Patent ID: 9692315
Date: 2017-06-27
CPC Classifications: H02J,H02M

Claim:
1. An AC-AC converter device, comprising: a first and a second AC input terminals; a first and a second AC output terminals; an input device connected between an input node, a common node, a positive DC terminal and a negative DC terminal, wherein the input node is connected to the first AC input terminal via a first input inductor; an output device connected between an output node, the positive DC terminal and the negative DC terminal, wherein the output node is connected to the first AC output terminal via an output inductor; a common device connected between the common node, the positive DC terminal and the negative DC terminal, wherein the common node is connected to the second AC input terminal via a common inductor; a control device for controlling a plurality of switches of the output device and the common device; and a DC device is connected between the positive DC terminal and the negative DC terminal, wherein the output device comprises a first and a second output switch, wherein the first output switch is connected between the output node and the positive DC terminal and the second output switch is connected between the negative DC terminal and the output node; wherein the common device comprises a first and a second common switch, wherein the first common switch is connected between the common node and the positive DC terminal, and the second common switch is connected between the negative DC terminal and the common node; wherein the second AC input terminal is connected to the second AC output terminal, wherein the input device comprises a first and a second diode and a bi-directional switch connected between the input node and the common node, wherein the control device is also controlling the bi-directional switch, and wherein the first diode is connected with its anode to the input node and its cathode to the positive DC terminal, the second diode is connected with its anode to the negative DC terminal and its cathode to the input node.