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Apparatus for energy transfer using converter and method of manufacturing same

  • US 8,080,973 B2
  • Filed: 10/22/2008
  • Issued: 12/20/2011
  • Est. Priority Date: 10/22/2008
  • Status: Active Grant
First Claim
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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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