基于电流跟踪控制的三电平DSTATCOM装置的控制方法  

Industry Application of Three-level DSTATCOM Based on Direct Current Control Strategy

作　　者：谭甜源[1] 姜齐荣[1] 李刚 赖宇翔 吴春晖[1] 许树楷[1] 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京市100084 [2]北京四方清能电气电子有限公司,北京市100085

出　　处：《电力系统自动化》2007年第4期61-65,共5页Automation of Electric Power Systems

摘　　要：指出了在配电网静止同步补偿器(DSTATCOM)中应用直接电流控制方式能够有效地防止装置过流,从而提高其安全可靠性,降低开关器件所需的容量裕度,提高性能价格比。并针对DSTATCOM广泛应用的三电平三单相桥结构,提出了一整套三电平变流器电流跟踪与直流电压平衡控制方法。仿真和实验结果表明采用该控制方法后,DSTATCOM响应迅速,工作稳定可靠,对负荷冲击具有很好的补偿效果。The direct current control method for the DSTATCOM can greatly reduce the over-current risk of the converter, enhance the reliability and safety of the whole equipment, decrease the requested current rate of switch device and increase the performance/price ratio. Hence this paper proposes a three-level ramp comparison control method and the realization of neutral- point voltage control for the DSTATCOM based on transformer-isolated multilevel H-bridges converter. In the paper, the simulation and experiment results demonstrate that the DSTATCOM adopting ramp comparison control method can respond fast to the voltage fluctuation and flickers.

关 键 词：配电网静止同步补偿器 直接电流控制 中点钳位型三电平变流器 三角波比较法 

分 类 号：TM761.1[电气工程—电力系统及自动化]