State-space model of grid-connected inverters under current control mode
State-space model of grid-connected inverters under current control mode
复制标题
DOI：
10.1049/iet-epa:20060276
复制
发表时间：
2007-05-01
影响因子：
1.7
通讯作者：
Green, T. C.
中科院分区：
文献类型：
--
作者：
Kroutikova, N.;Hernandez-Aramburo, C. A.;Green, T. C.
分布式发电的增长已经导致具有旋转机器发电机和逆变器接口发电机的混合的配电系统。这种网络的稳定性需要通过分析状态空间模型来研究，因此需要合适的逆变器模型来补充完善的旋转电机模型。由于机器模型包括自动电压调节器和清洗功能等功能，因此逆变器模型还包括锁相功能和内部控制回路。建立了电压型逆变器的数学模型，该模型包括电流内环、功率外环、平均功率测量环和锁相环。该模型的详细介绍，并形成一个状态向量，类似于用于旋转机器。该模型包括非线性项，但可以在工作点附近线性化。在Simulink/PLECS中对状态空间模型进行了部件级时间步长仿真验证。
Growth of distributed generation has led to distribution systems with a mixture of rotating machine generators and inverter interfaced generators. The stability of such networks needs to be studied through the analysis of state-space models, and so suitable models of inverters are needed to complement the well-established models of rotating machines. As machine models include features such as automatic voltage regulators and wash-out functions, the inverter model also includes phase-locking functions and internal control loops. The model for voltage source inverters with an internal current control loop, an outer power regulation loop, a measurement of average power and a phase-locked loop has been developed. The model is presented in detail and is formed with a state-vector, similar to that used for rotating machines. The model includes nonlinear terms but can be linearised about an operating point. The state-space model is verified against a component-level time-step simulation in Simulink/PLECS.