A fully superconducting primary excitation linear generator for direct drive wave power generation

Abstract

The invention discloses a full-superconducting primary excitation linear generator for direct-drive type wave power generation. The full-superconducting primary excitation linear generator comprises a primary stator and a secondary mover, wherein the primary stator comprises multiple groups of stator units arranged in a straight line; each stator unit comprises a U-shaped core, primary armature windings and primary exciting windings; the U-shaped core comprises two primary cores; an opening of the U-shaped core faces the secondary mover; the primary armature windings are arranged in the primary cores; the primary exciting windings are arranged in the U-shaped core; the secondary mover is the core which does not contain a winding and has a cogging structure; and a corresponding cogging structure is arranged on each primary core. According to the full-superconducting primary excitation linear generator, an arc-shaped structure exciting winding sleeves the outside of each primary core; and a cooling system does not move, so that the complexity level is reduced. The magnetic field conversion rate and the terminal voltage can be increased by a multi-tooth structure secondary; the defect of a low low-speed voltage is compensated; and by unequally-spaced teeth, the voltage frequency and amplitude generated when the generator moves to the end part are increased by reducing the end-part tooth pitch.

Description

technical field [0001] The invention belongs to the field of linear generators, and relates to a primary excitation linear generator applied to a direct-drive wave power generation system. Background technique [0002] Ocean energy is widely distributed on the earth's surface, and wave energy is a kind of ocean energy with wide distribution, high energy density, highest grade and easiest direct utilization. Wave power generation does not make any noise, and there is no risk of oil spills. Wave power generation will open a new era of pure energy. Wave energy power generation technology can be directly applied to power supply systems for marine observation instruments, power supply systems for military and civilian test buoys, power supply systems for Dokdo, power supply systems for operating platforms, and large-scale grid-connected ocean energy power generation systems. The direct drive reciprocating wave power generation device adopts the direct combination of energy harv...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of low-speed direct drive of wave power generation, the primary energy conversion has the characteristics of large thrust and low speed, and the air gap of the motor is much larger than that of the rotating motor, so that the linear generators with traditional permanent magnet structure and electric excitation structure are bulky. , Disadvantages of low power density

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