An energy harvesting device suitable for ultra-low frequency rotary motion

Abstract

The invention discloses an energy collection device. The energy collection device comprises vibration energy collection, a bridge rectifier, a buck-boost inverter circuit and a voltage stabilizing circuit, wherein the vibration energy collection changes the rotary motion into a linear reciprocating vibration motion and converts the vibration mechanical energy into electric energy; the bridge rectifier is used for converting alternating current into direct current; the Buck-boost inverter is used for realizing direct current boost; and the voltage stabilizing circuit is used for removing ripples in the direct-current voltage. According to the device described in the invention, the purpose of collecting weak rotary energy can be effectively achieved, the collected rotary frequency is smallerthan 3Hz, and electric energy of 700mw is generated.

Description

technical field [0001] The present invention relates to a lightweight energy harvesting device capable of harvesting energy for ultra-low frequency (<3 Hz) rotational operation. The device can collect low-speed rotational motion energy based on macro-fiber composite materials, and then convert AC power into DC power through a full-bridge rectifier module, and then remove ripples through a voltage stabilizing circuit to obtain a relatively stable DC power supply, which can meet various requirements. Sensor power requirements. Background technique [0002] Due to problems such as energy shortage, increasing supply pressure, and prominent environmental protection contradictions, the effective and reasonable utilization of wind energy, solar energy and other renewable energy has become the focus of world attention. Wind power is a renewable energy with great potential in the future, so the installed capacity of wind power is increasing exponentially around the world. The cu...

AI Technical Summary

Problems solved by technology

The current problem is that remote health management of these large structures is an important guarantee for the safe operation of wind turbines

In summary, it is difficult to develop rotating energy harvesting devices that generate relatively high energy at low operating frequencies while maintaining a compact size as much as possible

[0004] The existing piezoelectric energy harvesting devices almost all work at frequencies above 3 Hz, which cannot meet the working requirements of ultra-low frequencies.

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