fig4

Figure 4. (A) Voltage output and swept voltage output response of PEH at 3.5 m/s wind speed, the illustration shows the amplified output of the sweep voltage within the 55-60 s range (Frequency:10-70 Hz), (B) Fitting of the relationship between wind speed and vibration frequency of PEH, (C) Voltage response of PEH at different wind speeds, (D) Current response of EMH at constant wind speed, (E) Output power and output voltage response of EMH at different load resistances at 12 m/s wind speed, (F) Output power of EMH at different wind speeds, (G) Comparison chart of PEEH output power with other literature reports.