Energy Transmission Over Break water – A Design Criterion? –

Author(s):  
P. Bade ◽  
H. Kaldenhoff
1980 ◽  
Vol 1 (17) ◽  
pp. 114
Author(s):  
P. Bade ◽  
H. Kaldenhoff

The wave transmission from seaside to lee of break waters depends on structural parameters as well as on the initial wave climate. Transmission coefficients for special boundary: conditions are known, but information about wave parameters are often not available or they cover often only special cases. Again a case study, undertaken for the break water at the proposed deep water harbour at Scharhoern/Neuwerk, Germany, documented this lack. The results of the case study using conservative wave parameters did not answer the important questions of energy transmission sufficiently, thus we investigated the characteristics of the initial and transmitted wave spectra. A special case was treated initially and subsequently more general situations were examined. These tests were carried out using a physical model of a length scale of 1:10 under conditions described by Froude's law.


2012 ◽  
Vol 132 (5) ◽  
pp. 686-690
Author(s):  
Yusuke Kanno ◽  
Kenji Tsuruta ◽  
Kazuhiro Fujimori ◽  
Hideki Fukano ◽  
Shigeji Nogi

1993 ◽  
Author(s):  
Michael McGuirk ◽  
Richard Aucoin ◽  
Mark Schattenberg ◽  
Robert Fleming ◽  
Henry Smith

2019 ◽  
pp. 56-61
Author(s):  
Huang ChunXiang ◽  
Henadiy Pavlov ◽  
Mykhailo Pokrovskyi ◽  
Andriy Obrubov ◽  
Iryna Vinnychenko

The research object is the electromagnetic processes in the semiconductor power converters based on the schemes with circuit commutation and containing resonant circuits of reactive elements and transformers with a small coupling coefficient. The research aim is to develop a technology for a fast wireless battery charging for the use in clean energy vehicles, which would be based on a resonant converter with a pulse-count adjustment with a phase shift control. The latter provides a high energy performance in a wide range of regulation and a low sensitivity to changes in the magnetic system parameters. This is a final report. The report presents the results of the work performed in accordance with the Terms of Reference for the second stage of the scientific and research work. The following theoretical problems have been solved: development of a mathematical model of a series resonant converter with a pulse-count adjustment for contactless inductive energy transmission, which provided a high accuracy for the studies of the electromagnetic processes in the power section of multi-circuit resonant converters for contactless energy transmission, as well as an opportunity to assess the energy parameters of multi-circuit converters at pulse-count adjustment; compilation of mathematical dependencies of the average input and output current values on the number of half-cycles of resonant oscillations during energy transmission to the circuit and energy dissipation, the supply voltage and the resonant circuit’s parameters, which allowed assessing the converter’s energy parameters over a wide control range; compilation of the dependencies of the converter’s output power and coefficient of efficiency on the number of halfcycles of resonant oscillations during energy transmission to the circuit and energy dissipation, on supply voltage and on the resonant circuit’s parameters, which made it possible to evaluate the efficiency of the pulse-count adjustment of resonant converters for contactless energy transmission; realization of a dynamic model of a resonant converter for contactless energy transmission in the form of transfer functions for small disturbances caused by fluctuations in supply voltage, which made it possible to estimate the effect of its instability on the quality of output current stabilization.


2013 ◽  
Author(s):  
James F. Reda ◽  
David M. Schmidt ◽  
Kimberly A. Glass ◽  
Molly A. Kyle

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