Results 251 to 260 of about 272,304 (330)

Asymmetric Wide‐Bandgap Polymers Simultaneously Improve the Open‐Circuit Voltage and Short‐Circuit Current for Organic Photovoltaics

Macromolecular Rapid Communications, 2019
AbstractA trade‐off between open‐circuit voltage (V OC) and high short‐circuit (J SC) becomes one of the most vital problems limiting further improvement in polymer solar cells' (PSCs) efficiency. In this work, two asymmetric polymer donors PBDT‐F‐2TC and PBDT‐SF‐2TC are designed and synthesized. When blended with a state‐of‐the‐art acceptor IT‐4F with
Shaorong Huang, Wanying Gu, Lie Chen, Zhihui Liao, Yongkang An, Cunbin An, Yiwang Chen, Jianhui Hou   +7 more
openaire   +3 more sources

Control of Virtual Synchronous Generator With Improved Transient Angle Stability Under Symmetric and Asymmetric Short Circuit Fault

IEEE Transactions on Energy Conversion
Implementation aspects of fault-ride-through (FRT) operation in voltage source converter with virtual synchronous generator (VSG) control are discussed in this paper.
Yu Zhang, Chen Zhang, Marta Molinas, Xu Cai   +3 more
openaire   +2 more sources

Current-Limiting Strategy for Asymmetric Short-Circuit of Three-Phase Inverter for Continuous Power Supply of Nonfaulty Loads

IEEE transactions on power electronics, 2023
The short-circuit fault ride-through capability of the inverter directly affects the reliability of the independent power supply system under short-circuit faults.
Youwen Zhang, Xuejun Pei, Min Yang, Jin Li, Peng Zhou, Yue Yao   +5 more
semanticscholar   +1 more source

Calculation of branch short circuit asymmetrical current considering breaking sequences

2021 IEEE 4th International Electrical and Energy Conference (CIEEC), 2021
With the expansion of the scale of power grid interconnection, the grid connection is becoming more and more closely, and the grid resistance ratio is also increasing, which slows down the attenuation of the DC component of the short-circuit current, and affects the checking of the breaking capacity of the circuit breaker. At present, in practice, only
Ruanming Huang, Fei Fei, Mingze Zhang, Tianli Song, Wei Cao, Shicheng Gui, Bilun He   +6 more
openaire   +1 more source

Breaking Characteristics of Asymmetric Short-Circuit Current Induced by Pressure Chamber Volume of SF₆ Self-powered Circuit Breaker

2025 IEEE 8th International Electrical and Energy Conference (CIEEC)
Zhengyong Hu, Peng Xu, Guliang Zhou, Zhihao Lu, Xue Zhang, Yixuan Li, Shulei Zhao, Bin Xiang, Zhiyuan Liu   +8 more
openaire   +2 more sources

Analysis of breaking capability within asymmetrical short circuits

2015 16th International Scientific Conference on Electric Power Engineering (EPE), 2015
This paper discusses the occurrence of asymmetrical currents and difficulties within their breaking due to the reduced breaking capability in limitary areas of breaker's characteristics. It's aimed at breaking of generator short-circuits with specific course.
Vladimir Vajnar, Zdenek Vostracky, Jan Sedlacek   +2 more
openaire   +1 more source

PM Synchronous Machine Drive Response to Asymmetrical Short-Circuit Faults

IEEE Transactions on Industry Applications, 2014
This paper investigates the impact of machine topology and parameters on the fault-mode characteristics of permanent-magnet synchronous machines (PMSMs) exposed to asymmetrical short-circuit (ASC) faults, one of the most dangerous faults in terms of peak current amplitudes and demagnetization risks.
Gilsu Choi, T. M. Jahns
openaire   +1 more source

Asymmetrical Short-Circuit Current Interruption by Synthetic Testing Method

IEEE Power Engineering Review, 1983
In this paper, the authors are dealing with a problem which, up to now, has not resulted into any official recommendation, i.e the method to be used to define the transient recovery voltage to be applied further to the interruption of an asymmetrical current, on synthetic testing.
E. Thuries, J. Dayet, B. Joyeux-Bouillon
openaire   +1 more source

High‐Efficiency Organic Solar Cells Enabled by Chalcogen Containing Branched Chain Engineering: Balancing Short‐Circuit Current and Open‐Circuit Voltage, Enhancing Fill Factor

Advanced Functional Materials, 2023
The elaborate balance between the open‐circuit voltage (VOC) and the short‐circuit current density (JSC) is critical to ensure efficient organic solar cells (OSCs).
Jiefeng Hai, Yuanxia Song, Ling Li, Xin Liu, Xiaoyu Shi, Zhuoyue Huang, Guangming Qian, Zhenhuan Lu, Jiangsheng Yu, Huawei Hu, Shangshang Chen   +10 more
semanticscholar   +1 more source

Active Power Backflow Suppression Strategy of Cascaded PV Solid-State Transformer Under Interphase Short-Circuit Fault Condition

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2023
Currently, the grid-tied guidelines all require large and medium-sized photovoltaic (PV) power stations to stay connected to the grid during low-voltage ride through (LVRT).
Tao Zhao, Zhijian Feng, Mingda Wang, Mengze Wu, Xing Zhang   +4 more
semanticscholar   +1 more source