Construction of a Tool for Assembling Inner Stator Segments for a Wave Power Generator

Abstract: A new type of wave power generator is beingdeveloped at KTH. This generator has inner stator segmentswhich consist of strong neodymium magnets and electrical steel.These are glued together in stacks with electrical steel separatingeach magnet, and the magnets are oriented with opposingmagnetic fields to the nearest magnet above and below. Inthis configuration, each piece of electrical steel connected tothe pole of a magnet becomes one pole. 19 magnets and 20pieces of electrical steel compose one phase of 20 poles, andthree phases are then stacked with glass fibre spacers calledphase blocks, creating an inner stator segment. This projectaimed to design a tool suitable for assembling these strongmagnets into rows and eventually full inner stator segments.To specify the problems and to analyse the different magneticforces present, electromagnetic simulations were made using thesoftware COMSOL Multiphysics. The results showed differentforces between the poles when varying the position of one pole.Based on the results, conclusions were made of how the mountingtool had to function. A design of the mounting tool was thenmade, using the software SolidWorks. The tool was designed toassemble one whole inner stator segment.