相环 零电压开关 

分 类 号：TM41[电气工程—电器]