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US 10,122,304 B2Granted
Augmented power converter
AssigneeThe Boeing Company
InventorsRandy L. Brandt, James L. Peck, Jr., Leora Peltz
Life of this patent
Estimating the term…
Abstract
An augmented power converter may include a motor drive circuit. The motor drive circuit may include a motor drive transformer to convert a two-phase DC voltage to a three-phase output voltage for operating an electrical device. The motor drive circuit may also include a power control component for each phase of the two-phase voltage.
Claims20
A motor drive circuit, comprising:
- a motor drive transformer for converting a two-phase input voltage to a three-phase drive voltage for driving a three-phase electric motor;
- a controller for controlling switching of each phase of the two-phase input voltage;
- a power control transformer coupled to the controller;
- a first electronic switching device driven by a first phase output of the power control transformer for activation of a first phase of the two-phase input of the motor drive transformer;
- and
- a second electronic switching device driven by a second phase output of the power control transformer for activation of a second phase of the two-phase input of the motor drive transformer, the power control transformer being connected between the controller and the first and second electronic switching devices, wherein the first and second electronic switching devices are alternately turned on and off to alternately activate the first and second phases of the motor drive transformer for commutating the electric motor;
- an electromagnetic interference (EMI) filter;
- an AC/DC power converter to convert a three-phase input voltage to the two-phase input voltage, wherein the EMI filter couples a power source to the AC/DC power converter for filtering electrical power from the power source to the AC/DC power converter;
- and
- a direct current (DC) link to couple the AC/DC power converter to the motor drive transformer.
7 more elements
A method for driving an electric motor, comprising:
- converting electrical power from a three-phase voltage source to a two-phase DC voltage;
- linking the two-phase DC voltage to a motor drive circuit;
- converting the two-phase DC voltage to a three-phase voltage for driving a three-phase electric motor;
- controlling activation of each phase of the two-phase DC voltage for commutation of the three-phase voltage driving the electric motor;
- using a first transformer to convert the two-phase DC voltage to the three-phase voltage for driving the three-phase electric motor;
- using a controller and a second transformer to alternately activate a first switching device and a second switching device to control respective activation of each phase of the two-phase DC voltage for commutation of the three-phase voltage driving the electric motor, the second transformer being connected between the controller and the first and second switching devices;
- providing an electromagnetic interference (EMI) filter;
- converting the three-phase voltage to the two-phase DC voltage using an AC/DC power converter, wherein the EMI filter couples a power source to the AC/DC power converter for filtering electrical power from the power source to the AC/DC power converter;
- and
- coupling the AC/DC power converter to the motor drive circuit by a direct current (DC) link.
7 more elements
Dependencies are inferred from the claim text.