Modeling and Experiment of a V-Shaped Piezoelectric Energy Harvester

Figure 14

The output voltage and output power versus load resistance curves under z-axis excitation: (a) =45°, the first natural frequency excitation; (b) =45°, the second natural frequency excitation; (c) =90°, the first natural frequency excitation; (d) =90°, the second natural frequency excitation; (e) =135°, the first natural frequency excitation; (f) =135°, the second natural frequency excitation.

(a)

(b)

(c)

(d)

(e)

(f)