APPARATUS FOR ENERGY TRANSFER USING CONVERTER AND METHOD OF MANUFACTURING SAME
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Abstract
According to an aspect of the invention, a motor drive circuit includes a first energy storage device configured to supply electrical energy, a bi-directional DC-to-DC voltage converter coupled to the first energy storage device, a voltage inverter coupled to the bi-directional DC-to-DC voltage converter, and an input device configured to receive electrical energy from an external energy source. The motor drive circuit further includes a coupling system coupled to the input device, to the first energy storage device, and to the bi-directional DC-to-DC voltage converter. The coupling system has a first configuration configured to transfer electrical energy to the first energy storage device via the bi-directional DC-to-DC voltage converter, and has a second configuration configured to transfer electrical energy from the first energy storage device to the voltage inverter via the bi-directional DC-to-DC voltage converter.
25 Citations
40 Claims
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1-20. -20. (canceled)
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21. A motor drive circuit comprising:
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a first energy storage device configured to supply electrical energy; a second energy storage device configured to supply electrical energy; a bi-directional DC-to-DC voltage converter coupled to the first and second energy storage devices; a voltage inverter; an input device configured to receive electrical energy from an external energy source; and a switch coupled to the input device, to the bi-directional DC-to-DC voltage converter, and to the first energy storage device, the switch having a first position configured to transfer electrical energy from the first energy storage device to the voltage inverter via the bi-directional DC-to-DC voltage converter, and having a second position configured to transfer electrical energy from the input device to the second energy storage device via the bi-directional DC-to-DC voltage converter. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of manufacturing a motor drive circuit comprising:
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coupling a first energy storage device to a bi-directional buck/boost converter; coupling the bi-directional buck/boost converter in parallel with a second energy storage device; coupling a switch to the bi-directional buck/boost converter, the switch having a first position and a second position; coupling the switch to the first energy storage device; coupling an input device to the switch, the input device configured to receive electrical energy from an external energy source; configuring the switch to cause a transfer of electrical energy from the first energy storage device to the DC-to-AC voltage inverter via the bi-directional buck/boost converter when positioned in the first position; and configuring the switch to cause a transfer of electrical energy from the input device to the second energy storage device via the bi-directional buck/boost converter to charge the second energy storage device when positioned in the second position. - View Dependent Claims (32, 33, 34)
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35. A traction system comprising:
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an electric motor configured to propel a vehicle; a voltage inverter configured to supply an AC power signal to the electric motor; and a motor drive circuit configured to supply a DC power signal to the voltage inverter, the motor drive circuit comprising; a first battery; a second battery; a bi-directional buck/boost converter coupled to the first and second batteries, the bi-directional buck/boost converter having a first inductor and a first transistor; an input device configured to receive electrical energy from an external energy source; and a multi-position switch having a first position configured to couple the first battery to the voltage inverter via the bi-directional buck/boost converter, and having a second position configured to couple the second battery to the input device via the bi-directional buck/boost converter. - View Dependent Claims (36, 37, 38, 39, 40)
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Specification