Results 31 to 40 of about 5,545 (119)
Gaoya dianqi, 2012 基于Z拓扑的逆变系统,需在开关控制信号中加入直通信号。传统的滞环控制算法无法实现。针对这一局限,提出一种新的适用于Z拓扑的定频电流滞环控制策略。该策略保留了传统滞环控制的优点;采用定频控制,降低了系统损耗,便于滤波;有了Z源的升压作用,系统功率输出能力明显提高。通过MATLAB仿真,并经过实验验证,证明了该策略的可行性。
施胜丹, 黄金军
doaj
Functional Ecology, Volume 40, Issue 3, Page 706-719, March 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Stand functional diversity (RaoQ) and stand functional composition in terms of the functional traits of the component species (CWM trait) are critical for ecosystem processes and functioning, such as litter decomposition and associated nutrient cycling.
Bai‐Yu Yang +12 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang +9 more
wiley +1 more source
基于瞬时功率平衡和负序前馈控制的DSTATCOM电压控制策略方法
Gaoya dianqi, 2008 配电静止同步补偿器（DSTATCOM）通过向公共连接点注入无功功率可以调节公共连接点的电压,使之满足电压合格的要求、笔者首先根据DSTATCOM系统中的瞬时功率平衡理论推导出了DSTATCOM用于控制电压时的直接电压控制策略。在该控制策略中,无需电流检测电路,跟传统的串级控制相比较具有控制简单、响应速度快等优点。然后针对电网电压不平衡对DSTATCOM的影响,在基于瞬时功率平衡的直接电压控制的基础上,引入了负序电压的前馈控制策略,避免了DSTATCOM因电网电压不平衡造成的过流而退出运行 ...
唐杰 +4 more
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Smart Biomaterials and Dressings for the Treatment of Chronic Inflammatory Skin Diseases
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Chronic inflammatory skin diseases, encompassing immune‐inflammatory conditions and infection‐associated dermatoses, pose significant clinical challenges due to high prevalence, recurrence, and therapeutic resistance, affect over 30% of the global population.
Zehao Lan +5 more
wiley +1 more source
Gaoya dianqi, 2016 提出一种模块化多电平结构应用于动态电压补偿器的新技术。模块化多电平结构易扩展,便于实现,且具有公共直流母线,能够实现四象限运行。文中对模块化多电平动态电压补偿器的拓扑结构和工作特性进行介绍和理论分析。通过对几种补偿策略、子模块电容电压控制策略和MMC逆变单元调制策略的对比介绍,提出了适用于模块化多电平动态电压补偿器的同相补偿、子模块电容电压分层控制和载波移相PWM调制的控制策略。利用PSCAD软件搭建仿真模型,通过仿真分析,验证了模块化多电平动态电压补偿器控制策略的有效性和可行性。
王宝安, 邢珏, 商姣, 万杰星
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The development of high‐performance electromagnetic protection materials integrating broadband absorption and effective shielding capabilities is hindered by challenges in simultaneously optimizing multiple electromagnetic properties through conventional material designs.
Changlong Du +9 more
wiley +1 more source
Gaoya dianqi, 2018 整流侧采用电网换相型换流器（line commutated converter,LCC）,逆变侧采用模块化多电平换流器（modular multilevel converter,MMC）的混合型直流输电系统,结合LCC和MMC的优点,尤其适用于特高压直流输电应用场合。为了确保正常状态和故障状态下的稳定运行,文中针对混合型直流输电系统的控制策略进行研究。文中首先针对一个LCC整流站,两个MMC逆变站构成的三端混合直流系统,介绍了数学模型和整个直流系统的基本控制策略。然后针对基本控制策略下 ...
陈凌云 +6 more
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MXene‐Based Electromagnetic Attenuation Materials in Microwave and Terahertz Bands
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT MXenes exhibit considerable potential for developing high‐performance electromagnetic (EM) shielding and absorption materials operating across microwave and terahertz frequencies, due to their tunable surface chemistry and exceptional charge carrier transport properties.
Guozheng Zhang +9 more
wiley +1 more source