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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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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
Benjamin 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
Benjamin Peiffer +4 more
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Combined Pre-Synchronization and Power Sharing Control for Microgrid Applications
2020 55th International Universities Power Engineering Conference (UPEC), 2020With the increased penetration of distributed generation in the power distribution systems, it becomes a requirement for microgrids to switch between islanding and grid-connected operation modes. When the line impedance of each micro-source in the microgrid is different, this will cause a mismatch in the output power of the micro-sources.
Li Lei +3 more
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A Pre-synchronization Method for Grid-connection Based on Virtual Synchronous Generator
2019 6th International Conference on Systems and Informatics (ICSAI), 2019The inverter is simulated as a synchronous generator that is friendly to large power grid, which can improve the absorption capacity of distributed power supply. However, when virtual synchronous generator (VSG) is connected to the grid, there will be a large current shock. Therefore, this paper proposes an improved pre-synchronization control strategy
Wenqiao Tang, Jun Liu
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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 Jun Chang, Mary Ann Ingram
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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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Design of a Low Power Pre-synchronization ASIP for Multimode SDR Terminals
2007SDR enables cost-effective multi-mode terminals but still suffers from significant energy penalty when compared to dedicated hardware solutions. At system level, this energy bottleneck can be leveraged capitalizing on heterogeneous MPSOC platforms where specific engines are dedicated to classes of functions with similar computation characteristics and ...
Thomas Schuster +6 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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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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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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