Article
Engineering, Electrical & Electronic
Chang Li, Yaqian Yang, Yijia Cao, Alena Aleshina, Jiazhu Xu, Frede Blaabjerg
Summary: This article presents a unified calculation method to determine the equivalence of inertia and damping under various ratios of R-g/X-g. It also estimates the improved inertia and damping support enabled by virtual inductance control. Additionally, a compromise between oscillation damping and aperiodic loss of synchronization is proposed by tuning the value of virtual inductance.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Review
Energy & Fuels
Wenju Sang, Wenyong Guo, Shaotao Dai, Chenyu Tian, Suhang Yu, Yuping Teng
Summary: This paper provides a comprehensive overview of the virtual synchronous generator (VSG), including its basic operation principle, key issues, and typical applications. It offers a comprehensive perspective for addressing the grid frequency stabilization problems caused by low inertia and underdamped power systems.
Article
Engineering, Electrical & Electronic
Qianwen Xu, Tomislav Dragicevic, Lihua Xie, Frede Blaabjerg
Summary: This article proposes a double-artificial neural network (ANN)-based method for designing VSG inertia parameter considering both reliability and stability. A representative frequency profile is generated to extract various VSG power injection profiles under different inertia values, and a functional relationship between inertia parameter and lifetime consumption of VSG is established through the proposed double-ANN reliability model.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Zili Wang, Yandong Chen, Xueping Li, Yuancan Xu, Cong Luo, Qianyuan Li, Yaosen He
Summary: One drawback of the virtual synchronous generator (VSG) is the active power oscillation, especially in the parallel VSGs system. In this paper, a decentralized transient damping (DTD) control strategy is proposed to suppress active power oscillation during load fluctuations in the parallel VSGs system. The proposed strategy embeds transient electromagnetic power compensation and transient damping power compensation (TDPCP) control into the original VSG active power controller, providing flexibility in adjusting the system damping ratio without frequency measurement.
IEEE TRANSACTIONS ON SMART GRID
(2023)
Article
Engineering, Electrical & Electronic
Chang Li, Yaqian Yang, Yijia Cao, Lei Wang, Frede Blaabjerg
Summary: This article investigates the issues of virtual synchronous generator (VSG) in weak power grids and proposes solutions. By using methods such as impedance modeling and motion equation, the study analyzes the voltage stability and frequency stability of VSG and introduces an improved control method.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Energy & Fuels
Zhenao Sun, Dazhong Ma, Shuo Li
Summary: This paper proposes an active power oscillation damping method for frequency-detector-less virtual synchronous generator (VSG) to enhance transient stability and avoid the drawbacks of frequency detectors. By simplifying the conventional VSG control method and analyzing dynamic performance, the proposed approach shows better transient stability and power-sharing ability in experimental results compared to other conventional VSG control methods.
Article
Engineering, Electrical & Electronic
Xiaoling Xiong, Chao Wu, Bin Hu, Donghua Pan, Frede Blaabjerg
Summary: This article proposes an analytical method combining linear and nonlinear models to analyze the dynamic behaviors of the virtual synchronous generator during large disturbances. Additionally, design guidelines are provided to improve synchronization stability and frequency stability by adding a transient damping method.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Mathematics
Aleksey Suvorov, Alisher Askarov, Nikolay Ruban, Vladimir Rudnik, Pavel Radko, Andrey Achitaev, Konstantin Suslov
Summary: This paper discusses the variability of total inertia in modern converter-dominated power systems and proposes a novel control strategy based on a virtual synchronous generator (VSG) to address the challenges caused by renewable-based converter-interfaced generation. The paper introduces an enhanced VSG structure and develops adaptive algorithms for independent control of virtual inertia and VSG parameters. The theoretical and experimental results demonstrate the effectiveness of the developed control algorithms and VSG structure.
Article
Energy & Fuels
Mahmoud M. Elwakil, Helmy M. El Zoghaby, Soliman M. Sharaf, Magdi A. Mosa
Summary: This paper applies a virtual synchronous generator (VSG) controller to a hybrid energy storage system (HESS) in an isolated microgrid to maintain frequency stability. It investigates the use of adaptive virtual inertia constant and constant virtual damping coefficient for frequency stability enhancement and compares them with the constant parameter VSG. The paper also proposes modifications to the control technique and evaluates the VSG parameters through different methods. The superiority of the proposed technique in enhancing frequency stability, accelerating steady-state frequency restoration, and reducing energy requirement is examined.
PROTECTION AND CONTROL OF MODERN POWER SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Yi Zhang, Qiuye Sun, Jianguo Zhou, Josep M. Guerrero, Rui Wang, Abderezak Lashab
Summary: This paper proposes a novel virtual synchronous generator (VSG) controller for converters in AC microgrids (MGs) that improves control cost, DC-side energy requirements, and considers system non-linearity for frequency support. The frequency dynamics of the MG are analytically studied based on the VSG with a secondary frequency controller, and a nonlinear state space representation is formulated. An online adaptive dynamic programming (ADP) method is used to solve the optimal frequency regulation problem, and a single echo state network (ESN) is constructed for approximation to reduce computational burden and improve real-time computation. Simulation results show significant improvement in system frequency response and retention of more DC-side energy.
IEEE TRANSACTIONS ON SMART GRID
(2023)
Article
Energy & Fuels
Khalid Mehmood Cheema, Naveed Ishtiaq Chaudhary, Muhammad Faizan Tahir, Kashif Mehmood, Muhammad Mudassir, Muhammad Kamran, Ahmad H. Milyani, Z. M. Salem Elbarbary
Summary: The integration of distributed generation into the power system is rapidly increasing, however, the low inertia and damping of DG result in severe stability issues. To address these problems, the virtual synchronous generator (VSG) control technique is proposed to suppress various stability issues in distributed power generation systems. This paper provides an in-depth literature review on VSG, discusses various modified and improved control techniques for VSG, and explores the stability and applications of VSG. Furthermore, critical issues in VSG and future research directions are discussed.
Article
Engineering, Electrical & Electronic
Si Phu Me, Mohammad Hasan Ravanji, Bruno Leonardi, Deepak Ramasubramanian, Jin Ma, Sasan Zabihi, Behrooz Bahrani
Summary: In this letter, a transient stability analysis of VSGs equipped with quadrature-prioritized CL is performed. The study shows that in addition to the instability caused by the positive feedback of the primary controller, a VSG could become unstable after large disturbances due to the failure of the inner voltage controller. A stability criterion is provided for the voltage control loop in this study.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Computer Science, Information Systems
Shengwei Qu, Zhijie Wang
Summary: This paper introduces the application of virtual synchronous generator technology in the inverter control system, which has adjustable parameters to enhance the robustness of the microgrid. Based on this technology, a cooperative control strategy is proposed to effectively improve the system's transient performance.
Article
Engineering, Electrical & Electronic
Shimiao Chen, Yao Sun, Xiaochao Hou, Hua Han, Siqi Fu, Mei Su
Summary: This letter addresses the crucial problem of parameters design for converter-based virtual synchronous generators (VSGs) to ensure stable operation. Existing methods lack quantitative design of virtual inertia and damping for transient stability. The letter derives sufficient conditions for VSG control parameters using Lyapunov direct method and obtains a feasible parameter region that satisfies grid-code-based transient stability and RoCoF requirement. The designed control parameters region is validated through control-hardware-in-the-loop (CHIL) experiment.
IEEE TRANSACTIONS ON POWER SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Vincenzo Mallemaci, Fabio Mandrile, Sandro Rubino, Andrea Mazza, Enrico Carpaneto, Radu Bojoi
Summary: The concept of Virtual Synchronous Generator (VSG) can help power electronic converters behave as synchronous generators, providing ancillary services and addressing grid stability issues. This paper reviews and compares ten VSG solutions, describes each model, proposes a tuning procedure, and presents experimental tests to show the behavior of the VSGs.
ELECTRIC POWER SYSTEMS RESEARCH
(2021)
