scholarly journals Highly Developed Fiber Fault Isolation Technique for Branched Optical Fibers of PONs Using High Spatial Resolution OTDR and Frequency Domain Analysis

2005 ◽  
Vol 33 (9) ◽  
pp. 609-614 ◽  
Author(s):  
Yoshitaka ENOMOTO ◽  
Hisashi IZUMITA ◽  
Minoru NAKAMURA
Keyword(s):  
Frequency Domain ◽  
Spatial Resolution ◽  
Optical Fibers ◽  
High Spatial Resolution ◽  
Domain Analysis ◽  
Frequency Domain Analysis ◽  
Fault Isolation ◽  
Isolation Technique

Preliminary frequency-domain analysis for the reconstructed spatial resolution of muon tomography

2014 ◽  
Vol 9 (11) ◽  
pp. C11017-C11017 ◽  
Author(s):  
B. Yu ◽  
Z. Zhao ◽  
X. Wang ◽  
Y. Wang ◽  
D. Wu ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Spatial Resolution ◽  
Domain Analysis ◽  
Frequency Domain Analysis ◽  
Muon Tomography

scholarly journals Analysis of Three-Phase Wye-Delta Connected LLC

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3606
Author(s):  
Jing-Yuan Lin ◽  
Chuan-Ting Chen ◽  
Kuan-Hung Chen ◽  
Yi-Feng Lin
Keyword(s):  
Frequency Domain ◽  
Time Domain ◽  
Operation Time ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Frequency Domain Analysis ◽  
Complete Analysis ◽  
Plane Analysis ◽  
Analysis Methods ◽  
Three Phase

Three-phase wye–delta LLC topology is suitable for voltage step down and high output current, and has been used in the industry for some time, e.g., for server power and EV charger. However, no comprehensive circuit analysis has been performed for three-phase wye–delta LLC. This paper provides complete analysis methods for three-phase wye–delta LLC. The analysis methods include circuit operation, time domain analysis, frequency domain analysis, and state–plane analysis. Circuit operation helps determine the circuit composition and operation sequence. Time domain analysis helps understand the detail operation, equivalent circuit model, and circuit equation. Frequency domain analysis helps obtain the curve of the transfer function and assists in circuit design. State–plane analysis is used for optimal trajectory control (OTC). These analyses not only can calculate the voltage/current stress, but can also help design three-phase wye-delta connected LLC and provide the OTC control reference. In addition, this paper uses PSIM simulation to verify the correctness of analysis. At the end, a 5-kW three-phase wye–delta LLC prototype is realized. The specification of the prototype is a DC input voltage of 380 V and output voltage/current of 48 V/105 A. The peak efficiency is 96.57%.

scholarly journals Amplitude Design of Perturbation Signal in Frequency-Domain Analysis of Grid-Connected Systems

2020 ◽  
Vol 53 (2) ◽  
pp. 13161-13166
Author(s):  
Henrik Alenius ◽  
Roni Luhtala ◽  
Tomi Roinila
Keyword(s):  
Frequency Domain ◽  
Domain Analysis ◽  
Frequency Domain Analysis
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