Multi-mode and multi-axis vibration power generation effective for vehicles

This paper presents an effective method of power generation from the multi-mode and multi-axis vibration of a vehicle. First, road tests considering the mass and velocity variation are conducted and analyzed. Next, in order to select an optimal lead zirconate titanate (PZT) device for the power generation, no-load and load tests are performed. Based on the characteristic results of the vehicle´s vibration, a multi-mode and multi-axis power generator is proposed. Then, a prototype generator using the selected PZT device is developed. Finally, vibration experiments on both the vertical and horizontal axes are performed, and the effectiveness of the proposed multi-mode and multi-axis vibration power generator is verified through system identification results.