Conductive Holding, LLC

Xuntuo Wang

Hua Bai

Alexander Balogh

In one embodiment, a bidirectional DC/DC converter includes a DC/AC inverter having active switches (e.g., MOSFETs), and an AC/DC rectifier having a capacitor that performs DC-bias current blocking and active switches (e.g., MOSFETs) arranged in a bridge configuration. A microcontroller is coupled to the active switches of the DC/AC inverter and AC/DC rectifier and configured to provide control signals thereto according to a control algorithm that, when power is to flow in a forward direction, sends control signals to operate the active switches of the DC/AC inverter at a duty cycle and to disable the active switches of the AC/DC rectifier, and when power is to flow in a reverse direction, sends control signals to operate the active switches of the DC/AC inverter to disable the active switches of the DC/AC inverter and operates the active switches of the AC/DC rectifier at a duty cycle.

Bidirectional DC/DC converter for a charging system

In one embodiment, a bidirectional battery charger integrated with renewable energy generation includes a primary side AC/DC rectifier coupled to the electrical grid and a first DC bus, a DC/AC inverter coupled to the first DC bus and a primary winding, a secondary side AC/DC rectifier coupled to a secondary winding and a battery, and a boost converter coupled to a renewable energy generator and the first DC bus. The boost converter includes an active switch controlled by a control algorithm that, when renewable power is available, operates the active switch at a duty cycle that allows power to flow from the renewable energy generator to the first DC bus and on to charge the battery (without passing though the primary side AC/DC rectifier) or on to supply the electrical grid (without passing through the DC/AC inverter and secondary side AC/DC rectifier), and, when not available, disables the active switch.

Growing community of inventors

Cambridge, MA, United States of America

Xuntuo Wang