Review of HVDC control in weak AC grids

J Khazaei, P Idowu, A Asrari, AB Shafaye… - Electric power systems …, 2018 - Elsevier
Abstract Interconnection of High Voltage Direct Current (HVDC) transmission systems to a
weak AC grid has been a challenge in recent years. The main target of this paper is to …

An improved feedforward control method considering PLL dynamics to improve weak grid stability of grid-connected inverters

X Zhang, D Xia, Z Fu, G Wang… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Phase-locked loop (PLL) is commonly used for three-phase grid-connected inverters to
obtain the information of grid synchronization, and PLL dynamics are the key factors for …

Sub‐synchronous interactions in power systems with wind turbines: a review

K Gu, F Wu, XP Zhang - IET Renewable Power Generation, 2019 - Wiley Online Library
The sub‐synchronous interactions (SSIs) observed in wind power plants have gained
attention in recent years. These oscillations are characterised by the diversity of wind power …

Nonlinear transient stability analysis of phased-locked loop-based grid-following voltage-source converters using Lyapunov's direct method

MZ Mansour, SP Me, S Hadavi… - IEEE Journal of …, 2021 - ieeexplore.ieee.org
In this article, using Lyapunov's stability theorem, the transient stability conditions for a grid-
following voltage-source converter (VSC) are found. These conditions take into account both …

On stability of voltage source inverters in weak grids

A Adib, B Mirafzal, X Wang, F Blaabjerg - Ieee Access, 2018 - ieeexplore.ieee.org
As the number of inverters increases in the power grid, the stability of grid-tied inverters
becomes an important concern for the power industry. In particular, a weak grid can lead to …

A virtual synchronous generator control strategy for VSC-MTDC systems

Y Cao, W Wang, Y Li, Y Tan, C Chen… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
With the rapid increase of renewable energy sources and power electronic converters in the
power system, the inertia of the power system is declined and the stability problem is more …

An Improved Design of Current Controller for LCL-Type Grid-Connected Converter to Reduce Negative Effect of PLL in Weak Grid

S Zhou, X Zou, D Zhu, L Tong, Y Zhao… - IEEE Journal of …, 2017 - ieeexplore.ieee.org
For three-phase LCL-type grid-connected converter, when it is attached to weak grid, current
control interacts with phase-locked loop (PLL) via point of common coupling voltage …

Improved Design of PLL Controller for LCL-Type Grid-Connected Converter in Weak Grid

D Zhu, S Zhou, X Zou, Y Kang - IEEE Transactions on Power …, 2019 - ieeexplore.ieee.org
When LCL-type converter is attached to weak grid, its current control and phase-locked loop
(PLL) will interact with each other, via the point of common coupling voltage. Unfortunately …

Vector current control derived from direct power control for grid-connected inverters

Y Gui, X Wang, F Blaabjerg - IEEE Transactions on Power …, 2018 - ieeexplore.ieee.org
We propose a vector current control derived from direct power control (VCC-DPC) for a three-
phase voltage source inverter (VSI) in the synchronous rotating frame through instantaneous …

新能源并网逆变器控制策略研究综述与展望

张兴, 李明, 郭梓暄, 王继磊, 韩峰, 付新鑫 - 全球能源互联网, 2021 - epjournal.csee.org.cn
随着风电和光伏等新能源发电系统渗透率的不断提高, 电网呈现出弱电网甚至极弱电网特性,
给新能源并网发电系统稳定和高效运行带来了严峻挑战. 通过回顾现有典型的新能源并网逆变 …