Performance Analysis for Estimating a Target's Relaxation Frequencies From Frequency-Domain Electromagnetic Induction Data

2021 ◽  
pp. 1-5
Author(s):  
Andrew J. Kerr ◽  
Waymond R. Scott ◽  
James H. McClellan
Keyword(s):  
Performance Analysis ◽  
Frequency Domain ◽  
Electromagnetic Induction

scholarly journals A phase-locked loop using ESO-based loop filter for grid-connected converter: performance analysis

2021 ◽  
Author(s):  
Baoling Guo ◽  
Seddik Bacha ◽  
Mazen Alamir ◽  
Julien Pouget
Keyword(s):  
Performance Analysis ◽  
Frequency Domain ◽  
Low Frequency ◽  
Experimental Tests ◽  
Frequency Measurement ◽  
Phase Locked Loop ◽  
Frequency Domain Analysis ◽  
Loop Filter ◽  
Control Stability ◽  
Unbalanced Grid

AbstractAn extended state observer (ESO)-based loop filter is designed for the phase-locked loop (PLL) involved in a disturbed grid-connected converter (GcC). This ESO-based design enhances the performances and robustness of the PLL, and, therefore, improves control performances of the disturbed GcCs. Besides, the ESO-based LF can be applied to PLLs with extra filters for abnormal grid conditions. The unbalanced grid is particularly taken into account for the performance analysis. A tuning approach based on the well-designed PI controller is discussed, which results in a fair comparison with conventional PI-type PLLs. The frequency domain properties are quantitatively analysed with respect to the control stability and the noises rejection. The frequency domain analysis and simulation results suggest that the performances of the generated ESO-based controllers are comparable to those of the PI control at low frequency, while have better ability to attenuate high-frequency measurement noises. The phase margin decreases slightly, but remains acceptable. Finally, experimental tests are conducted with a hybrid power hardware-in-the-loop benchmark, in which balanced/unbalanced cases are both explored. The obtained results prove the effectiveness of ESO-based PLLs when applied to the disturbed GcC.

Advances in Frequency Domain Electromagnetic Induction Techniques for Improved Discrimination and Identification of Buried Unexploded Ordnance

2000 ◽  
Author(s):  
Dean Keiswetter ◽  
Stephen Norton ◽  
I. J. Won ◽  
Ernesto R. Cespedes ◽  
John C. Morgan
Keyword(s):  
Frequency Domain ◽  
Electromagnetic Induction ◽  
Unexploded Ordnance

Frequency domain electromagnetic induction survey in the intertidal zone: Limitations of low-induction-number and depth of exploration

2014 ◽  
Vol 100 ◽  
pp. 14-22 ◽  
Author(s):  
Samuël Delefortrie ◽  
Timothy Saey ◽  
Ellen Van De Vijver ◽  
Philippe De Smedt ◽  
Tine Missiaen ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Intertidal Zone ◽  
Electromagnetic Induction

Sensitivity of multi-coil frequency domain electromagnetic induction sensors to map soil magnetic susceptibility

2010 ◽  
Vol 61 (4) ◽  
pp. 469-478 ◽  
Author(s):  
D. Simpson ◽  
M. Van Meirvenne ◽  
E. Lück ◽  
J. Rühlmann ◽  
T. Saey ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Frequency Domain ◽  
Electromagnetic Induction ◽  
Soil Magnetic Susceptibility

Frequency domain model for zero-sequence electromagnetic harmonic filter performance analysis

2014 ◽  
Vol 25 (10) ◽  
pp. 2325-2339 ◽  
Author(s):  
José C. Oliveira ◽  
Luís C. O. Oliveira ◽  
Fernando N. Belchior ◽  
Rodrigo N. Oliveira ◽  
João Areis F. Barbosa
Keyword(s):  
Performance Analysis ◽  
Frequency Domain ◽  
Domain Model ◽  
Filter Performance ◽  
Harmonic Filter ◽  
Zero Sequence
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