An adaptive piezoelectric energy harvesting interface circuit with a novel peak detector

Chamanian S., Zorlu O., KÜLAH H., Muhtaroglu A.

5th International Conference on Energy Aware Computing Systems & Applications (ICEAC), Cairo, Mısır, 24 - 26 Mart 2015 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Cairo
  • Basıldığı Ülke: Mısır
  • Anahtar Kelimeler: Interface circuit, piezoelectric energy harvester, self-powered circuit, power efficiency, CONVERTER, DEVICE
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

This paper presents a fully self-powered interface circuit with a novel peak detector for piezoelectric energy harvesters (PEH). This circuit can be utilized to scavenge energy from low power environmental vibrations in 10s of mu W range. Synchronous switching technique is used to extract maximum available power where switching instants are detected independently from excitation changes of the PEH. The proposed peak detector senses voltages higher than power supply for a wide frequency range of input vibration. The simulations with an output voltage range of 1 to 3.3 V show power conversion efficiency between 79% and 88% for an input power of 13.2 mu W.