Linear superconducting generators for wave energy converters

Direct-drive superconducting linear generators can be an alternative for wave-energy converter power take-off systems. A novel superconducting generator topology is presented. The generator has a stationary superconducting field winding fixed to modular magnetic cores. The translator is composed of air-cored copper windings. The generator is suitable for low-speed, high-torque applications. A 640-kW linear generator is designed. The design is validated using finite element analysis tools and the specifications of the generator are presented.