电气传动2026，Vol.56Issue(3)：3-9,7.DOI:10.19457/j.1001-2095.dqcd26297
无直流电解电容的两级调压电路及其控制方法
Two-level Voltage Regulation Circuit Without DC Electrolytic Capacitor and Control Method
摘要
Abstract
In response to the issues of large volume,high cost,and complex control algorithms associated with voltage regulation equipment in new energy distributed power distribution areas,a two-stage voltage regulation circuit topology based on a DC-link capacitor-free structure was proposed.Based on this topology,a mathematical model was established in the three-phase rotating coordinate system,and the transfer function was derived,simplified the model by considering only amplitude control.By combining the advantages of feedforward control and closed-loop control,a control strategy based on grid voltage feedforward and load voltage feedback was proposed.A small-signal model of the system was established,and the impact of grid voltage amplitude disturbances on load voltage amplitude was analyzed using Bode plots.System stability was analyzed using root locus analysis,and the range of controller parameter values was determined.Simulation comparisons have verified the practicality of the proposed topology and the precision and speed of the control method.关键词
调压装置/小容量直流电容/前馈控制/小信号分析Key words
voltage regulator/low-capacity DC capacitor/feedforward control/small-signal analysis分类
信息技术与安全科学引用本文复制引用
杨赫,陈沼宇,张金华,徐晶,王敬朋,朱世昌..无直流电解电容的两级调压电路及其控制方法[J].电气传动,2026,56(3):3-9,7.基金项目
国网天津市电力公司科技项目(经研2023-06城镇配电网源荷冲击下的快速电压波动分析与治理技术研究) （经研2023-06城镇配电网源荷冲击下的快速电压波动分析与治理技术研究）
