Frequency Response Characteristic Analysis of SSCI for DFIG-based Wind Farms Considering Rotor Speed Control Based on Complex Torque Coefficients method

2019 ◽  
Author(s):  
Jicheng Zhou ◽  
Xiaotao Peng ◽  
Peng Luo ◽  
Kai Liang ◽  
Zhen Zhang ◽  
...  
Keyword(s):  
Frequency Response ◽  
Wind Farms ◽  
Speed Control ◽  
Response Characteristic ◽  
Rotor Speed ◽  
Frequency Response Characteristic ◽  
Characteristic Analysis ◽  
Complex Torque Coefficients

scholarly journals Frequency Response Characteristic (FRC) Curve and Fast Frequency Response Assessment in High Renewable Power Systems

2020 ◽  
Author(s):  
Shutang You
Keyword(s):  
Power Systems ◽  
Frequency Response ◽  
Real Time ◽  
Response Assessment ◽  
Response Characteristic ◽  
Assessment Method ◽  
Frequency Response Characteristic ◽  
Dynamic Simulations ◽  
Renewable Power ◽  
Response Performance

This letter introduces a frequency response characteristic (FRC) curve and its application in high renewable power systems. In addition, the letter presents a method for fast frequency response assessment and frequency nadir prediction without performing dynamic simulations using detailed models. The proposed FRC curve and fast frequency response assessment method are useful for operators to understand frequency response performance of high renewable systems in real time.

Design and Analysis of Compound Multilayer Metamaterial Filter in THz Region

2017 ◽  
Vol 872 ◽  
pp. 293-299 ◽  
Author(s):  
Wu Pan ◽  
Jun Zhang ◽  
Xuan Yu ◽  
Wei Zeng
Keyword(s):  
Frequency Response ◽  
Incident Angle ◽  
Metal Layer ◽  
Near Field ◽  
Response Characteristic ◽  
Center Frequency ◽  
Pass Band ◽  
Frequency Response Characteristic ◽  
Two Factors ◽  
Metal Layers

A periodic microstructure with dielectric and metal layers is proposed to obtain a bandpass filter. The multilayer microstructure is compounded of ring cross slot and cross slot. The center frequency of the filter is 0.338THz with a 3dB bandwidth of 75.62GHz. The maximum insertion loss in the pass band reaches 0.60dB. The bandedge transitions of the rejection bands are 232dB/THz and 176dB/THz, respectively. Furthermore, the physical mechanism of near field distribution and the influence of two factors (the number of metal layer and dielectric layer) on the passband have been studied. Meanwhile, the frequency response is analyzed for different incident angles and polarizations. The frequency response characteristic is insensitive to the polarization, and a good performance for incident angle of the transmission is obtained. It can be applied to THz atmospheric communication system.

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