AUXILIARY DRIVE APPARATUS AND METHOD OF MANUFACTURING SAME
First Claim
1. An auxiliary drive circuit comprising:
- a first energy storage device coupled to a first DC bus and configured to output electrical power to the first DC bus;
a first switch-mode power supply coupled to the first DC bus and to a second DC bus, the first switch-mode power supply configured to convert the electrical power to a first voltage and to output the first voltage to the second DC bus; and
a second switch-mode power supply coupled to the second DC bus and coupled to an auxiliary bus, the second switch-mode power supply configured to convert the first voltage to a second voltage and to provide the second voltage to the auxiliary bus, the auxiliary bus configured to provide an auxiliary voltage to an auxiliary drive system, wherein the second voltage is different from the first voltage.
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Accused Products
Abstract
An auxiliary drive circuit includes a first energy storage device coupled to a first DC bus and configured to output electrical power to the first DC bus, a first switch-mode power supply coupled to the first DC bus and to a second DC bus, the first switch-mode power supply configured to convert the electrical power to a first voltage and to output the first voltage to the second DC bus, and a second switch-mode power supply coupled to the second DC bus and coupled to an auxiliary bus, the second switch-mode power supply configured to convert the first voltage to a second voltage and to provide the second voltage to the auxiliary bus, the auxiliary bus configured to provide an auxiliary voltage to an auxiliary drive system, wherein the second voltage is different from the first voltage.
17 Citations
31 Claims
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1. An auxiliary drive circuit comprising:
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a first energy storage device coupled to a first DC bus and configured to output electrical power to the first DC bus; a first switch-mode power supply coupled to the first DC bus and to a second DC bus, the first switch-mode power supply configured to convert the electrical power to a first voltage and to output the first voltage to the second DC bus; and a second switch-mode power supply coupled to the second DC bus and coupled to an auxiliary bus, the second switch-mode power supply configured to convert the first voltage to a second voltage and to provide the second voltage to the auxiliary bus, the auxiliary bus configured to provide an auxiliary voltage to an auxiliary drive system, wherein the second voltage is different from the first voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of manufacturing comprising:
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coupling a first energy storage device to a first DC link, the first energy device configured to output electrical power to the first DC link; coupling a first switch-mode power supply to the first DC link and to a second DC link; configuring the first switch-mode power supply to convert the electrical power output by the first energy storage device to the first DC link into a first voltage, and to output the first voltage to the second DC link; coupling a second switch-mode power supply to the second DC link and to an auxiliary bus; and configuring the second switch-mode power supply to convert the first voltage to a second voltage and to supply the second voltage to the auxiliary bus; wherein the second voltage is different from the first voltage. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. An auxiliary drive system comprising:
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a first energy storage device coupled to a first DC bus, the first energy storage device configured to output electrical power to the first DC bus; a first switch-mode power supply coupled to a second DC bus and to the first DC bus, the first switch-mode power supply configured to output a first voltage to the second DC bus; and a second switch-mode power supply coupled between an auxiliary bus and the second DC bus, the second switch-mode power supply configured to convert the first voltage to a second voltage different from the first voltage, the second voltage output to the auxiliary bus. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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Specification