Impact of Line and Control Parameters on Droop Stability in Inverters for Distributed Generation
Impact of Line and Control Parameters on Droop Stability in Inverters for Distributed Generation
复制标题
DOI：
10.1109/tsg.2017.2717869
复制
发表时间：
2018-11
影响因子：
9.6
通讯作者：
A. Bolzoni;G. Foglia;L. Frosio;M. Iacchetti;R. Perini
中科院分区：
文献类型：
--
作者：
A. Bolzoni;G. Foglia;L. Frosio;M. Iacchetti;R. Perini
分析了下垂控制逆变器的稳定条件和控制参数的设计要求。分析集中在一个单一的逆变器单元与交流（输出）滤波器和接口Transformer，因为这可能被视为分布式发电系统的基本组成部分。通过思想简化和操作的过程中，线性化的全状态空间模型被转换成一个独特的单输入，单输出系统，包括几个嵌套的循环。所得到的分析模型的传递函数有足够的“结构”来表示整体控制的不同演员之间的相互作用，如下垂的线性和导数项，虚拟阻抗和电压控制器。相应的参数的稳定性条件，然后推导出解析。在完整的系统上进行了实验测试，以检查所提出的模型的可靠性。
This paper analyzes stability conditions and design requirements for the control parameters in droop-controlled inverters. The analysis focusses on a single inverter unit with ac (output) filters and interface transformer, as this may be regarded as the elementary component of a distributed generation system. Through a process of thought simplifications and manipulations, the linearized full state-space model is transformed into a unique single-input, single-output system comprising several nested loops. The resulting analytical model in terms of transfer functions has enough “structure” to represent interactions between the different actors of the overall control, such as droop linear and derivative terms, virtual impedance, and voltage controllers. Stability conditions for the corresponding parameters are then derived analytically. Experimental tests are carried out on the complete system to check the reliability of the proposed model.