Results 11 to 20 of about 7,377 (130)
Grid-connected control strategy of GFM inverter in solar-powered ship photovoltaic system [PDF]
Objective The paper aims to solve the problem of the overall stability of the ship's power system being reduced due to the use of grid-following (GFL) control for grid connection in existing solar ship photovoltaic (PV) power generation systems ...
Chunhua ZHAO +2 more
core +1 more source
Gaoya dianqi, 2023 虚拟同步发电机（virtual synchronous generator,VSG）型构网储能因其良好的阻尼与惯量支撑特性已被广泛关注，但VSG型构网储能难以抑制有功暂态存在的超调、振荡的同时削减有功稳态偏差，灵活性差。首先建立VSG型构网储能系统有功环的闭环小信号模型，由系统的特征方程、波特图以及根轨迹分析有功指令与电网频率扰动下的系统暂态与稳态特性。接着指出固定参数VSG型构网储能无法兼顾暂态存在的超调、振荡与稳态有功偏差。因此提出一种自适应VSG型构网储能控制策略 ...
赵炳洋, 赵波, 胡娟, 张芳
doaj
An analysis method for the maturity of power technology based on literature search [PDF]
China’s power industry has gone through a period of rapid development. With the transformation of the global energy structure, the development goal of building a new type of power system was proposed, which pointed out the direction for the next stage of
HE Dongshan +5 more
core +1 more source
Shuitu Baochi Xuebao, 2021 以长三角3省1市为研究区，旨在构建长三角地区土壤水分长时间序列，为农业生产和遥感算法提供数据支撑。研究基于空间匹配的站点土壤水分数据和气象数据，利用主成分分析得到4个有效主成分作为线性回归和BP神经网络模型的输入因子，建立土壤水分与气象因子间的定量关系，并评估所构建模型的精度。结果表明，基于全部站点数据建立的单一BP神经网络模型优于单一线性回归模型。单一线性回归模型的R2=0.34，RMSE=0.046 m3/m3，MAE=3.67%；而单一BP神经网络模型的训练、验证和测试3个数据集的R2均在0 ...
李柳阳 +4 more
doaj
Dynamic Power Decoupling Control of Virtual Synchronous Generator Based on Improved Virtual Impedance [PDF]
ObjectivesWhen a virtual synchronous generator (VSG) is connected to a medium and low voltage distribution network, the line impedance exhibits resistive and inductive characteristics, resulting in strong coupling in the VSG output power.
REN Mingwei +4 more
core +1 more source
Rare Metals, EarlyView.ABSTRACT The high accuracy in surface‐enhanced Raman scattering‐lateral flow immunoassays (SERS–LFIAs) is critical for reliable point‐of‐care testing (POCT) in clinical diagnostics. Conventional approaches are often affected by sampling variability and uneven distribution of immunoprobes, leading to unreliable signal fluctuations.
Shuai Zhao +9 more
wiley +1 more source
Developing New Quality Productive Forces to Achieve Carbon Neutrality [PDF]
ObjectivesIn response to global climate change, China has committed to achieving carbon neutrality by 2060, which will inevitably bring strategic transformations across various industries and present an opportunity to develop new quality productive ...
HU Shanying, JIN Yong, ZHANG Zhenye
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Rare Metals, EarlyView.ABSTRACT Organic‐inorganic hybrid perovskites (OIHPs) with white‐light emission have significant potential in solid‐state lighting and display due to the designable structure and excellent luminescent properties. However, OIHPs are prone to damage during bending due to the brittleness of crystals, which limits their application in the field of flexible
Jinyu Xu +8 more
wiley +1 more source
Research on Deep Peak Shaving Performance of 1 000 MW Ultra-Supercritical Coal-Fired Boiler [PDF]
ObjectivesDeep peak regulation of coal-fired boilers is crucial to the stability of the future power system dominated by new energy, but there is a lack of performance and engineering applications on deep peak regulation of 1 000 MW ultra-supercritical ...
DING Yong
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Rare Metals, EarlyView.ABSTRACT Developing Cu‐based composites that simultaneously achieve ultra‐high strength, ductility, and electrical conductivity remains critical for advanced electrical contact applications. In this work, multiphase AlCrCuFeNi2.5 high‐entropy alloy (HEA) reinforcements are incorporated into CuCrZr matrix via spark plasma sintering (SPS) and annealing ...
Tao Hong +8 more
wiley +1 more source