Direct-drive wave power generation device based on immersion type floater and power generation method

Abstract

The invention discloses a direct-drive wave power generation device based on an immersion type floater and a power generation method. The power generation device comprises a direct-drive motor, wherein a connecting shaft is arranged on the direct-drive motor; one end of the connecting shaft is in fastening connection with the direct-drive motor, and the other end of the connecting shaft is in fastening connection with the immersion type floater; floater cables which are distributed in an array are arranged below the immersion type floater; fixed columns which are distributed in an array are arranged below the direct-drive motor; the direct-drive motor comprises a damping disc; an outer stator is arranged on the damping disc; an inner rotor is arranged in the outer stator; the outer statorcomprises a stator yoke part; an inner cavity is formed in the stator yoke part; a groove is formed in the inner cavity in a communicating mode; and a stator coil is in fastening connection in the groove. According to the power generation device, the immersion type floater is adopted, so that visual pollution is reduced, and the device is protected from being mechanically damaged in extreme casesat sea; and the direct-drive motor is adopted for power generation, so that the size of the wave power generation device is reduced, the power generation process is simplified, the operation maintenance and power generation cost is reduced, and the commercial competitiveness is improved.

Description

technical field [0001] The invention relates to a power generation device, in particular to a direct-drive wave power generation device and a power generation method based on a submerged float. Background technique [0002] Two-thirds of the earth's surface is covered by oceans, which contain very rich ocean energy. Wave energy refers to the sum of kinetic energy and potential energy of ocean surface waves, and is the wave generated by the ocean under the action of wind and gravity The energy of movement. The energy of a wave is proportional to the square of the wave height, the period of the wave motion, and the width of the oncoming wave. It is estimated that there is about 3TW of wave energy in the entire ocean, of which the total wave energy in East Asia has reached 173GW. Excluding areas with wave energy less than or equal to 5KW / m and areas covered by ice that cannot be developed, the wave energy reserves also have 157GW. If fully harnessed, wave energy could make a ...

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Problems solved by technology

However, since the observation sites of many marine stations are located in inner bays or where the wind volume is small, the actual coastal wave power is far more than this

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