Propelling system and energy management system and methods
First Claim
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1. An energy management system, comprising:
- a first power converter coupled to a traction drive device and an energy-type energy source, the first power converter comprising a first leg circuit;
a second power converter coupled to the traction drive device and a power-type energy source, the second power converter comprising a plurality of second leg circuits; and
a control device configured to control the first power converter and the second power converter when the traction drive device is in a motoring mode by;
enabling the first leg circuit and disabling all of the second leg circuits such that the energy-type energy source provides power to the traction drive device when a positive required power of the traction drive device is less than or equal to a positive threshold power; and
enabling the first leg circuit and enabling at least one of the second leg circuits such that both the energy-type energy source and power-type energy source provide power to the traction drive device when the positive required power is greater than the positive threshold power.
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Abstract
An energy management system comprises a first electricity transformer with one or more first leg circuit(s), a second electricity transformer with one or more second leg circuit(s), and a control device. One or more first leg circuit(s) is (are) coupled to an energy-type supply, and one or more second leg circuit(s) is (are) coupled to a power-type supply. The control device will control the first and second electricity transformers operating under at least one of two conditions when a traction device is under driving mode.
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Citations
19 Claims
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1. An energy management system, comprising:
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a first power converter coupled to a traction drive device and an energy-type energy source, the first power converter comprising a first leg circuit; a second power converter coupled to the traction drive device and a power-type energy source, the second power converter comprising a plurality of second leg circuits; and a control device configured to control the first power converter and the second power converter when the traction drive device is in a motoring mode by; enabling the first leg circuit and disabling all of the second leg circuits such that the energy-type energy source provides power to the traction drive device when a positive required power of the traction drive device is less than or equal to a positive threshold power; and enabling the first leg circuit and enabling at least one of the second leg circuits such that both the energy-type energy source and power-type energy source provide power to the traction drive device when the positive required power is greater than the positive threshold power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An energy management method, comprising:
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coupling a first power converter and a second power converter to a traction drive device, the first power converter comprising a first leg circuit and the second power converter comprising a plurality of second leg circuits; coupling the first leg circuit to an energy-type energy source; coupling the plurality of second leg circuits to a power-type energy source; controlling the first power converter and the second power converter when the traction drive device is in a motoring mode by; enabling the first leg circuit and disabling all of the second leg circuits such that the energy-type energy source provides power to the traction drive device when a positive required power of the traction drive device is less than or equal to a positive threshold power; and enabling the first leg circuit and enabling at least one of the second leg circuits such that both the energy-type energy source and power-type energy source provide power to the traction drive device when the positive required power is greater than the positive threshold power. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An energy management system, comprising:
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an energy-type energy source; a power-type energy source; a power converter coupled to a traction drive device, the power converter comprising a first leg circuit coupled to the energy-type energy source and two second leg circuits coupled to the power-type energy source; and a control device configured to control the power converter when the traction drive device is in a motoring mode by; enabling the first leg circuit and disabling both of the second leg circuits when the positive required power is less than or equal to the first positive threshold power; enabling the first leg circuit and one of the second leg circuits when the positive required power is greater than the first positive threshold power and less than or equal to the second positive threshold power; and enabling the first leg circuit and both of the second leg circuits when the positive required power is greater than the second positive threshold power. - View Dependent Claims (19)
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Specification