Linear motor direct-driven wave power generation system

Abstract

The invention discloses a linear motor direct-driven wave power generation system. The system includes a mechanical energy extraction module, a linear generator set module and an electric energy postprocessing module. The mechanical energy extraction module drives a buoy to move by waves, and the buoy is connected with a linear motor rotor iron core through three link rods; the linear generator set module drives the linear motor rotor iron core to vertically move through a hinge connected with a second driven rod, a path that magnetic lines of force pass which are emitted by a permanent magnet inside the motor changes accordingly, so that through constant change of the magnetic flux of copper coils in motor outer stator slots, three phases of approximately sinusoidal counter potential waveforms with constantly changing frequency and amplitude are generated and output; and then rectification, filtering, energy storage and inversion are performed through the electric energy postprocessing module, and usable three-phase alternating current with fixed frequency and amplitude is finally output and is used for electric energy supply of an offshore area or grid-connection processing.

Description

technical field [0001] The invention belongs to the field of ocean wave power generation, in particular to a linear motor direct drive ocean wave power generation system. Background technique [0002] Energy and the environment are two hot topics in today's society. As a renewable green energy with abundant reserves, wave energy has its special advantages compared with solar energy and wind energy, which are easier to use and have many commercial products. . Not only is the energy distributed widely, but the average energy flow density is far greater than that of solar and wind energy. Therefore, the research on wave energy has a good development prospect and development significance. [0003] Most of the previous wave power generation devices used rotary generators to convert the mechanical energy of the waves into electrical energy output, but the wave motion is a kind of linear motion, and the rotary motor needs to add a conversion device in the middle to convert the li...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low energy conversion efficiency of the existing wave power generation device, and provide a new type of linear motor direct drive type wave power generation system, which uses a linear motor instead of a rotary motor, and uses the vertical motion of the wave to directly drive the motor mover Cutting up and down improves the efficiency of energy utilization; it can simplify the four-level energy conversion process into a three-level conversion process, which improves energy utilization efficiency; at the same time, due to the omission of hydraulic pumps and other devices, it can also ensure that the power generation system is clean and pollution-free

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