STATCOM的定频直接功率控制技术  

Research on VO-SVM-DPC STATCOM System

作　　者：张倩倩[1,2] 许彦[1,2] 李新宇[1,2] 张璐[1,2] 

机构地区：[1]中国矿业大学,江苏徐州221008 [2]江苏省电力传动与自动控制工程技术研究中心,江苏徐州221008

出　　处：《电测与仪表》2009年第11期28-31,45,共5页Electrical Measurement & Instrumentation

摘　　要：传统直接功率控制的STATCOM稳态特性不好,开关频率不固定,网侧滤波器设计困难等,本文从调制方法及功率计算方面出发,采用了一种新型的基于空间电压矢量调制的直接功率控制(VO-SVM-DPC),即定频直接功率控制以获得良好的控制性能。本文以瞬时无功功率为基础,以电网电流为状态变量建立了在dq坐标系下数学模型,采用SVPWM产生开关信号,实现定频控制,得到良好的无功补偿效果。最后基于Matlab仿真环境和DSP的物理实验平台验证了该控制策略的可行性。In this paper, for traditional direct power control STATCOM with the shortcomings of steady-state characteristics not very well, switching frequency not fixed, difficult for the net side in filter design, considering about modulation and power calculation, analyzed a novel direct Power Control based on voltage space vector modulation （VO-SVM-DPC）, that was, fix frequency direct power control which achieved good control performance. Based on instantaneous reactive power, set up the mathematical mode with grid current of state variables under the dq coordinate system, generated on-off signal using SVPWM to achieve fix frequency control, and got a good effect of reactive power compensation. Finally, simulation environment based on Matlab and experiments based on DSP physics platform validated the control strategy, and the simulation and experimental results verified the feasibility of the above mentioned control strategy.

关 键 词：静止无功补偿 定频直接功率控制 电压矢量控制 DSP 

分 类 号：TN464[电子电信—微电子学与固体电子学] TN787