摘要
通过分析dq0坐标系下电压源换流器(VSC)模型,获知基于VSC的柔性直流输电系统(Flexible HVDC)可以通过对d轴电流分量和q轴电流分量的解耦控制,获得有功功率和无功功率的独立控制;并基于此设计了柔性直流输电系统换流站的控制器,利用电网电压的前馈控制获得了对功率传输的灵活、准确调节;实验结果表明了方案的正确性,整个系统具有良好的动静态特性。
Through the analysis of voltage source converter（VSC） equations in the dqO coordinate system, it is learned that the active power and reactive power in the flexible HVDC system can be independently controlled by the d-axis current component and the q-axis current component. The controllers of two VSCs are designed, and through the feedforward control, accurate.regulation of power transfer is achieved. The experimental results have validated the control scheme. The system has good characters in both steady state and dynamic state.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第9期1347-1351,共5页
Journal of Hefei University of Technology：Natural Science
基金
安徽省自然科学基金资助项目(070412062)
关键词
电压源换流器
柔性直流输电
功率传输
前馈控制
voltage source converter（VSC）
flexible HVDC
power transfer
feedforward control
