摘要
基于三相电压型变流器的无功功率补偿装置可以吸收或发出连续可调无功功率。分析了三相电压型变流器在dq坐标系下的数学模型,应用非线性微分几何理论中的状态反馈线性化控制方法,设计了基于直流侧电压与交流侧无功功率为控制目标的解耦控制器,并整定了控制器参数。最后在电磁暂态仿真软件PSCAD/EMTDC上对所设计的控制系统的有效性进行了仿真验证。结果表明,该控制方法具有良好的快速与稳定性能,补偿点的功率因数得到了明显的改善。
The three-phase voltage source converter can absorb and Issue continuously adjustable reactive power,based on reactive power compensator. The mathematic model of the three-phase voltage source converter in dq frame is analyzed. A decoupling method of the DC-side voltage and reactive power is designed through the state feedback linearization controlling strategy in nonlinear differential geometry theory,and the PI controller parameters are set. Finally, the control method is verified effectiveness by electromagnetic transient simulation software PSCAD/EMTDC. Simulation results show that the developed control method possesses better steadystate and dynamic behavior. Power factor of the Compensation point is improved significantly.
出处
《东北电力大学学报》
2009年第4期7-11,共5页
Journal of Northeast Electric Power University
关键词
无功功率补偿
三相电压型变流器
解耦控制
参数整定
reactive power compensation
three-phase voltage source converter
Deeoupled Control
Parameter set
