Piezoelectric Energy Harvesting using SSHI Technique

This paper focuses on piezoelectric energy harvesting using the Synchronized Switch Harvesting on Inductor (SSHI) circuit. This method uses a nonlinear technique to remove the effect of the internal capacitor of the piezoelectric transducer and increases the output power. In this paper, we use an electronic breaker circuit to control the piezoelectric energy harvester. This circuit detects the minimum and maximum voltage and reverses the voltage on the piezoelectric transducer at displacement peaks. Our work suggests that the output power of the SSHI circuit using an electronic breaker is 22 µW.