Improving the Scavenged Power of Nonlinear Piezoelectric Energy Harvesting Interface at Off-Resonance by Introducing Switching Delay

@article{Hsieh2015ImprovingTS,
  title={Improving the Scavenged Power of Nonlinear Piezoelectric Energy Harvesting Interface at Off-Resonance by Introducing Switching Delay},
  author={Ping-Hsuan Hsieh and Chi-Huan Chen and Hung-Chen Chen},
  journal={IEEE Transactions on Power Electronics},
  year={2015},
  volume={30},
  pages={3142-3155}
}
This paper presents two interface circuit designs that improve the piezoelectric energy harvesting performance at offresonance. Complex impedance matching at different frequencies is achieved by introducing delay into the conventional switching methods. The proposed techniques can also be used in other applications, such as electromagnetic energy harvesting. The system is analyzed using equivalent impedance at fundamental of operating frequency. Design considerations such as two possible modes… CONTINUE READING