现代电子技术2025，Vol.48Issue(4)：10-17,8.DOI:10.16652/j.issn.1004-373x.2025.04.002
滤波参数对逆变器输出波形的影响研究
Research on impact of filter parameter on output waveform of inverter
摘要
Abstract
A LLC type filter structure is designed to investigate the impact of filter inductance,capacitor,structure,and magnetic core material on the output waveform of the inverter.Under bipolar driving mode,the LLC type filter inductor and capacitor parameters can increase,resulting in better symmetry of the inverter output waveform.As the parameters continue to increase,this filtering structure will cause the initial fluctuation time of the output waveform to prolong,the fluctuation degree to increase,the circuit impedance and reactive power to increase,and the waveform to be over-corrected.The comparative study of LC,LLC and LCL filter structures shows that when the inductance and capacitance parameters are 3 mH and 14.1 μF,the three structures have better filtering characteristics,while the LLC filter structure has better line impedance balance characteristics and better output waveform symmetry.The influence of three core materials,Fe-Si-Al,Mn-Zn-Ferrite and amorphous nanocrystalline on the characteristics of LLC filter is studied.It is found that when the parameters are the same,the higher the permeability,the worse the wave symmetry.The impedance amplification can lead to the waveform distortion of inverter output.Therefore,comprehensive consideration should be given to inductance,capacitance,permeability and line impedance balance when designing an inverter filter to enhance its performance.关键词
LLC谐振/滤波电感/滤波电容/滤波结构/逆变器/线路阻抗/磁导率Key words
LLC resonance/filter inductor/filter capacitor/filtering structure/inverter/line impedance/magnetic permeability分类
信息技术与安全科学引用本文复制引用
汪志成,李紫微,陈经纬,嵇志腾..滤波参数对逆变器输出波形的影响研究[J].现代电子技术,2025,48(4):10-17,8.基金项目
江西省技术创新引导类项目(科技合作专项)(20212BDH80008) （科技合作专项）
东华理工大学江西省新能源工艺与装备工程技术研究中心开放基金(JXNE 2018-04) （JXNE 2018-04）
抚州市揭榜挂帅重大项目:变配电设备健康状态在线诊断及智能云平台 （）
江西省揭榜挂帅项目:梯次储能关键技术研究及应用示范(20233AAE02008) （20233AAE02008）
