Results 31 to 40 of about 192,634 (311)

Identification method of all-operating-point admittance model for wind farms considering frequency-coupling characteristics

International Journal of Electrical Power & Energy Systems
Admittance identification is an effective tool to solve the issue of black-box admittance modeling in wind farms. However, due to the large operating range of wind farms, it is difficult to accurately identify the admittance model of wind farms under all
Zilin Zhang, Wenhua Wu, Zhiwei Xie, Yandong Chen, Yuancan Xu, Shixiang Cao, Zhihao Dai   +6 more
doaj   +1 more source

The Influence Factor Analysis of Symmetrical Half-Bridge Power Converter through Regression, Rough Set and GM(1,N) Model

Axioms, 2022
Analysis of power converter performance has tended to be engineering-oriented, focusing mainly on voltage stability, output power and efficiency improvement. However, there has been little discussion about the weight relations between these factors.
Shih-Kuen Changchien, Kun-Li Wen
doaj   +1 more source

Single Power-Conversion AC-DC Converter With High Power Factor and High Efficiency [PDF]

, 2018
This paper proposes a single power-conversion ac-dc converter with high power factor and high efficiency. The proposed converter is derived by integrating a full-bridge diode rectifier and a series-resonant active-clamp dc-dc converter.
Cho, YW, Kwon, JM, Kwon, BH
core   +1 more source

Quantitative stability analysis of Grid-Following inverter with Grid-Supporting control and stability enhancement method based on Multi-Voltage feedforward

International Journal of Electrical Power & Energy Systems
Grid-following inverters with grid-supporting control (GFLI-GSC) can provide inertia and voltage support to the grid, but GSC degrades their stability under weak grid.
Song Zhang, Zhiwei Xie, Yandong Chen, Zili Wang, Wenhua Wu, Qianyuan Li   +5 more
doaj   +1 more source

Power conversion efficiency of non-equilibrium light absorption

AIP Advances, 2017
We deduce a novel expression for the non-equilibrium photochemical potential and the power conversion efficiency of non-equilibrium light absorption by a thermostated material. Application of our results for the case of electron migration from valence to
I. Santamaría-Holek, N. J. López-Alamilla, A. Pérez-Madrid   +2 more
doaj   +1 more source

An improved grid-forming control method with adaptive virtual impedance combining current limitation and transient stability improvement

International Journal of Electrical Power & Energy Systems
The virtual impedance (VI) control method is widely used to limit fault current for grid-forming converter (GFMC). However, in this article, it is found that the VI deteriorates the transient synchronization stability of the GFMC under grid faults.
Xiaoping Zhou, Lei Zhang, Hanting Peng, Lerong Hong, Qianming Xu, Zhen Zhang, Jiakun Shao, Jianchao Ma, Yizhen Hu   +8 more
doaj   +1 more source

Latest Updates of Single-Junction Organic Solar Cells up to 20% Efficiency

Energies, 2023
Single-junction organic solar cells have reached a power conversion efficiency of 20% with narrow bandgap non-fullerene electron acceptor materials such as Y6, as well as with large band gap electron donor materials and their derivatives.
Boudia Mohamed El Amine, Yi Zhou, Hongying Li, Qiuwang Wang, Jun Xi, Cunlu Zhao   +5 more
doaj   +1 more source

Multi-Source Information Fusion for Environmental Perception of Intelligent Vehicles Using Sage-Husa Adaptive Extended Kalman Filtering

Sensors
With the rapid advancement of intelligent driving technology, multi-source information fusion has become a vital topic in the field of environmental perception.
Yibo Meng, Huifang Kong, Tiankuo Liu
doaj   +1 more source

Analysis and suppression method of synchronous frequency resonance for self-synchronizing voltage source inverter

International Journal of Electrical Power & Energy Systems
Self-synchronizing voltage source inverter (SSVSI) can effectively improve grid frequency stability. However, the synchronous frequency resonance (SFR) inevitably exists in SSVSI.
Youze Fu, Yandong Chen, Zhiwei Xie, Zili Wang, Shixiang Cao, Xuyang Li, Xudong Li, Hua Li   +7 more
doaj   +1 more source

Quantitative stability analysis of STATCOM in voltage control mode and Enhanced control method based on voltage feedforward

International Journal of Electrical Power & Energy Systems
STATCOM is a crucial device for reactive power compensation and voltage regulation. However, under weak grid conditions, oscillations may arise during voltage control (VC) mode operation due to the AC Voltage Controller (AVC), potentially jeopardizing ...
Song Zhang, Yandong Chen, Qianyuan Li, Zhiwei Xie, Youze Fu, Wenhua Wu   +5 more
doaj   +1 more source