Improving the frequency response of ceramic dielectrics for high power applications in power electronic converters

Author(s):  
C.K. Campbell ◽  
J.D. van Wyk ◽  
M.F.K. Holm
2004 ◽  
Vol 13 (04) ◽  
pp. 941-955 ◽  
Author(s):  
ALFRED RUFER ◽  
PHILIPPE BARRADE ◽  
DAVID HOTELLIER ◽  
SYLVAIN HAUSER

A new feeding concept for electrical transportation systems is presented, based on supercapacitive energy storage. Supercapacitors are new and powerful components for energy storage. Compared with batteries, the amount of energy supercapacitors can store is low and does not allow large vehicle autonomy. Because supercapacitors have the property to be re-loadable in a few seconds, a sequential supply system has been developed, considering repetitive feeding at the stops. To solve the problem of the high power amount needed to reach short refill times, a solution is proposed, which consists of using an intermediary supercapacitive tank placed at fixed stations, which is refilled between the bus arrivals with a much lower power. In addition to the description of the needed power electronic converters, theoretical and experimental results are presented, defining the controlled profile of the instantaneous power level, in order to achieve a fast energy transfer between two supercapacitive tanks.


2006 ◽  
Vol 53 (2) ◽  
pp. 530-541 ◽  
Author(s):  
F. Forest ◽  
J.-J. Huselstein ◽  
S. Faucher ◽  
M. Elghazouani ◽  
P. Ladoux ◽  
...  

Electronics ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 9 ◽  
Author(s):  
Graziella Giglia ◽  
Guido Ala ◽  
Maria Di Piazza ◽  
Giuseppe Giaconia ◽  
Massimiliano Luna ◽  
...  

2018 ◽  
pp. 53-57 ◽  
Author(s):  
G. G. Savenkov ◽  
V. P. Razinkin ◽  
A. D. Mekhtiev

Applications of modern terminal loads and its relevant disadvantages are described in this paper. The decomposing method of wideband microwave high power microstrip loads design is proposed in this paper with purpose of matching quality improving. Multiple extension of multistage load bandwidth is provided by using of external matching circuit and internal matching inductive elements. The maximum reachable bandwidth of multistage load is estimated and optimal values of mathing circuit elements are founded on basis of equivalent lumped scheme. The topology of microstrip two-stage high power microwave load is developed and its frequency response, calculated via numeric electrodynamic modelling method is outlined in the paper. Modelling results show good matching quality of considered load at the frequency band below 3,5 GHz.


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