2022年6月24日 · This paper spotlights on the optimization of virtual synchronous generator (VSG) parameters and virtual impedances (VI) in islanded MGs using particle swarm optimization (PSO). A small-signal model for MG is developed at first.

2023年5月1日 · In this paper a novel VSG control system based on the concept of VSG is developed for inverters operating in parallel with SG to improve the voltage and frequency stability of MG with high penetration of IM loads during faults. For this purpose, a fault tolerant enhancement (FTE) module is added to the core of the VSG control system.

To address these aspects, this paper proposes a novel control structure for the virtual synchronous generator (VSG) that emulates inertia to mitigate the RoCoF, enhance the MG marginal stability, and preserve decentralized economic power-sharing.

2021年12月24日 · This article proposes an optimal virtual inertia control for the virtual synchronous generator (VSG) controlled inverter-based microgrid (MG) with the integration and application of large-scale renewable energy resources.

2020年12月1日 · In this direction, the present paper introduces a virtual inertia (VI)-based method to support the frequency control of the entire IMGs system using an extended virtual synchronous generator (E-VSG) in each MG. Unlike the conventional VSG, in the E-VSG, not only the primary control (or GFC) but also the secondary control (LFC) dynamics are ...

2014年1月1日 · The VSG systems can be used as effective control units to compensate the lack of inertia and in result the control of active and reactive power as well as MG voltage and frequency. A simplified MG architecture with VSG units is shown in Fig. 2.

Compared with the droop control, the virtual synchronous generator (VSG) control strategy effectively solves the lack of inertia and damping in the MG (Liu et al., 2014; D’Arco and Suul, 2014; Ma et al., 2021a). The basic principle of VSG is to introduce an equivalent rotation equation to emulate the inertia and damping characteristics of ...

本文提出了一种用于交流微电网（MG）中转换器的新型虚拟同步发电机（VSG）控制器。 这种控制器改善了控制成本和直流侧能量需求，同时考虑了系统非线性对频率支持的影响。 首先，基于带有二次频率控制器的 VSG 进行分析研究的 MG 频率动态被公式化为非线性状态空间表示。 稍后，惯性的倒数被建模为控制输入。 相应地，综合考虑角度偏差、频率偏差、频率变化率（RoCoF）和折扣因子来定义成本函数，它可以在临界频率范围和所需的控制能量之间保持折 …

最早提出的虚拟同步发电机VSG ( Virtual Synchronous Generator) 概念，借鉴了同步发电机的电磁与机械方程,从外特性上成功等效了同步发电机的模型,为逆变器增加了 惯性支撑 。在VSG控制技术的支撑下，并网逆变器能够参与电网电压，频率的调节，更具有灵活性，在微 ...

To simultaneously achieve these objectives in inverter control, this article proposes two methods: a novel adaptive inertia-based virtual synchronous generator (VSG) for frequency regulation, and an accurate power sharing mechanism based on a new feedforward line impedance approach for multiple parallel inverter-based DGs acting as voltage ...