Energy harvest system and the method thereof

摘要

The present disclosure discloses an energy harvest system converting an AC source provided by an energy harvester to a desired voltage. The AC source is boosted to the desired voltage by a bi-directional booster converter comprising fourth controllable transistors configured in an H-bridge, and stored by a storage capacitor. The desired voltage is then used to power various loads.

主权项

1. An energy harvest system, comprising:
an energy harvester configured to provide an AC source, the energy harvest having a first terminal and a second terminal; a storage port configured to provide a storage voltage; a first transistor coupled between the first terminal of the energy harvester and the storage port; a second transistor coupled between the first terminal of the energy harvester and a reference ground; a third transistor coupled between the second terminal of the energy harvester and the storage port; a fourth transistor coupled between the second terminal of the energy harvester and the reference ground; and a storage capacitor coupled between the storage port and the reference ground; wherein the first transistor and the second transistor operate at relatively low switching frequency, while the third transistor and the fourth transistor operate at relatively high switching frequency.