宁夏电力Issue(4)：49-55,62,8.DOI:10.3969/j.issn.1672-3643.2024.04.009
有损LC滤波器和Buck变换器级联系统有源阻尼控制方法
Active damping control method of cascade system for lossy LC filter and Buck converter
黄瑞 1张生艳 1施浩楠 1郑如强1
作者信息
- 1. 国网宁夏电力有限公司经济技术研究院,宁夏 银川 750004
- 折叠
摘要
Abstract
In a cascaded system consisting of LC filters and Buck converters with constant loads,improper design of the front-end circuit′s LC filter parameters can lead to voltage oscillations due to parameter mismatches between stages.Although existing research has explored approximate linearization modeling,impedance ratio criteria,and damping control design of the system,they have overlooked the impact of filter losses.So this paper proposes a system circuit model that includes filter loss parameters.Based on this model,small-signal equations are formulated to derive the equivalent im-pedance of the system port.Subsequently,the Routh-Hurwitz Criterion is applied to analyze the influence of loss parameters on system stability,leading to the design of individual transfer functions for the system′s active damping feedforward control loop.Finally,the effectiveness of this control method is evaluated and validated through impedance ratio criterion,equivalent impedance Bode plots,and simulation results.关键词
级联系统/恒功率负载/阻抗比判据/小信号稳定性/有源阻尼控制Key words
cascade system/constant power load/impedance ratio criterion/small signal stability/active damping control分类
信息技术与安全科学引用本文复制引用
黄瑞,张生艳,施浩楠,郑如强..有损LC滤波器和Buck变换器级联系统有源阻尼控制方法[J].宁夏电力,2024,(4):49-55,62,8.
