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Z-ARCHIVE-Energy Storage: Bidirectional Direct Current Converters
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Patent US10291139
Issued 2019-05-14
Two-transformer Three-phase Dc-dc Resonant Converter
A transformer circuit includes a first transformer, a second transformer and an inductor, where a first terminal of the first transformer is coupled to a first terminal of the second transformer. The inductor is coupled between a second terminal of the first transformer and a second terminal of the second transformer.
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- 1. A transformer circuit, comprising:
a first transformer; a second transformer, a first terminal of the first transformer being coupled to a first terminal of the second transformer; an inductor coupled between a second terminal of the first transformer and a second terminal of the second transformer; and a secondary side configured to deliver a three-phase power output using only two transformers, the two transformers comprising the first transformer and the second transformer, and the secondary side comprising:
a first output node formed by a third terminal of the first transformer;
a second output node formed by coupling a fourth terminal of the first transformer and a fourth terminal of the second transformer; and
a third output node formed by a third terminal of the second transformer.
- 7. A resonant converter circuit, comprising:
a resonant tank circuit; and a transformer circuit coupled to the resonant tank circuit, the transformer circuit comprising:
a first transformer;
a second transformer, a first terminal of the first transformer being coupled to a first terminal of the second transformer;
an inductor coupled between a second terminal of the first transformer and a second terminal of the second transformer, the resonant tank circuit being coupled to a primary side of the transformer circuit; and
a secondary side configured to deliver a three-phase power output using only two transformers, the two transformers comprising the first transformer and the second transformer, and the secondary side comprising:
a first output node formed by a third terminal of the first transformer;
a second output node formed by coupling a fourth terminal of the first transformer and a fourth terminal of the second transformer; and
a third output node formed by a third terminal of the second transformer.
- 11. A three-phase resonant direct current-direct current (DC-DC) converter system, comprising:
a primary side; a secondary side; and a transformer circuit coupled between the primary side and the secondary side, the transformer circuit comprising:
a first transformer;
a second transformer, a first terminal of the first transformer being coupled to a first terminal of the second transformer,
an inductor coupled between a second terminal of the first transformer and a second terminal of the second transformer; and
a secondary side configured to deliver a three-phase power output using only two transformers, the two transformers comprising the first transformer and the second transformer, and the secondary side comprising:
a first output node formed by a third terminal of the first transformer;
a second output node formed by coupling a fourth terminal of the first transformer and a fourth terminal of the second transformer; and
a third output node formed by a third terminal of the second transformer.
