scholarly journals Setting Scheme and Experimental Verification of Multi-Input PSS Parameters for Damping Low Frequency Power Swing in Multi-machine Power System

2002 ◽  
Vol 122 (1) ◽  
pp. 137-144 ◽  
Author(s):  
Yoshihiro Kitauchi ◽  
Haruhito Taniguchi ◽  
Takashi Shirasaki ◽  
Yoshinori Ichikawa ◽  
Masahiko Amano ◽  
...  
Keyword(s):  
Power System ◽  
Experimental Verification ◽  
Low Frequency ◽  
Power Swing ◽  
Low Frequency Power ◽  
Frequency Power

Experimental verification of multi-input PSS with reactive power input for damping low frequency power swing

1999 ◽  
Vol 14 (4) ◽  
pp. 1124-1130 ◽  
Author(s):  
Y. Kitauchi ◽  
H. Taniguchi ◽  
T. Shirasaki ◽  
Y. Ichikawa ◽  
M. Amano ◽  
...  
Keyword(s):  
Experimental Verification ◽  
Reactive Power ◽  
Low Frequency ◽  
Power Input ◽  
Power Swing ◽  
Low Frequency Power ◽  
Frequency Power

scholarly journals Toward asleep DBS: cortico-basal ganglia spectral and coherence activity during interleaved propofol/ketamine sedation mimics NREM/REM sleep activity

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Jing Guang ◽  
Halen Baker ◽  
Orilia Ben-Yishay Nizri ◽  
Shimon Firman ◽  
Uri Werner-Reiss ◽  
...  
Keyword(s):  
Basal Ganglia ◽  
Rem Sleep ◽  
Standard Procedure ◽  
Low Frequency ◽  
Nrem Sleep ◽  
Sleep Cycle ◽  
Advanced Parkinson’S Disease ◽  
Low Frequency Power ◽  
The Brain ◽  
Frequency Power

AbstractDeep brain stimulation (DBS) is currently a standard procedure for advanced Parkinson’s disease. Many centers employ awake physiological navigation and stimulation assessment to optimize DBS localization and outcome. To enable DBS under sedation, asleep DBS, we characterized the cortico-basal ganglia neuronal network of two nonhuman primates under propofol, ketamine, and interleaved propofol-ketamine (IPK) sedation. Further, we compared these sedation states in the healthy and Parkinsonian condition to those of healthy sleep. Ketamine increases high-frequency power and synchronization while propofol increases low-frequency power and synchronization in polysomnography and neuronal activity recordings. Thus, ketamine does not mask the low-frequency oscillations used for physiological navigation toward the basal ganglia DBS targets. The brain spectral state under ketamine and propofol mimicked rapid eye movement (REM) and Non-REM (NREM) sleep activity, respectively, and the IPK protocol resembles the NREM-REM sleep cycle. These promising results are a meaningful step toward asleep DBS with nondistorted physiological navigation.

Research on Low Frequency Power Loss of IGBT

2020 ◽  
Author(s):  
Xiao-Liang Chen ◽  
Tian Chen ◽  
Zhong-Jian Qian ◽  
Feng Xu ◽  
Wei-Feng Sun
Keyword(s):  
Power Loss ◽  
Low Frequency ◽  
Low Frequency Power ◽  
Frequency Power

Cortical low‐frequency power correlates with behavioral impairment in animal model of focal limbic seizures

Epilepsia ◽  
2021 ◽  
Author(s):  
Abhijeet Gummadavelli ◽  
Reese Martin ◽  
Derek Goshay ◽  
Lim‐Anna Sieu ◽  
Jingwen Xu ◽  
...  
Keyword(s):  
Animal Model ◽  
Low Frequency ◽  
Behavioral Impairment ◽  
Limbic Seizures ◽  
Low Frequency Power ◽  
Frequency Power

Low-frequency heating of doublets

1981 ◽  
Vol 25 (1) ◽  
pp. 133-143 ◽  
Author(s):  
T. H. Jensen ◽  
F. W. McClain ◽  
H. Grad
Keyword(s):  
Physical Model ◽  
Linear Theory ◽  
Low Frequency ◽  
Plasma Temperature ◽  
Auxiliary Heating ◽  
Power Sources ◽  
Axisymmetric Mode ◽  
Low Frequency Power ◽  
Frequency Power ◽  
Frequency Heating

Heating of a doublet plasma by driving an axisymmetric mode at low frequency may be an attractive means for auxiliary heating. The attractiveness of the method stems from (1) the low technology required for low-frequency power sources, (2) the fact that the field-shaping coils required for doublets may also be used as the antennae for transmitting the power, (3) the possibility of transmitting the power through a resistive vacuum wall, (4) the insensitivity to the plasma temperature and density and (5) the relative simplicity of the physical model. The utility of the concept depends on the existence of a special axisymmetric eigenmode in the resistive M.HD approximation which is used. This mode has nodes through the elliptic axes of the doublet equilibrium and an antinode at the hyperbolic axis. It is remarkable that the dissipation per cycle of this mode remains large at low plasma resistivity. This paper describes a linear theory for such heating.

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