Piezoelectric Energy Harvesting Circuit Using Full-Wave Voltage Doubling Rectifier Type Series-Synchronized Switch Harvesting on Inductor

This paper proposes full-wave voltage doubling type series-synchronized switch harvesting on inductor (S-SSHI) circuit for piezoelectric energy harvesting. A conventional circuit is composed of a full-bridge rectifier circuit and SSHI circuit to increase the output power. In the proposed circuit, a full-wave voltage doubling rectifier is chosen and the SSHI circuit is included in the rectifier circuit. Therefore, number of diodes and conduction losses of the diodes become smaller than the conventional circuit. Thereby, the maximum output power of the proposed circuit is larger than the conventional circuit, which has been confirmed in the simulation and in the experiment. In the experiment, the maximum output power with the PEH in the proposed circuit was 3.63 times larger than that in the conventional circuit.