基于虚拟阻抗的模块化直流电源并联均流控制研究
Study on Parallel Parallel Flow Control of Modular Direct Current Power Supply Based on Virtual Impedance
王敬莆1
作者信息
- 1. 国网山东省电力公司枣庄供电公司,山东枣庄 277000
- 折叠
摘要
直流电源各模块之间的参数存在差异,导致模块化直流电源并联运行时存在环流问题.为解决该问题,研究了基于虚拟阻抗的模块化直流电源并联均流控制.文章在模块化直流电源并联运行过程中检测模块间环流,设计一种纯阻性的虚拟阻抗,并加入直流电源并联系统控制结构.通过调整虚拟阻抗来抑制并联电源模块间环流,实现模块化直流电源并联均流控制.实验结果表明,设计方法下各并联直流电源模块之间负载电流的最大偏差仅0.58 A,可以实现良好的均流控制.
Abstract
There are differences in the parameters between the modules of the direct current power supply,which leads to circulating current problems when the modular direct current power supply operates in parallel.To solve this problem,a modular direct current power supply parallel current sharing control based on virtual impedance was studied.The article detects the circulating current between modules during the parallel operation of modular direct current power supplies,designs a pure resistive virtual impedance,and adds a control structure for the parallel direct current power supply system.The designed virtual impedance suppresses circulating currents between parallel power supply modules by adjusting the virtual impedance,achieving modular direct current power supply parallel current sharing control.The experimental results show that the maximum deviation of the load current between the parallel direct current power supply modules under the design method is only 0.58 A,which can achieve good current sharing control.
关键词
虚拟阻抗/模块化直流电源/直流电源并联/均流控制Key words
virtual impedance/modular direct current power/direct current power parallel/homogeneous flow control引用本文复制引用
出版年
2024
NETL
NSTL
万方数据