Converters and method for intermittent forces energy conversion into electric power and damping excessive forces are presented. The converters employ various exemplified electromagnetic controllable transducers comprising multi-magnets inductors and multi-teeth armature, transforming sea wave's and wind's motion into electricity; base, impelling, and control means. The transducers are combinable with means translating the motion into linear, revolving, swinging movements. Transducer's cooling subsystems are exemplified. The base means are described, including fixed, floatable, and containing virtual vessels of variable parameters and expandable extensions. The impellers include floatable, fixed, adjustable. The control means include sensors measuring wave's and converter's parameters; control units adaptively regulating electric power production, and absorbing the excessively powerful waves' energy, depending on their changing parameters. Stabilizer-generators for base means are disclosed, comprising chambers fillable with rotating water pumped in during storms, then recuperating the rotational energy into electricity through MHD-generators. Some converters include electrolyzer hydrogen production and storage means.