Results 191 to 200 of about 14,088,991 (233)

A Pre-synchronization Strategy for Grid-forming Virtual Oscillator Controlled Inverters

2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020
Voltage 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, Soham Dutta, Victor Purba, Sairaj Dhople, Brian Johnson   +4 more
openaire   +1 more source

Adaptive Pre-Synchronization and Discrete-Time Implementation for Unified Virtual Oscillator Control

2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021
Unified 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, Md Rifat Kaisar Rachi, Md Rashed Hassan Bipu, Hui Yu, Iqbal Husain   +4 more
openaire   +1 more source

A Virtual Synchronous Generator-Based Control Strategy and Pre-Synchronization Method for a Four-Leg Inverter Under Unbalanced Loads

Symmetry
Virtual synchronous generator (VSG) control has positive effects on the stability of microgrids. In practical power systems, both single-phase loads and three-phase unbalanced loads are present.
Zhijie Liu, Ke-Jun Li, Baihe Su
exaly   +2 more sources

Pre-synchronization Control Method of Virtual Synchronous Generator with Alterable Inertia

2019 IEEE 10th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2019
Virtual 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, Xuanyue Jia, Chunzheng Tian, Yubin Mao, Linlin Yu, Xiaoliang Jiang   +5 more
openaire   +1 more source

A Sliding Mode Control-Based Pre-Synchronization Strategy for Virtual Oscillator Controlled Grid-Forming Inverters

2024 IEEE 10th International Power Electronics and Motion Control Conference (IPEMC2024-ECCE Asia)
Guanguan Zhang, Alian Chen, Shaokun Niu
exaly   +2 more sources

Pre-Synchronization Control Strategy for Grid-Forming Converters Considering Frequency Deviation and Synchronization Speed

Electrical Engineering
Xinlong Deng
exaly   +2 more sources

Research on Pre-Synchronization Control Strategy of Optical Storage VSG Off-Grid Switching

Review of Computer Engineering Studies, 2022
In 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, Hua Li, Xiaoyan Li, Jikang Wang, Xinyu Zhang   +4 more
openaire   +1 more source

Pre-synchronization control for parallel inverters based on power line communication

2008 IEEE Power Electronics Specialists Conference, 2008
A 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, null Xiaona Wang, null Yan Xing, null Yundong Ma   +3 more
openaire   +1 more source

Multi-inverters Pre-synchronization VSG Control Strategy for the Microgrid System

2019 IEEE 4th International Future Energy Electronics Conference (IFEEC), 2019
In 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, Hannan Cao, Haoyu Li, Tongfei Cui, Yuchao Jiang, Mengxiang Zhang   +5 more
openaire   +1 more source

A Novel Pre-synchronization Control Strategy for Virtual Synchronous Generator Based on NLADRC-PLL

2021 IEEE 4th International Electrical and Energy Conference (CIEEC), 2021
Due 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, Qiang Wang, Jiangbo Ren, Yongli Li, Xiaolong Chen, Song Li   +5 more
openaire   +1 more source