Interleaved power conversion systems and methods
AssigneeSchneider Electric It Corporation
InventorNoureldeen Mohamed Elsayad
Life of this patent
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Abstract
A bi-directional AC/DC converter is provided including a DC-power connection configured to be coupled to a DC-power source, an AC-power connection configured to be coupled to at least one of an AC-power source or a load, a multiplexer having a plurality of multiplexer switches, at least one interleaved bridge circuit having a plurality of bridge switches coupled to the multiplexer, and a positive DC node and a negative DC node coupled to the plurality of multiplexer switches, wherein the plurality of bridge switches includes at least two bridge switches coupled between the AC-power connection and at least one of the positive DC node or the negative DC node.
Claims20
A bi-directional AC/DC converter comprising:
- a DC-power connection configured to be coupled to a DC-power source;
- an AC-power connection configured to be coupled to at least one of an AC-power source or a load;
- a multiplexer having a plurality of multiplexer switches;
- at least one interleaved bridge circuit having a plurality of interleaved bridge switches coupled to the multiplexer and being interleaved with one another, the at least one interleaved bridge circuit including a first DC-node connection, a second DC-node connection, and an AC-node connection coupled to a midpoint of the plurality of interleaved bridge switches;
- an unfolder circuit including a plurality of unfolder switches coupled to the AC-power connection and to the DC-power connection;
- at least one controller configured to control, during a back-up mode of operation, the plurality of unfolder switches to couple the AC-power connection to the DC-power connection and to provide power received from the DC-power source to the AC-power connection;
- and
- a positive DC node and a negative DC node coupled to the plurality of multiplexer switches,
- wherein the plurality of interleaved bridge switches includes at least two bridge switches coupled between the AC-power connection and at least one of the positive DC node or the negative DC node, and
- wherein the first DC-node connection is coupled to the positive DC node, the second DC-node connection is coupled to the negative DC node, and the AC-node connection is coupled to the AC-power connection.
A non-transitory computer-readable medium storing thereon sequences of computer-executable instructions for controlling a bi-directional AC/DC converter comprising an AC-power connection configured to be coupled to at least one of an AC-power source or a load, a DC-power connection configured to be coupled to a DC-power source, a multiplexer having a plurality of multiplexer switches, at least one interleaved bridge circuit having a first DC-node connection, a second DC-node connection, and a plurality of interleaved bridge switches having a midpoint coupled to the AC-power connection and being coupled to the multiplexer, the interleaved bridge switches being interleaved with one another, an unfolder circuit including a plurality of unfolder switches coupled to the AC-power connection and to the DC-power connection, and a positive DC node and a negative DC node coupled to the plurality of multiplexer switches, the sequences of computer-executable instructions including instructions that instruct at least one processor to:
- operate the plurality of multiplexer switches to couple the first DC-node connection to the DC-power source via the positive DC node;
- operate the plurality of multiplexer switches to couple the second DC-node connection to the DC-power source via the negative DC node;
- operate a first interleaved bridge switch of the plurality of interleaved bridge switches to couple the AC-power connection to one of the positive DC node or the negative DC node via the midpoint;
- operate a second interleaved bridge switch of the plurality of interleaved bridge switches to couple the AC-power connection to the one of the positive DC node or the negative DC node via the midpoint;
- and
- operate, during a back-up mode of operation, the plurality of unfolder switches to couple the AC-power connection to the DC-power connection and to provide power received from the DC-power source to the AC-power connection.
A bi-directional AC/DC converter comprising:
- a DC-power connection configured to be coupled to a DC-power source;
- an AC-power connection configured to be coupled to at least one of an AC-power source or a load;
- a multiplexer having a plurality of multiplexer switches;
- at least one interleaved bridge circuit having a plurality of interleaved bridge switches being interleaved with one another, the at least one interleaved bridge circuit including a first DC-node connection coupled to the DC-power source via a positive DC node, a second DC-node connection coupled to the DC-power source via a negative DC node, and an AC-node connection coupled to a midpoint of the plurality of interleaved bridge switches and coupled to the AC-power connection;
- an unfolder circuit coupled to the AC-power connection and to the DC-power connection and having a plurality of unfolder switches;
- and
- at least one controller configured to control, during a back-up mode of operation, the plurality of unfolder switches to couple the AC-power connection to the DC-power connection and to provide power received from the DC-power source to the AC-power connection.
Dependencies are inferred from the claim text.