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US 9,793,820 B2Granted
Six-phase supplied transformer rectifier unit
AssigneeThe Boeing Company
InventorsJian Huang, Christopher Mark Severns, Alan Thomas Bernier
Life of this patent
Estimating the term…
Abstract
A method and apparatus for forming a direct current power supply. An apparatus comprises a transformer and a rectifier. The transformer is figured to output a plurality of phase-shifted alternating currents in response to receiving a plurality of alternating currents. The plurality of alternating currents and the plurality of phase-shifted alternating currents form a plurality of input alternating currents that are offset relative to each other by one-twelfth of a cycle in phase. The rectifier is configured to form a direct current power supply having a common mode voltage reduced to zero within selected tolerances in response to receiving the plurality of input alternating currents.
Claims20
An apparatus comprising:
- a transformer configured to output a plurality of phase-shifted alternating currents in response to receiving a plurality of alternating currents, wherein the plurality of alternating currents is six alternating currents and the plurality of phase-shifted alternating currents is six phase-shifted alternating currents;
- and
- a rectifier configured to form a direct current power supply having a common mode voltage reduced to zero within selected tolerances and connected to receive the plurality of alternating currents and the plurality of phase-shifted alternating currents as a plurality of input alternating currents, wherein the plurality of input alternating currents is twelve input alternating currents including the six alternating currents and the six phase-shifted alternating currents, and wherein each of the twelve input alternating currents is offset relative to each of two other of the twelve input alternating currents by one-twelfth of a cycle in phase.
An apparatus comprising:
- a transformer configured to output a plurality of phase-shifted alternating currents in response to receiving a plurality of alternating currents, wherein the plurality of alternating currents is six alternating currents and the plurality of phase-shifted alternating currents is six phase-shifted alternating currents;
- a rectifier configured to form a direct current power supply having a common mode voltage reduced to zero within selected tolerances and connected to receive the plurality of alternating currents and the plurality of phase-shifted alternating currents as a plurality of input alternating currents, wherein the plurality of input alternating currents is twelve input alternating currents including the six alternating currents and the six phase-shifted alternating currents;
- wherein the transformer comprises a single core having a plurality of legs and a plurality of windings associated with the plurality of legs;
- and
- wherein the plurality of windings comprises:
- a first winding wrapped around a first leg in the plurality of legs and configured to receive a first alternating current in the plurality of alternating currents,
- a second winding wrapped around the first leg in the plurality of legs, wherein the second winding is connected to the first winding to form a connection and configured to receive a second alternating current in the plurality of alternating currents, and
- a third winding wrapped around a second leg in the plurality of legs, wherein the third winding is connected to the connection between the first winding and the second winding and to a line configured to carry a phase-shifted alternating current in the plurality of phase-shifted alternating currents to the rectifier.
5 more elements
An apparatus comprising:
- a transformer configured to output a plurality of phase-shifted alternating currents in response to receiving a plurality of alternating currents, wherein the plurality of alternating currents is six alternating currents and the plurality of phase-shifted alternating currents is six phase-shifted alternating currents;
- a rectifier configured to form a direct current power supply having a common mode voltage reduced to zero within selected tolerances and connected to receive the plurality of alternating currents and the plurality of phase-shifted alternating currents as a plurality of input alternating currents, wherein the plurality of input alternating currents is twelve input alternating currents including the six alternating currents and the six phase-shifted alternating currents;
- wherein the transformer comprises a single core having a plurality of legs and a plurality of windings associated with the plurality of legs;
- and
- wherein the plurality of legs includes six legs and the plurality of windings includes eighteen windings.
2 more elements
An apparatus comprising:
- a core having a plurality of legs;
- a plurality of first windings, wherein each of the plurality of first windings is wrapped around a corresponding leg of the plurality of legs and configured to receive a corresponding alternating current of a plurality of alternating currents;
- a plurality of second windings, wherein each of the plurality of second windings is connected to a corresponding first winding in the plurality of first windings to form a connection and wrapped around a same leg around which the corresponding first winding is wrapped, and wherein each of the plurality of second windings is configured to receive a different corresponding alternating current of the plurality of alternating currents than the corresponding alternating current received by the corresponding first winding;
- a plurality of third windings, wherein each of the plurality of third windings is wrapped around one of the plurality of legs and wherein a third winding in the plurality of third windings that is wrapped around a particular leg in the plurality of legs is connected to the connection formed by a first winding in the plurality of first windings and a second winding in the plurality of second windings that are wrapped around a different leg in the plurality of legs than the particular leg, wherein:
- the core, the plurality of first windings, the plurality of second windings, and the plurality of third windings form a transformer configured to output a plurality of phase-shifted alternating currents;
- a rectifier configured to form a direct current power supply in response to receiving the plurality of alternating currents and the plurality of phase-shifted alternating currents;
- a first set of lines configured to carry the plurality of alternating currents to the plurality of first windings and the plurality of second windings;
- a second set of lines configured to carry the plurality of alternating currents to the rectifier;
- and
- a third set of lines configured to carry the plurality of phase-shifted alternating currents from the plurality of third windings to the rectifier, wherein the plurality of alternating currents and the plurality of phase-shifted alternating currents form a plurality of input alternating currents for the rectifier.
7 more elements
A method for forming a direct current power supply, the method comprising:
- generating a plurality of phase-shifted alternating currents at a transformer in response to receiving a plurality of alternating currents, wherein the plurality of alternating currents is six alternating currents, the plurality of phase-shifted alternating currents is six phase-shifted alternating currents;
- receiving the plurality of alternating currents and the plurality of phase-shifted alternating currents as a plurality of input alternating currents at a rectifier, wherein each of the input alternating currents in the plurality of input alternating currents is offset relative to each of two other of the input alternating currents in the plurality of input alternating currents by one-twelfth of a cycle in phase;
- and
- forming the direct current power supply having a common mode voltage reduced to zero within selected tolerances in response to receiving the plurality of input alternating currents at the rectifier.
1 more element
A method for forming a direct current power supply, the method comprising:
- generating a plurality of phase-shifted alternating currents at a transformer in response to receiving a plurality of alternating currents, wherein the plurality of alternating currents is six alternating currents, the plurality of phase-shifted alternating currents is six phase-shifted alternating currents;
- receiving the plurality of alternating currents and the plurality of phase-shifted alternating currents as a plurality of input alternating currents at a rectifier, wherein the input alternating currents in the plurality of input alternating currents is offset relative to each other by one-twelfth of a cycle in phase;
- forming the direct current power supply having a common mode voltage reduced to zero within selected tolerances in response to receiving the plurality of input alternating currents at the rectifier;
- receiving a first alternating current in the plurality of alternating currents at a first winding wrapped around a leg in a plurality of legs of a single core;
- and
- receiving a second alternating current in the plurality of alternating currents at a second winding wrapped around the leg, wherein the second winding is connected to the first winding to form a connection.
3 more elements
Dependencies are inferred from the claim text.