舰船电子工程2019，Vol.39Issue(1)：164-168,5.DOI:10.3969/j.issn.1672-9730.2019.01.040
Buck变换器级联系统直流母线电压稳定控制策略研究∗
Research on DC Bus Voltage Stability Control Strategy of Buck Converter Cascade System
马佳睿 1穆琳2
作者信息
- 1. 91404部队 秦皇岛 066000
- 2. 92956部队 大连 116041
- 折叠
摘要
Abstract
In order to improve the stability of the DC bus voltage and to restrain fluctuation of the DC bus voltage,an input voltage feedforward control strategy is proposed. First of all,take the cascade connection of two buck system as an example,the cas?cade connection of two buck system is modeled,and the single voltage loop controller and voltage feedforward controller are de?signed. Secondly the effect of the interaction between the source impedance and the converter impedance to the stability of the DC bus voltage. Thirdly the cascade system with only single voltage loop controller and with both voltage loop controller and voltage feed?forward controller are simulated. The results show that the DC bus voltage fluctuates significantly and fluctuates more strongly at the moment of load switching. After adding voltage feedforward contronller,the fluctuation of the DC bus voltage is effectively reduced and the dynamic performance of the load bus voltage is improved significantly At last we get a conclusion that voltage feedforward control can improve both the dynamic performance and the stability of the DC bus voltage .关键词
级联系统/前馈控制/直流母线/阻抗Key words
cascade system/feedforward control/DC bus/impedance分类
信息技术与安全科学引用本文复制引用
马佳睿,穆琳..Buck变换器级联系统直流母线电压稳定控制策略研究∗[J].舰船电子工程,2019,39(1):164-168,5.
