Results 61 to 70 of about 3,004 (111)

[Rehabilitation guidelines and specifications for traumatic spinal cord injury (2025 edition)]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Professional Committee Of Spine And Spinal Cord Injury Rehabilitation China Association Of Rehabilitation Of Disabled Persons   +3 more
europepmc   +1 more source

基于串联滞后校正PLL宽频特性的DFIG阻抗重塑方法

open access: yesGaoya dianqi
针对锁相环(phase-locked loop,PLL)与电网强耦合导致双馈风机(double-fed induction generator,DFIG)在弱电网下阻抗失配易引发振荡风险的问题,提出基于串联滞后校正PLL的DFIG阻抗重塑方法。首先,通过建立DFIG阻抗模型并分析其波特图,发现考虑电网阻抗才能准确评估潜在振荡风险。然后,在考虑电网阻抗情况下,将串联滞后校正环节引入PLL以补偿振荡频段相位裕度,并利用全通滤波器校正DFIG工频相位偏移以提升并网稳定性。最后,为验证所提方法的有效性,基于RT-
徐恒山, 陈雷
doaj  

2019 年德国汉诺威工业展综览与未来发展趋势 [PDF]

open access: yes, 2019
付爽   +6 more
core  

[Verbenalin ameliorates intestinal inflammation and colitis in a mouse model of Crohn's disease by inhibiting the PI3K-AKT pathway]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
Huang L   +8 more
europepmc   +1 more source

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