US 2026/0269743 A1 · FIVE-LEVEL OPERATION OF THREE-PHASE MATRIX DUAL ACTIVE BRIDGE

Abstract

A power converter includes an H-bridge coupled between a secondary side of the transformer and a battery, and a three-phase matrix bridge coupled between an AC voltage input and a primary side of the transformer. The three-phase matrix bridge includes first, second, and third phases coupled respectively between the transformer and an AC voltage input. The power converter further includes a control circuit that controls switching of the three-phase matrix bridge and the H-bridge. In response to a three-phase AC voltage at the AC voltage input, the control circuit applies a time-multiplexed switching pattern to switch the three-phase matrix bridge. In response to a single-phase AC voltage across a first-phase input and a second-phase input of the AC voltage input, the control circuit applies a single-phase switching pattern that operates the third phase as a T-type switch in conjunction with switching of the first phase and the second phase.

Claims20

Dependent claims

A power converter comprising:

a transformer;
an H-bridge coupled between a secondary side of the transformer and a battery;
a three-phase matrix bridge coupled between an AC voltage input and a primary side of the transformer, the three-phase matrix bridge including a first phase, a second phase, and a third phase coupled respectively between the primary side of the transformer and a corresponding one of a first-phase input, a second-phase input, and a third-phase input of the AC voltage input;
and
a control circuit coupled to control switching of the three-phase matrix bridge and the H-bridge, the control circuit configured to:
in response to a three-phase AC voltage at the first-phase input, the second-phase input, and the third-phase input of the AC voltage input, apply a time-multiplexed switching pattern to switch the three-phase matrix bridge;
and
in response to a single-phase AC voltage across the first-phase input and the second-phase input of the AC voltage input, apply a single-phase switching pattern that operates the third phase as a T-type switch in conjunction with switching of the first phase and the second phase of the three-phase matrix bridge.

5 more elements

A three-phase matrix dual active bridge power converter comprising:

a transformer;
an H-bridge coupled between a secondary side of the transformer and a battery;
a three-phase matrix bridge including:
a first phase configured as a first bidirectional half-bridge between a first-phase input of an AC voltage input and a primary side of the transformer;
a second phase configured as a second bidirectional half-bridge between a second-phase input of the AC voltage input and the primary side of the transformer;
and
a third phase configured as a third bidirectional half-bridge between a third-phase input of the AC voltage input and the primary side of the transformer;
and
a control circuit coupled to control switching of the three-phase matrix bridge and the H-bridge, the control circuit configured to:
detect whether a three-phase AC voltage is present at the AC voltage input or a single-phase AC voltage is present across the first-phase input and the second-phase input of the AC voltage input;
in response to the three-phase AC voltage at the first-phase input, the second-phase input, and the third-phase input of the AC voltage input, apply a time-multiplexed switching pattern to switch the three-phase matrix bridge;
and
in response to the single-phase AC voltage across the first-phase input and the second-phase input of the AC voltage input, apply a single-phase switching pattern that operates the third phase as a T-type switch in conjunction with switching of the first phase and the second phase of the three-phase matrix bridge.

10 more elements

A method of operating a three-phase matrix dual active bridge power converter, comprising:

receiving an AC voltage at an AC voltage input that has a first-phase input, a second-phase input, and a third-phase input respectively coupled to a first phase, a second phase, and a third phase of a three-phase matrix bridge;
selecting a time-multiplexed switching pattern if the AC voltage is a three-phase AC voltage;
selecting a single-phase switching pattern if the AC voltage is a single-phase AC voltage, wherein the single-phase switching pattern is configured to operate the third phase as a T-type switch in conjunction with switching of the first phase and the second phase;
switching the three-phase matrix bridge according to a selected one of the time-multiplexed switching pattern and the single-phase switching pattern;
and
switching an H-bridge that is coupled between a secondary side of a transformer and a battery.

3 more elements

Dependencies are inferred from the claim text.

Five-level operation of three-phase matrix dual active bridge

Life of this patent

Five-level operation of three-phase matrix dual active bridge

Life of this patent

Abstract

Claims20