Design and Experimental Study of Wind-Driven Piezoelectric-Electromagnetic Complementary Power Generation Structure
SUN Jiacun
QIAO Rui
Abstract：Piezoelectric materials have the characteristics of high voltage generation,high energy transfer efficiency,and low current generation.DC electromagnetic generators produce low voltage and relatively high current.This study utilizes the flow of gas to drive the rotation of the blades of a vertical-axis DC generator for electromagnetic power generation.Multiple permanent magnets are attached to the bottom of the blade,and the piezoelectric oscillator adopts a fixed-free end configuration(with one end fixed and the other end free).The free end is attached with a permanent magnet,and when the blade rotates,the permanent magnet generates attraction,driving the piezoelectric plate to vibrate,and the piezoelectric oscillator generates electrical energy.A wind-driven electromagnetic and piezoelectric complementary power generation structure was designed,and an experimental setup was built.An energy harvesting and voltage stabilization circuit was designed,and experiments on energy harvesting and voltage stabilization were conducted.The experimental results show that the designed experimental device achieves high energy harvesting efficiency and solves the problem that piezoelectric oscillators are difficult to start vibrating under natural wind conditions and is not affected by wind direction.The generated energy is basically the sum of the energy from electromagnetic power generation and piezoelectric power generation,which effectively improves the power output of the piezoelectric generator.It can be used as a power source for some wireless sensor circuits.
Keywords：piezoelectric power generationelectromagnetic power generationvertical axismagnetic drive
Publication Date：2025-09-30
Online Publishing Date：2025-10-16(First online date of this platform, not the publication date of the document)
Pages：5( 44-48 )