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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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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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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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Convergence Property of Transmit Time Pre-Synchronization for Concurrent Cooperative Communication
2010 IEEE Global Telecommunications Conference GLOBECOM 2010, 2010This paper proposes a preamble detection-based cooperative transmit time pre-synchronization technique specially for Concurrent Cooperative Transmission (CCT). CCT enables a collection of power-constrained radios to transmit as a group and achieve a transmit range that is much greater than the range of a single device. In the absence of a GPS system or
Yong J Chang, Mary Ann Ingram
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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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Synchronization Process and a Pre-synchronization Method of the Virtual Synchronous Generator
2020 4th International Conference on HVDC (HVDC), 2020Virtual synchronous generator (VSG) is the concept of controlling the grid-connected inverters to mimic conventional synchronous generators (SGs), and it is considered to be a promising method to enhance the grid inertia and power regulation ability when the renewable energy has a high penetration rate in the grid.
Weiqiang Zhan +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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2016 Annual Conference on Information Science and Systems (CISS), 2016
We describe the key ideas behind our implementation of a distributed antenna array fully pre-synchronized for retrodirective transmission to an external receiver. In our implementation, a number of wireless transceivers in a network use a sequence of simple in-band wireless message exchanges to calibrate themselves so that these transceivers can obtain
Ben Peiffer +4 more
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We describe the key ideas behind our implementation of a distributed antenna array fully pre-synchronized for retrodirective transmission to an external receiver. In our implementation, a number of wireless transceivers in a network use a sequence of simple in-band wireless message exchanges to calibrate themselves so that these transceivers can obtain
Ben Peiffer +4 more
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A fundamental wave recursive DFT algorithm applied in the inverter's pre-synchronization
2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011This paper presents a voltage fundamental wave recursive DFT algorithm applied in grid-connected inverter pre-synchronization. The algorithm not only is able to reliably track the voltage fundamental phase, frequency and amplitude, but also reduces the calculating consumption to guarantee real-time algorithm.
Sun Guang, Zha Xiaoming
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