An ocean wave energy converter system comprises an armature and a plurality of magnets which move relative to each other in response to ocean waves pushing on a spar and/or float to which the armature and the plurality of magnets are coupled. Components of the system comprise stacked rings and/or radial laminations. The armature can feature a variety of pole tips. Various methods can be used to assemble components from radial laminations. Air gaps in wire coils of the armatures can be filled with one or more materials that selectively alter the magnetic permeability of the wire coils.
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT
 This invention was made with government support under: contract number DE-FG02-05-ER86257, awarded by the Department of Energy; award number 0300386, awarded by the National Science Foundation; award number NA16RG1039, awarded by the National Oceanic and Atmospheric Administration; and contract number N62473-07-C-4069, awarded by the Department of the Navy. The government has certain rights in the invention.