基于级联式电压源逆变器的静止同步补偿电压控制器的设计

为了提高静止同步补偿器的耐压水平和容量,尽量限制系统谐波失真,同时减少逆变器的附属设备,设计了一种新型级联式电压源逆变器构成的静止同步补偿电压控制器,并对该控制器的运行进行了研究。根据该级联式三相三电平电压源逆变器的拓扑结构,该静止同步补偿器可以在没有变压器的情况下运行,并可以限制谐波失真到一个非常小的值。同时,给出了由级联式多电平电压源逆变器构成的静止同步补偿器的运行原理。

The Design of STATCOM Voltage Controller Based on Cascaded Multilevel

For advancing the withstand voltage level and capacity of STATCOM,limiting the harmonic distortion,and reducing the appertained devices of VSI(voltage source inverter),a new type STATCOM voltage controller constructed by cascaded multilevel has been designed,and a study on which was done.The VSI is with topology of three-phase 3-level,based on that,the STATCOM may operate without transformer,and the harmonic distortion could be limited to a very small value.The operation principle of the STATCOM constructed by cascaded multilevel VSI is also given in detail.