Apparatus for energy transfer using converter and method of manufacturing same
First Claim
1. A motor drive circuit comprising:
- 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, wherein the bi-directional DC-to-DC voltage converter comprises a first bi-directional buck/boost converter;
a voltage inverter coupled to the bi-directional DC-to-DC voltage converter;
a second energy storage device configured to supply electrical energy to the voltage inverter;
a second bi-directional buck/boost converter coupled to the first bi-directional buck/boost converter, wherein the first and second bi-directional buck/boost converters are configured to modulate a voltage for charging the second energy storage device;
an input device configured to receive electrical energy from an external energy source; and
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 having a first configuration configured to transfer electrical energy to the first energy storage device via the bi-directional DC-to-DC voltage converter, and having 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.
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Accused Products
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.
58 Citations
22 Claims
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1. A motor drive circuit comprising:
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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, wherein the bi-directional DC-to-DC voltage converter comprises a first bi-directional buck/boost converter; a voltage inverter coupled to the bi-directional DC-to-DC voltage converter; a second energy storage device configured to supply electrical energy to the voltage inverter; a second bi-directional buck/boost converter coupled to the first bi-directional buck/boost converter, wherein the first and second bi-directional buck/boost converters are configured to modulate a voltage for charging the second energy storage device; an input device configured to receive electrical energy from an external energy source; and 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 having a first configuration configured to transfer electrical energy to the first energy storage device via the bi-directional DC-to-DC voltage converter, and having 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of manufacturing comprising:
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providing a first energy storage device; coupling a first bi-directional buck/boost converter to the first energy storage device; coupling a plurality of bi-directional buck/boost converters to the first bi-directional buck/boost converter; coupling an input device to the first bi-directional buck/boost converter, the input device configured to receive electrical energy from an external energy source; coupling one or more coupling devices to the first bi-directional buck/boost converter, to the first energy storage device, and to the input device, wherein the one or more coupling devices is configured to cause electrical energy to charge the first energy storage device via the first bi-directional buck/boost converter and configured to cause electrical energy from the first energy storage device to transfer to the voltage inverter via the first bi-directional buck/boost converter; and configuring the first bi-directional buck/boost converter and one of the plurality of bi-directional buck/boost converters to modulate a voltage from the external energy source to the first energy storage device such that an energy transfer power factor is maximized. - View Dependent Claims (10, 11, 12, 13, 14)
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15. 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 first bi-directional buck/boost converter coupled to the first battery, the first bi-directional buck/boost converter having a first inductor and a first transistor; a second bi-directional buck/boost converter having a second inductor and a second transistor, wherein the second bi-directional buck/boost converter is coupled to the first bi-directional buck/boost converter and configured to boost a voltage output from the first battery and supply the boosted voltage to the voltage inverter; an input device configured to receive electrical energy from an external energy source; and a coupling system having a first configuration configured to couple the first battery to the input device via the first bi-directional buck/boost converter, and having a second configuration configured to couple the first battery to the voltage inverter via the first bi-directional buck/boost converter. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification