摘  要：该文基于串联多电平技术，完成一套链式静止同步补偿器控制系统的研究与设计。根据反馈解耦控制算法和单级倍频载波相移正弦脉宽调制方法，采用串联多电平技术，以TMS320F28335为核心处理器，采用软件算法实现补偿器直流侧电压均衡控制。设计链式结构的三相电压源逆变器，构成链式静止同步补偿器系统，实现系统无功补偿控制。经过试验测试，结果表明：该系统的无功补偿效果与理论一致，设计可行、可靠。

关键词：无功补偿；反馈解耦控制算法；串联多电平；链式静止同步补偿器

文献标志码：A       文章编号：1674-5124（2015）12-0100-06

Research and design of control system for cascade static synchronous compensators

WEI Lijun1，2， XIE Yongchao2

（1. School of Geosciences and Info-Physics，Central South University，Changsha 410083，China；

2. Hu’nan Railway Professional Technology College，Zhuzhou 412001，China）

Abstract: A control system for cascade static synchronous compensators has been developed on the basis of cascaded multilevel technology. In combination with feedback decoupling control algorithm and sinusoidal pulse width modulation for single-level frequency doubling carrier phase shifting， using cascaded multilevel technology， TMS320F28335 as core processor and software algorithm were employed to realize compensator DC-side voltage balancing control. A chain-linked three-phase voltage source inverter was designed accordingly to constitute a cascade static synchronous compensator system， thus achieving the goal of reactive power compensation control. Tests prove that the system is feasible and reliable.

Keywords: reactive power compensation； feedback decoupling control algorithm； cascaded multilevel；cascade static synchronous compensator