Waffenschmidt, Eberhard (Philips Research, Aachen, Germany)
In urban centres, communication plays a big and growing role. To power communication means, inductive power transmission is proposed more and more also for consumer applications. In this work, limitations with respect to efficiency of the inductive system are investigated. As a conclusion, inductive power transmission in a larger space (e.g. a whole room) is very inefficient. On the other hand, inductive power transmission at a surface can be efficient as conventional power supplies. Based on this insight, an inductive power transmission pad has been designed and built, with the purpose to charge mobile devices like mobile phones. It can charge an arbitrary number of devices and allows free positioning of the devices on the pad. To provide a sufficient commercial base for such a product, the "Wireless Power Consortium" was founded with the aim to create an international industry standard for wireless charging of mobile devices.