Abstract: The present invention relates to magnetic structures for wireless power transfers systems. In particular the invention relates to improved magnetic and ferrite layouts as well as pad designs and methods of predicting and preventing thermal failure of high-power ferrite structures. In part it relates to a wireless power transfer pad magnetic structure comprising at least two adjacent blocks are spaced apart by an inter-section spacing configured to reduce circulating flux in the layer. In part it relates to a wireless power transfer pad magnetic structure comprising a first surface configured to locate nearer a wireless power transfer coil than a second surface wherein the relative magnetic permeability of the magnetic structure increases with distance from the first surface. In part it relates to a method of preparing a magnetically permeable block for a wireless power transfer pad, the method comprising: thermally pre-cracking the magnetically permeable block.

Abstract: The present invention relates to magnetic structures for wireless power transfers systems. In particular the invention relates to improved magnetic and ferrite layouts as well as pad designs and methods of predicting and preventing thermal failure of high-power ferrite structures. In part it relates to a wireless power transfer pad magnetic structure comprising at least two adjacent blocks are spaced apart by an inter-section spacing configured to reduce circulating flux in the layer. In part it relates to a wireless power transfer pad magnetic structure comprising a first surface configured to locate nearer a wireless power transfer coil than a second surface wherein the relative magnetic permeability of the magnetic structure increases with distance from the first surface. In part it relates to a method of preparing a magnetically permeable block for a wireless power transfer pad, the method comprising: thermally pre-cracking the magnetically permeable block.

Abstract: A sensor placement algorithm uses process data to determine the optimal distribution of sensors in a distributed parameter manufacturing system. An automatic classification procedure maps any problems in the process to a predetermined set of process disturbances. A control procedure uses process data to determine the best control action that will ensure good system response. Methods for sensor placement, automatic decision tree classification, corrective action control and the apparatus to effectuate these respective methods are integrated into a design methodology.