contactless power transfer
contactless power transfer
(OP)
hello
could somebody tell if there is a company wich sells systems for contactles power transfer?
i need to transfer about 80W-100W at 24V. input does not matter.
thank you.
could somebody tell if there is a company wich sells systems for contactles power transfer?
i need to transfer about 80W-100W at 24V. input does not matter.
thank you.





RE: contactless power transfer
Gunnar Englund
www.gke.org
RE: contactless power transfer
does not move, but has to be removable.
it should transfer power from a basestaion to a portable terminal.
RE: contactless power transfer
http://www.vahleinc.com/products/VahleCPS.html
has standard equipment for power transmissopn over short distances. They may be on the large side, but they probably have smaller devices as well. Siemens used to have good app notes about these systems. Cannot find them any more. Probably because Siemens Ferrite operation changed name to something that I cannot remember any more.
Gunnar Englund
www.gke.org
RE: contactless power transfer
EPCOS emerged from Siemens Matsushita Components, a joint venture founded in 1989 by Siemens and Matsushita. Since EPCOS went public on October 15, 1999, both former parent companies have remained important shareholders, each holding 12.5% of equity. EPCOS was floated on the Frankfurt and New York Stock exchanges simultaneously. Since March 2003, EPCOS has been one of the largest companies in the new TecDAX index of technology stocks.
maybe?
RE: contactless power transfer
Gunnar Englund
www.gke.org
RE: contactless power transfer
Also, the core halves are not going to be as physically small as normal contacts would be. Maybe several square cm of coupling area (a guess) to replace a tiny connector.
RE: contactless power transfer
i even find the application notes you mentioned!
http://www
i think this will bring me a step futher!
RE: contactless power transfer
size does not matter.
but the leakage into the RF spectrum worries me.this might be a problem.
i did not find any papers concerning this issue?
RE: contactless power transfer
See the following list of publications:
ht
look for publications from
Thomas Kalker
Albert Esser
Andreas Nagel
RE: contactless power transfer
There's a joke in there struggling to get out... ...but I'll pass this time.
The advantage of low frequencies (60Hz, 400 Hz, etc.) is that nobody cares if it leaks. The advantage of high frequencies (40kHz, 100kHz, etc.) is that the cores would be much smaller. There is probably a frequency in the middle that will give you reasonably small cores and still be below the range where anyone cares about RF leakage.
Also, watch out for annoying acoustic leakage as well.
Can your interface include shielding, or does it need to be smooth surfaces?
RE: contactless power transfer
according my research a frequency around 80-100khz should be used to achiev a good performance.
in this phase of the project the surface can have every shape needed.
RE: contactless power transfer
The concept was known as 'CETS' or Contactless Energy Transfer System, with my bit being known as 'CETS for CFL'. I don't know who is still there - the department was BC84 Power Electronics & Drives Group who might be able to help.
www.era.co.uk
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