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Adaptive Pre-Synchronization and Discrete-Time Implementation for Unified Virtual Oscillator Control
2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021Unified virtual oscillator controller (uVOC) is a nonlinear time-domain controller which offers robust synchronization and enhanced fault ride-through for grid-following (GFL) and grid-forming (GFM) converters without the need for switching to a back-up controller.
M A Awal +4 more
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A Pre-synchronization Strategy for Grid-forming Virtual Oscillator Controlled Inverters
2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020Voltage controlled inverters in ac systems are susceptible to damage if the controller is not properly initialized before startup. Since currents are not controlled explicitly, the voltage reference of the controller must be closely aligned with the point of common coupling voltage to prevent large current transients when power delivery begins. In this
Minghui Lu +4 more
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Research on Pre-Synchronization Control Strategy for Microgrid VSG Inverter
2019 14th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2019In the microgrid, the virtual synchronous generator (VSG) technology realizes the friendly access of the distributed power supply and improves the stability of the power system by simulating the operating mechanism of the synchronous generator (SG). However, the VSG inverter has a large impact current at the moment when it is switching from off-grid to
Mengxiang Zhang +5 more
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Research on Pre-Synchronization Control Strategy of Optical Storage VSG Off-Grid Switching
Review of Computer Engineering Studies, 2022In the optical storage DC microgrid in island mode, in view of the large inrush current problem of the inverter controlled by the optical storage VSG when switching from off-grid to grid-connected operation mode, a pre-synchronization control strategy based on secondary frequency regulation and voltage regulation was proposed.
Yufei Peng +4 more
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Pre-synchronization control for parallel inverters based on power line communication
2008 IEEE Power Electronics Specialists Conference, 2008A novel wireless parallel control for inverters based on power line communication (PLC) is proposed, where the pre-synchronized control for voltage reference is realized beyond the current distribution control. The PLC modem chip is controlled by digital signal processor (DSP) to realize data transmitting and receiving operations through power line. By
null Zhongyi He +3 more
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A Novel Pre-synchronization Control Strategy for Virtual Synchronous Generator Based on NLADRC-PLL
2021 IEEE 4th International Electrical and Energy Conference (CIEEC), 2021Due to the mismatched voltage amplitude, phase and frequency between virtual synchronous generator (VSG) and utility grid, there may exist significant impulse current when VSG connects to the gird through the point of common coupling (PCC). This paper designs a NLADRC-PLL and proposes a novel pre-synchronization control strategy to decrease the impulse
Shaobo Geng +5 more
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Pre-synchronization Control Method of Virtual Synchronous Generator with Alterable Inertia
2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2019Virtual synchronous generator (VSG) is considered to be a promising grid-connect method for distributed generators (DGs) due to its inertial response and grid support ability. Just the same as conventional synchronous generators, the VSG should be regulated in synchronism with the point of common coupling (PCC) before grid-connection to avoid inrush ...
Pengxiang Xing +5 more
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Multi-inverters Pre-synchronization VSG Control Strategy for the Microgrid System
2019 IEEE 4th International Future Energy Electronics Conference (IFEEC), 2019In the microgrid, the virtual synchronous generator (VSG) technology can realize the friendly access of the distributed power supply and improve the stability of the power system. Especially for the multi-inverter micro-grid system, the inertia and the damping are important for the distributed generator (DG) system.
Xuemei. Zheng +5 more
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VSG-VFOC Pre-Synchronization Control for Graceful Mode Transition of Inverter-Based AC Microgrid
2018 17th International Symposium on Distributed Computing and Applications for Business Engineering and Science (DCABES), 2018This paper presents a novel virtual synchronous generator (VSG) based multi-loop control solution with the virtual flux oriented control (VFOC) aiming to efficiently manage the microgrids under dynamics. The pre-synchronization control aligned to the outer loop of such VSG-VFOC solution is investigated to ensure smooth microgrid operational transition ...
Qiang Yang +3 more
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2020 15th IEEE Conference on Industrial Electronics and Applications (ICIEA), 2020
A pre-synchronization control strategy for grid-connected three-phase inverters is proposed in this paper ,to solve the problem of slow response of the conventional synchronous unit containing a phase-locked loop (PLL), based on the synchronization principle between the synchronous generator (SG) terminal voltage and the grid voltage when there is no ...
Shiqiang Xiang +3 more
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A pre-synchronization control strategy for grid-connected three-phase inverters is proposed in this paper ,to solve the problem of slow response of the conventional synchronous unit containing a phase-locked loop (PLL), based on the synchronization principle between the synchronous generator (SG) terminal voltage and the grid voltage when there is no ...
Shiqiang Xiang +3 more
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