Cascaded Two-Level Inverter-Based Multilevel STATCOM for High-Power Applications
Cascaded Two-Level Inverter-Based Multilevel STATCOM for High-Power Applications
复制标题
适用于高功率应用的基于级联两电平逆变器的多电平 STATCOM
DOI：
10.1109/tpwrd.2014.2305692
复制
发表时间：
2014
影响因子：
4.4
通讯作者：
B. G. Fernandes
中科院分区：
文献类型：
--
作者：
N. N. V. Surendra Babu;B. G. Fernandes
本文提出了一种简单的基于级联两电平逆变器的多电平逆变器静态无功补偿方案。该拓扑结构由两个标准的双电平逆变器组成，通过三相变压器的开端绕组级联连接。逆变器的直流电压在不同的电平上进行调节，以获得四电平运行。在MATLAB/SIMULINK中进行了仿真研究，预测了该方案在平衡和不平衡供电电压条件下的性能。开发了实验室样机以验证仿真结果。控制方案采用TMS320F28335数字信号处理器实现。进一步研究了该拓扑结构的稳定性行为。建立了动力学模型，推导了传递函数。分析了系统在各种工况下的性能。
In this paper, a simple static var compensating scheme using a cascaded two-level inverter-based multilevel inverter is proposed. The topology consists of two standard two-level inverters connected in cascade through open-end windings of a three-phase transformer. The dc-link voltages of the inverters are regulated at different levels to obtain four-level operation. The simulation study is carried out in MATLAB/SIMULINK to predict the performance of the proposed scheme under balanced and unbalanced supply-voltage conditions. A laboratory prototype is developed to validate the simulation results. The control scheme is implemented using the TMS320F28335 digital signal processor. Further, stability behavior of the topology is investigated. The dynamic model is developed and transfer functions are derived. The system behavior is analyzed for various operating conditions.