Transient Simulation of Grid-Feeding Converter System for Stability Studies Using Frequency Response Optimized Integrators

Voltage regulation in buck--boost coniverters feeding an unknown constant power load: an adaptive passivity-based control

Rapid developments in power distribution systems and renewable energy have widened the applications of dc--dc buck--boost converters in dc voltage regulation. Applications include vehicular power systems, renewable energy sources that generate power at a low voltage, and dc microgrids. It is noted that the cascade--connection of converters in these applications may cause instability due to the fact that converters acting as loads have a constant power load (CPL) behavior. In this paper, the output voltage regulation problem of a buck--boost converter feeding a CPL is addressed. The constructio…

基于无源性的直流微电网四种下垂控制稳定性评估

Passivity based Stability Assessment for Four types of Droops for DC Microgrids

该研究针对直流微电网的四类升压变换器下垂控制，基于无源性概念结合EN 50388-2标准，通过低通滤波器和母线阻抗推导设计无源控制器，并经带恒功率负载的单变换器微电网仿真验证了方法有效性。

基于神经网络的双侧供电铁路系统阻抗识别与稳定性分析

Neural Network-Based Impedance Identification and Stability Analysis for Double-Sided Feeding Railway Systems

针对双侧供电铁路系统运行中因车辆频繁切换运行点致系统不稳定及振荡过电压问题，提出用可解释残差前馈神经网络结合SHapley加法解释训练车辆阻抗模型，还给出推导阻抗矩阵方法，经实际数据验证可准确评估系统高低频不稳定问题。

单相高精度高通通用积分器基于锁相环的设计

Design of a High-Performance High-Pass Generalized Integrator Based Single-Phase PLL

本文提出一种基于改进SOGI结构的单相PLL，有效抑制电网中的谐波、频率偏差和直流偏移，具有高通滤波特性，实现低资源消耗和快速暂态响应。

孤岛微电网中构网型功率变换器的反馈线性化与控制

Feedback Linearization and Control of a Grid-Forming Power Converter in an Islanded Microgrid

针对孤岛微电网中构网型逆变器，提出基于全状态反馈线性化的控制方法，消除旋转耦合、电阻压降和负载电导的非线性影响，使系统表现为两个独立双积分器，并通过极点配置设计响应。

Frequency stability assessment of modern power systems: models definition and parameters identification

One of the fundamental concerns in the operation of modern power systems is the assessment of their frequency stability in case of inertia-reduction induced by the large share of power electronic interfaced resources. Within this context, the paper proposes a framework that, by making use of linear models of the frequency response of different types of power plants, including also grid--forming and grid-following converters, is capable to infer a numerically tractable dynamical model to be used in frequency stability assessment. Furthermore, the proposed framework makes use of models defined i…