Method for detecting motion direction of linear motor mover and direct drive wave power generation system

Abstract

The invention discloses a detection method of movement direction of a linear motor rotor and a direct-driving type wave power generation system. The system comprises a wave power generation simulation module used for simulating wave power generation processes in actual sea conditions, a no-position rotor movement direction detection module used for detecting movement of a permanent magnetic linear motor rotor, an information acquisition module used for acquiring current and voltage signals at a motor side and a net side, an electric energy processing rectification module and an electric energy processing inversion grid-connection module. The electric energy processing rectification module and the electric energy processing inversion grid-connection module are used for rectification of three-phase output of the wave power generation simulation module and carrying out inversion grid-connection to a big power grid according to a grid-connection condition. According to the invention, movement directions of the permanent magnetic linear motor rotor can be effectively detected; the whole processes of output, rectification and grid connection into the big power grid of electric energy of wave power generation can be simulated; and the system and the method have higher research value and meanings for development of wave energy power generation.

Description

technical field [0001] The invention relates to a method for detecting the moving direction of a linear motor mover and a direct-drive wave power generation system, belonging to the field of new energy power generation. Background technique [0002] In recent years, with the continuous development of society and economy, the problems of energy crisis and environmental pollution have become increasingly prominent. Therefore, renewable energy has attracted more and more research scholars' attention. As a clean and renewable energy, wave energy has the characteristics of high power density, no pollution, good predictability, and abundant reserves. Through reasonable research and development, it can effectively replace traditional fossil energy and further alleviate energy crisis and environmental pollution. . In order to convert wave energy into electrical energy, domestic and foreign scholars have developed many wave power conversion devices, mainly including oscillating wate...

AI Technical Summary

Problems solved by technology

If the moving direction of the permanent magnet linear motor mover cannot be effectively judged, it will not only cause the output energy of the permanent magnet linear motor to be uncontrollable, but also cause damage to the internal structure and driving structure of the permanent magnet linear motor

Usually, judging the position of the permanent magnet linear motor requires the installation of position sensors or grating scales. The structure is complex, the cost is high, and the stability is not high.

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