Compact controllable ocean current generation device

Abstract

The invention discloses a compact controllable ocean current generation device. By adopting a dual cascaded planetary gear train and a control motor, the time varying power of an ocean current impeller is converted to electric power of an electric generator to be output. By effectively controlling the rotating speed of the control motor, the ocean current impeller can trace the optimal rotating speed value in real time, accordingly, a unit is operated on the optimal power point, and the largest ocean current power catching is achieved. In addition, the rotating speed input to the electric generator can be kept stable, and the electric generator is operated in a high-efficiency interval for a long time.

Description

technical field [0001] The invention relates to the technical field of power generation, in particular to an ocean current power generation device. Background technique [0002] Ocean current energy has large reserves, high energy density, and strong predictability. It has gradually become an emerging industry to solve global problems such as energy crisis and climate warming. The ocean current energy generator set is a new type of power generation device that converts the kinetic energy contained in the seawater flow into electrical energy. Among them, the horizontal axis current generator set has high primary energy capture efficiency and compact mechanical structure, and currently occupies a dominant position in the domestic and foreign markets. Horizontal shaft current generator sets can also be divided into mechanical gearbox transmission units and hydraulic transmission units according to different transmission modes; according to whether the impeller and generator (o...

AI Technical Summary

Problems solved by technology

[0003] The marine current generator set based on gearbox transmission uses a gearbox with a fixed gear ratio to achieve speed-up transmission, which cannot effectively realize the stepless speed control and adjustment of the unit speed with the current flow rate, so the maximum power point tracking control needs to be further improved.

Sea current generator sets based on direct drive transmission have a series of problems such as the direct drive motor is too large, the amount of copper used is high, and the production cost is too high.

Although the ocean current generator set based on hydraulic transmission solves the problem of high failure rate of gearbox transmission, the overall efficiency of the unit is obviously lower than that of pure mechanical transmission, and there are also problems such as high-pressure hydraulic oil leakage and a large amount of pollution.

[0004] Therefore, the various transmission and control methods used in the existing ocean current energy generating sets have certain problems and shortcomings, such as low efficiency, large volume, high cost and hydraulic pollution, etc., and the solution of these problems is also There is a need for a new type of transmission that not only has high transmission efficiency, but also can control the infinitely variable speed

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