A Bipolar-Input Thermoelectric Energy-Harvesting Interface With BoostFlyback Hyb

Abstract

This paper presents a bipolar-input thermoelectric energy-harvesting interface based on boost/flyback hybrid con- verter (BFHC). Two-type ring oscillators are combined to form as a complementary group with bipolar-input voltage operating range for self-start. With the technique of combining the boost converter and flyback converter together, the system is able to convert the energy with bipolar-input voltages. The open- circuit voltage maximum power point tracking (MPPT) method is adopted in this