SYSTEM, VEHICLE AND RELATED METHOD
First Claim
1. A system, comprising:
- a first energy storage system electrically coupled to the DC-link, and the first energy storage system comprises a first energy source that can exchange electrical power with an electric motor through the DC-link;
a boost converter coupled to the DC-link;
a second energy storage system that can be reversibly electrically coupled to the boost converter through a contactor, and wherein an operating voltage of the second energy storage system is less than an operating voltage of the first energy source; and
the second energy storage system comprises both an energy battery and a second energy source, and the second energy source has an operating voltage that is higher than the energy battery and is lower than the first energy source operating voltage.
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Accused Products
Abstract
A system includes a first energy storage system electrically coupled to the DC-link, and the first energy storage system comprises a first energy source that can exchange electrical power with an electric motor through the DC-link; a boost converter coupled to the DC-link; a second energy storage system that can be reversibly electrically coupled to the boost converter through a contactor, and wherein an operating voltage of the second energy storage system is less than an operating voltage of the first energy source; and the second energy storage system comprises both an energy battery and a second energy source, and the second energy source has an operating voltage that is higher than the energy battery and is lower than the first energy source operating voltage. A vehicle incorporating the system and a related method are provided.
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Citations
28 Claims
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1. A system, comprising:
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a first energy storage system electrically coupled to the DC-link, and the first energy storage system comprises a first energy source that can exchange electrical power with an electric motor through the DC-link; a boost converter coupled to the DC-link; a second energy storage system that can be reversibly electrically coupled to the boost converter through a contactor, and wherein an operating voltage of the second energy storage system is less than an operating voltage of the first energy source; and the second energy storage system comprises both an energy battery and a second energy source, and the second energy source has an operating voltage that is higher than the energy battery and is lower than the first energy source operating voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A vehicle propulsion system, comprising:
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an alternating current (AC) electric motor; a first energy storage system electrically coupled to the electric motor through a direct current (DC) link and that comprises a first energy source; a second energy storage system electrically coupled to the electric motor such that the voltage output from the second energy storage system is decoupled from the DC link using a boost converter, and the second energy storage system includes a second energy source and an energy battery; and a contactor that is poled to conduct current from a low voltage side of the boost converter to a high voltage side of the boost converter, and the contactor is controlled to operate based on a external factor communicated to the controller. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method, comprising:
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exchanging electrical power from a first energy source of a first energy storage system with an electric motor through a DC-link and further to a boost converter; and reversibly electrically coupling a second energy storage system to the boost converter through a contactor in response to an operating voltage measurement of the second energy storage system being less than an operating voltage of the first energy source, wherein the second energy storage system comprises both an energy battery and a second energy source, and the second energy source has an operating voltage that is higher than the energy battery but is lower than the first energy source operating voltage.
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Specification