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.

Claims

20 · 3 independent · depth 4

20 granted claims

›1.independentA motor drive circuit comprising:na first energy storage device configured to supply electrical energy;a bi-directional DC-to-DC voltage converter cou…+9

›2.↳ 1The motor drive circuit of claim 1 further comprising a second energy storage device configured to supply electrical energy to the voltage inverter.d2+4

›7.↳ 1The motor drive circuit of claim 1 wherein the input device comprises a receptacle configured to receive an electric plug.d2

›8.↳ 1The motor drive circuit of claim 1 wherein the input device further comprises a voltage rectifier coupled to the receptacle.d2+1

›10.↳ 1The motor drive circuit of claim 1 wherein the switch is configured to transfer electrical energy from a utility grid to the bi-directional DC-to-DC v…d2

›11.independentA method of manufacturing a motor drive circuit comprising:nproviding a first energy storage device;coupling a bi-directional buck/boost converter to …+3

›15.independentA traction system comprising:nan electric motor configured to propel a vehicle;a voltage inverter configured to supply an AC power signal to the elect…+5

Classifications

2 codes

IPC · International Patent Classification

Section B — Performing operations; transporting

B60L11/18

Section H — Electricity

H02J7/00

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3.7 y

1,363 days filing → grant

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Steve T Chung

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20120074774 A1	29 Mar 2012

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