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ANP032d, 2016-02-22, AnNa, CSo Page 1 of 26
APPLICATI ON NO TE
High Power Wireless Power Transfer
for the Industrial Environment
ANP032D, BY ANDREAS NADLER AND CEM SOM
1. Introduction_________________________________________________
As the presence of wireless power transfer technology increases in consumer electronics, the industrial and
medical industries are shifting focus towards this technology and its inherent advantages. As communication
interfaces are becoming increasingly wireless with technologies like WLAN and Bluetooth, wireless power
transfer has become a relevant option. Completely new approaches can be taken that not only offer obvious
technical advantages, but also open up possibilities for new industrial design. This technology offers new
concepts - especially in industrial sectors struggling with tough environmental conditions, aggressive cleaning
agents, heavy soiling and high mechanical stresses (e.g. ATEX, medicine, construction machines). For
instance, expensive and susceptible slip rings or contacts can be substituted. Another field of application is
with transformers, which have to satisfy special requirements, such as reinforced or doubled insulation.
The target of this Application Note is to demonstrate that easy-to-achieve solutions for wireless power transfer
of one hundred Watts or more are reachable using circuit technology, without the need of software or
controllers.
Figure 1 Wireless power coils from Würth Elektronik
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