Indirect excitation multi-oscillator piezoelectric aerogenerator

Abstract

The invention relates to an indirect excitation multi-oscillator piezoelectric aerogenerator, and belongs to the fluid generating field; a hosing side wall is provided with a through-flow hole; one end of the housing is provided with a vertical plate with a through-flow hole and a boss; the boss is provided with piezoelectric oscillator groups and elastic reeds; each piezoelectric oscillator group at least comprises two piezoelectric oscillators with a suspended magnet in the end portion; the elastic reed is provided with a suspending magnet, and same-polarity magnet poles of the suspended and suspending magnets are arranged in opposite; the non-fixed end of the elastic reed is provided with a mass block and a flow-disturbing body; the flow-disturbing body is embedded with two movable magnets; the upper and lower side walls of the housing are provided with two fixed magnets; the same-polarity magnet poles of the movable magnets and fixed magnets are arranged in opposite; the piezoelectric oscillator is a flattened structure before installation, and a bended structure after installation. The advantages are that self excitation vibration generation is realized, the fluid speed and direction are strong in adaptability, and the structure is simple; the piezoelectric patches only bear crushing stress, and are high in reliability; multi-oscillator synchronization work is realized, thus providing strong power generating capability.

Description

technical field [0001] The invention belongs to the technical field of new energy and power generation, and in particular relates to an indirectly excited multi-vibrator piezoelectric wind generator, which provides energy supply for wireless sensor nodes. Background technique [0002] Wind energy widely exists in nature, and wind power generation has become one of the mainstream energy sources in the world today. In the past, people only focused on the research of large-scale wind power generation systems. In recent years, with the maturity of wireless sensor network technology and its popularization in monitoring fields such as the environment, buildings, bridges, military and public safety, it is possible to provide continuous energy supply for it. The research on the micro-miniature wind turbines has been widely concerned by scholars at home and abroad. The reason is that the energy of the chemical battery is limited, and its service time is far shorter than the life of t...

AI Technical Summary

Problems solved by technology

Most of the existing piezoelectric wind generators are rotary, that is, the wind is used to rotate the blades first, and then the blades drive the rotating shaft to excite the piezoelectric vibrator to generate electricity. In addition to the complex structure and the need for mechanical parts to switch motions, this type of generator has a high wind speed. When it is low, it is difficult to drive the blades to rotate to generate electricity, and the piezoelectric sheet is subjected to alternating tensile and compressive stress during operation, and the piezoelectric vibrator is easily damaged due to excessive tensile stress

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