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Jinzhu Shi, Lihui Yang and Hao Yang
As a common interface circuit for renewable energy integrated into the power grid, the inverter is prone to work under a three-phase unbalanced weak grid. In this paper, the instability of grid-connected inverters under the unbalanced grid condition is i...
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Sebastian Avram and Radu Vasiu
NB-PLC (narrowband power line communication) is a method of data communication that involves superimposing a relatively high-frequency signal (9 kHz to 500 kHz), which contains data, onto the power grid?s low frequency (50 to 60 Hz) signal. While using t...
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Youyun Wang, Yan Li, Zhuo Yang and Xin Cheng
An intelligent control strategy based on a membership cloud model in a high reliable off-grid microgrid with a reconfigurable inverter is proposed in this paper. The operating principle of the off-grid microgrid with the reconfigurable inverter is provid...
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Liang Huang, Chao Wu, Dao Zhou and Frede Blaabjerg
Continuously expanding deployments of distributed power generation systems are transforming conventional centralized power grids into mixed distributed electrical networks. The higher penetration and longer distance from the renewable energy source to th...
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Miloud Rezkallah, Hussein Ibrahim, Félix Dubuisson, Ambrish Chandra, Sanjeev Singh, Bhim Singh and Mohamad Issa
In this paper, a composite control strategy for improved off-grid configuration based on photovoltaic (PV array), a wind turbine (WT), and a diesel engine (DE) generator to achieve high performance while supplying nonlinear loads is investigated. To oper...
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Wenjie Liu, Yongheng Yang, Tamas Kerekes, Elizaveta Liivik, Dmitri Vinnikov and Frede Blaabjerg
In transformerless grid-connected photovoltaic (PV) systems, leakage currents should be properly addressed. The voltage fluctuations between the neutral point of the grid and the PV array, i.e., common-mode voltage (CMV), will affect the value of the lea...
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Hao Qiu, Shuhong Wang, Naming Zhang, Fengju Sun, Zhiguo Wang, Xiaofeng Jiang, Hongyu Jiang, Xu He and Shuya Ning
The focus of this paper is numerical analysis on the performance of a newly designed mega-ampere (MA) class single-stage fast linear transformer driver (FLTD) with 24 separate columns in the China Z-pinch driver CZ34. However, the internal structure and ...
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Ibrahim Ismael Alnaib,Omar Sh. Alyozbaky,Ali Abbawi
Pág. 6 - 16
Faults in the power system generally provide considerable changes in its quantities such as under or over-power, over-current, current or power direction, frequency, impedance, and power factor. Reading data related to both currents and voltages is usual...
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Jingrong Yu, Limin Deng, Dongran Song and Maolin Pei
This paper proposes a virtual impedance-based bandwidth control method for multi-parallel harmonic-compensation grid-connected inverters (HCGIs). Firstly, the influence of the resonance points caused by the interaction of multiple HCGIs on the control ba...
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Yuqi Peng, Yuanbin He and Lijun Hang
Distributed power inverters with inductive capacitive?inductive (LCL) filters have become popular in distributed power generation system. However, due to unknown grid impedance, the inverters are confronted with challenges of local filter resonance, poor...
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