Battery integrated isolated power converter and systems for electric vehicle propulsion
First Claim
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1. A battery integrated isolated power converter (BIIC) comprising:
- at least one BIIC module (BIICM) string comprising a plurality of BIICMs coupled to each other, each BIICM of the plurality of BIICMs comprising;
a first BIICM circuit comprising first, second, third, and fourth switching devices coupled together, the first switching device coupled to the second switching device, the third switching device coupled to the fourth switching device, both of the first switching device and the second switching device coupled in parallel across both of the third switching device and the fourth switching device;
a second BIICM circuit comprising a fifth switching device and a sixth switching device coupled to the fifth switching device;
a BIICM high-frequency transformer coupled to and between the first BIICM circuit and the second BIICM circuit, the BIICM high-frequency transformer including a first winding and a second winding, the first winding coupled in parallel across at least one of the third switching device or the fourth switching device, the second winding coupled in parallel across at least one of the fifth switching device or the sixth switching device, wherein the first BIICM circuit and the second BIICM circuit are physically isolated and inductively coupled through the BIICM high-frequency transformer;
one or more of;
(a) at least one energy storage device or (b) at least one capacitor coupled in parallel across at least one of;
both of the first switching device and the second switching device;
orboth of the fifth switching device and the sixth switching device.
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Abstract
An electric propulsion system includes at least one generator. The electric propulsion system also includes at least one drive engine coupled to the at least one generator. The electric propulsion system further includes at least one electrical device. The electric propulsion system also includes at least one battery integrated isolated power converter (BIIC), where the at least one generator and at least one of the at least one BIIC and the at least one electrical device are coupled, and where the at least one BIIC and the at least one electrical device are coupled.
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Citations
13 Claims
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1. A battery integrated isolated power converter (BIIC) comprising:
at least one BIIC module (BIICM) string comprising a plurality of BIICMs coupled to each other, each BIICM of the plurality of BIICMs comprising; a first BIICM circuit comprising first, second, third, and fourth switching devices coupled together, the first switching device coupled to the second switching device, the third switching device coupled to the fourth switching device, both of the first switching device and the second switching device coupled in parallel across both of the third switching device and the fourth switching device; a second BIICM circuit comprising a fifth switching device and a sixth switching device coupled to the fifth switching device; a BIICM high-frequency transformer coupled to and between the first BIICM circuit and the second BIICM circuit, the BIICM high-frequency transformer including a first winding and a second winding, the first winding coupled in parallel across at least one of the third switching device or the fourth switching device, the second winding coupled in parallel across at least one of the fifth switching device or the sixth switching device, wherein the first BIICM circuit and the second BIICM circuit are physically isolated and inductively coupled through the BIICM high-frequency transformer; one or more of;
(a) at least one energy storage device or (b) at least one capacitor coupled in parallel across at least one of;both of the first switching device and the second switching device;
orboth of the fifth switching device and the sixth switching device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
Specification