System for multiple energy storage and management and method of making same
First Claim
1. A propulsion system comprising:
- an electric drive;
a direct current (DC) link electrically coupled to the electric drive;
a first energy storage system electrically coupled to the electric drive, the first energy storage system comprising at least a high specific-power energy storage device;
a second energy storage system, wherein a first terminal of the second energy storage system is electrically coupled to the electric drive through the DC link and a second terminal of the second energy storage system is coupled in series with a terminal of the high specific-power energy storage device; and
a multi-channel bi-directional boost converter coupled to the first energy storage system and to the second energy storage system, wherein the series connection between the terminal of the high specific-power energy storage device and the second terminal of the second energy storage system bypasses the multi-channel bi-directional boost converter.
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Accused Products
Abstract
A propulsion system comprising an electric drive, a DC link electrically coupled to the electric drive, and a first energy storage system electrically coupled to the electric drive, the first energy storage system comprising at least a high specific-power energy storage device is shown. The propulsion system further includes a second energy storage system, wherein a first terminal of the second energy storage system is electrically coupled to the electric drive through the DC link and a second terminal of the second energy storage system is coupled in series with a terminal of the high specific-power energy storage device. A multi-channel bi-directional boost converter is coupled to the first energy storage system and to the second energy storage system, wherein the connection between the terminal of the high specific-power energy storage device and the second terminal of the second energy storage system bypasses the multi-channel bi-directional boost converter.
21 Citations
24 Claims
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1. A propulsion system comprising:
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an electric drive; a direct current (DC) link electrically coupled to the electric drive; a first energy storage system electrically coupled to the electric drive, the first energy storage system comprising at least a high specific-power energy storage device; a second energy storage system, wherein a first terminal of the second energy storage system is electrically coupled to the electric drive through the DC link and a second terminal of the second energy storage system is coupled in series with a terminal of the high specific-power energy storage device; and a multi-channel bi-directional boost converter coupled to the first energy storage system and to the second energy storage system, wherein the series connection between the terminal of the high specific-power energy storage device and the second terminal of the second energy storage system bypasses the multi-channel bi-directional boost converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of assembling a control system comprising:
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coupling an ultracapacitor with an energy battery to form a first energy storage system; coupling a second energy storage system to an electric drive through a direct current (DC) link; coupling a multi-channel bi-directional boost converter to each of the first energy storage system and second energy storage system; and connecting a terminal of the ultracapacitor in series with a terminal of the second energy storage system such that the connection between the terminal of the ultracapacitor and the terminal of the second energy storage system bypasses the multi-channel bi-directional boost converter. - View Dependent Claims (17, 18, 19)
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20. An energy storage arrangement for an electrically powered system, the arrangement comprising:
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a first energy storage system comprising at least an ultracapacitor; a multi-channel bi-directional boost converter coupled to the first energy storage system on a low-voltage side of the multi-channel bi-directional boost converter; and a second energy storage system coupled to the multi-channel bi-directional boost converter on a high-voltage side of multi-channel bi-directional boost converter, wherein the second energy storage system is further coupled in series with the ultracapacitor such that the series connection between the second energy storage system and the ultracapacitor bypasses the multi-channel bi-directional boost converter. - View Dependent Claims (21, 22, 23, 24)
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Specification