Stator permanent magnet transverse flux linear generator for direct drive type wave power generation

Abstract

The invention discloses a stator permanent magnet transverse magnetic flux linear generator for direct drive type wave power generation. The generator comprises an outer stator; the inner part of the outer stator is hollow; an inner stator is sleeved with the outer stator; a composite magnetic field is formed between the inner stator and the outer stator; rotors distributed in an array are arranged between the inner stator and the outer stator; and the rotors reciprocate along straight lines to cut magnetic induction lines between the inner stator and the outer stator. According to the generator, the outer stator and the inner stator are arranged to be of an axial lamination structure, so that eddy currents can be effectively blocked; the machining of the generator is easy, and permanent magnets are fixed to the inner stator alternately, armature windings are arranged on the outer stator, and the rotors with magnetic pieces and diamagnetic pieces distributed in a staggered mode are adopted, and therefore, in the long-stroke occasion of the generator, the number of applied permanent magnets can be decreased, and the permanent magnet utilization rate can be improved; and compared with rotors composed of permanent magnets, the rotors composed of the magnetic sheets and the diamagnetic sheets are easy to machine.

Description

technical field [0001] The invention relates to the field of direct drive wave generators, in particular to a stator permanent magnet transverse flux linear generator for direct drive wave power generation. Background technique [0002] Wave energy can be converted into electrical energy through different wave power generation devices. Among them, direct drive wave power generation devices are considered to have broader development prospects because of the reduction of intermediate transmission components, simpler structure and higher efficiency. Linear generators are widely used in direct-drive wave power generation systems, and the current research hotspot is to improve the power density of linear motors. The transverse flux permanent magnet linear motor is a kind of variable reluctance permanent magnet linear motor, the direction of the magnetic flux is perpendicular to the direction of motion, and the power density of the motor can be improved by increasing the number of...

AI Technical Summary

Problems solved by technology

[0003] The traditional transverse flux motors are basically mover permanent magnet type, that is, the permanent magnet is located on the mover, and the three-phase symmetrical back electromotive force is obtained by changing the permanent magnet arrangement. The mover permanent magnet type can obtain a larger flux linkage, but Not suitable for long travel occasions

In the case of long strokes, with the increase of the length of the mover, the amount of permanent magnets is also greatly increased, which increases the cost of the motor, and the utilization rate of permanent magnets is very low

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