Contra-rotating ocean current energy generator set with planetary gear train and generator in coupling connection

By adopting a coupling structure of the planetary wheel train and generator coupling in a low-flow current energy generator set, the generator housing and rotation shaft are reversely rotated, forming a dual-rotor motor form, solving the problems of low power generation efficiency and large starting flow rate of low-flow current energy generator sets, and improving the power generation efficiency and starting performance.

CN119844282AActive Publication Date: 2025-04-18ZHEJIANG UNIV
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Patent Information

Application Number
CN202411966056.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-04-18
Estimated Expiration
2044-12-30

AI Technical Summary

Technical Problem

The low-flow current energy generator set has low power generation efficiency and high starting flow rate, making it difficult to effectively capture the energy of low-flow current, and the starting process is greatly affected by friction torque.

Method used

The counter-rotation current energy generator set is connected to the planetary wheel train and generator, which is fixed through the planetary carrier, the sun gear is connected to the generator housing, the inner ring is connected to the generator shaft, and the generator shaft is connected to the impeller shaft through a magnetic coupling, so as to achieve the reverse rotation of the generator housing and the rotating shaft, forming a double rotor motor form, increasing the relative speed of the generator.

Benefits of technology

It improves the relative speed of the generator, enhances the power generation efficiency, reduces friction loss during startup, and improves the starting characteristics of low-flow current energy generator sets.

✦ Generated by Eureka AI based on patent content.

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Abstract

A contra-rotating ocean current energy generator set with a planetary gear train and a generator connected in a coupling mode comprises an impeller, a magnetic coupling, the planetary gear train, a coreless axial magnetic flux permanent magnet synchronous motor and a waterproof shell, and the magnetic coupling, the planetary gear train and the coreless axial magnetic flux permanent magnet synchronous motor are all installed in the waterproof shell. The impeller is installed outside the front end portion of the waterproof shell through an impeller shaft, the planetary gear train comprises a planet carrier, an inner gear ring, a planet gear and a sun gear, the planet carrier is fixedly arranged, the sun gear is connected with a generator shell, the inner gear ring is connected with a generator rotating shaft, and the generator rotating shaft is connected with the impeller shaft through a magnetic coupling. Reverse rotation of the generator shell and the generator rotating shaft can be realized, one stator of the motor is changed into a rotor which rotates reversely, a double-rotor motor form is formed, and the relative rotating speed of the generator is increased, so that the efficiency is improved.
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Citation Information

Patent Citations

  • Double-impeller magnetic coupling water-flow power generator

    CN106812652A

  • Non-contact magnetic-driven clockwise-and-anticlockwise rotation hydroelectric generator

    CN109441697A

  • Contra-rotating paddle ocean current energy power generation device applying magnetic coupling

    CN113623113A

  • High-efficiency stator and rotor planetary gear counter-rotating generator

    CN203050995U

  • Epialternator

    GB0624591D0