Cylindrical double-layer winding linear permanent magnet synchronous generator

Abstract

The invention discloses a cylindrical double-layer winding linear permanent magnet synchronous generator. The cylindrical double-layer winding linear permanent magnet synchronous generator comprises shafts and outer iron cores, wherein the outer cylinders of the shafts are provided with a plurality of annular permanent magnets and the shafts are spaced from each other by using a first group of magnetic separation rings; and a plurality of outer windings in the same number as the annular permanent magnets are wound around the inner holes of the outer iron cores and the outer iron cores are spaced from each other by using a second group of magnetic separation rings. The centers of the shafts are provided with central holes; inner iron cores are arranged in the central holes; the outer cylinders of the inner iron cores are provided with inner windings which are spaced from each other by using a third group of magnetic separation rings; a spring is arranged between the inside surface of the inner iron cores and the shaft bottom surfaces of the central holes; end covers are arranged on the inner iron cores and the outer iron cores; and annular air gaps with the same height are reservedamong the outer windings, the permanent magnets and the inner windings respectively. The cylindrical double-layer winding linear permanent magnet synchronous generator adopts a slotless moving-magnetic type dual-stator structure, eliminates positioning force, and simultaneously has the characteristics of quick response, high permanent magnet utilization rate and the like, does not need an intermediate conversion device, converts rectilinear motion into electric quantity and outputs the electric quantity, can be used in the fields such as pistons, wave power generation and the like, saves energy and is environmentally-friendly.

Description

technical field [0001] The invention relates to a linear permanent magnet synchronous generator, in particular to a cylindrical double-layer winding linear permanent magnet synchronous generator. Background technique [0002] With people's attention to energy and environment, linear generators that can directly use the mechanical vibration of objects to generate electricity have gradually become a research hotspot at home and abroad. Different from traditional rotary generators, linear generators can directly convert linear motion in production and life into electrical energy, which not only reduces energy loss, but also expands the scope of application. Vibration is everywhere, such as the movement of pistons and the shaking of vehicles. In the utilization of ocean tides and wave energy, linear generators can directly generate alternating current through the up and down motion of the secondary. The simple and efficient direct energy conversion method promotes Development a...

AI Technical Summary

Problems solved by technology

[0004] 1. The cogging effect of the motor will generate positioning force, which affects the stability of the motor operation;

[0005] 2. The existence of the iron core increases the weight of the secondary and reduces the response speed of the motor;

[0006] 3. High iron consumption limits the improvement of motor efficiency and permanent magnet utilization

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