AC/DC power conversion system and method of manufacture of same
First Claim
1. A power converter, comprising:
- a transformer having;
three primary windings configured to receive respective phases of a three-phase alternating current (AC) input signal in a delta configuration; and
three secondary windings each split into two portions, the portions of the secondary windings coupled together into a closed regular hexagon, with each portion of each secondary winding having at least two taps and the taps distributed at regular angles on the closed regular hexagon;
a first rectification path coupled between taps of the secondary windings and a positive output of the power converter and having an inductance; and
a second rectification path coupled between taps of the secondary windings and a negative output of the power converter and having an inductance different from the inductance of the first rectification path, wherein in operation, the difference in inductance causes the first and second rectification paths to convert twelve-phase AC signals into twenty-four pulse direct-current voltage.
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Accused Products
Abstract
A power converter has a transformer having three primary windings configured to receive respective phases of a three-phase alternating current (AC) input signal in a delta configuration and three secondary windings, each split into two portions, wherein the portions are coupled together in a regular hexagon. The power converter includes a rectifier having a first rectifier path coupled between taps of the secondary windings and a positive output of the power converter and a second rectifier path coupled between taps of the secondary windings and a negative output. One of the secondary windings may be reversed with respect to the other secondary windings. The primary windings may be split with a corresponding secondary winding sandwiched between portions of the primary. One of the paths may have a different inductance than the other path.
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Citations
34 Claims
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1. A power converter, comprising:
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a transformer having; three primary windings configured to receive respective phases of a three-phase alternating current (AC) input signal in a delta configuration; and three secondary windings each split into two portions, the portions of the secondary windings coupled together into a closed regular hexagon, with each portion of each secondary winding having at least two taps and the taps distributed at regular angles on the closed regular hexagon; a first rectification path coupled between taps of the secondary windings and a positive output of the power converter and having an inductance; and a second rectification path coupled between taps of the secondary windings and a negative output of the power converter and having an inductance different from the inductance of the first rectification path, wherein in operation, the difference in inductance causes the first and second rectification paths to convert twelve-phase AC signals into twenty-four pulse direct-current voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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coupling three primary windings of a transformer together in a differential configuration to receive respective phases of a three-phase alternating current; coupling split portions of three secondary windings of the transformer together into a regular hexagonal configuration; providing a plurality of taps distributed at regular angles on the secondary windings, each split secondary winding portion having at least two taps; forming a first rectification path between the plurality of taps and a positive output, the first rectification path having an inductance; and forming a second rectification path between the plurality of taps and a negative output, the second rectification path having an inductance different than the inductance of the first rectification path, wherein, in operation, the difference in inductance causes the first and second rectification paths to convert twelve-phase AC power signals into twenty-four pulse direct-current voltage. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A power converter, comprising:
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means for converting three-phase alternating current (AC) power signals into multi-phase AC power signals; first means for rectifying multi-phase AC power signals; second means for rectifying multiphase AC power signals; first means for coupling to couple the means for converting to the first means for rectifying and to couple the first means for rectifying to a first output of the power converter; and second means for coupling to couple the means for converting to the second means for rectifying and to couple the second means for rectifying to a second output of the power converter, wherein the first means for coupling has an inductance different than an inductance of the second means for coupling, wherein the difference in inductance causes the power converter, in operation, to convert twelve-phase AC power signals into twenty-four pulse direct-current voltage. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A power converter, comprising:
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a transformer having; three primary windings in a delta configuration and coupled to respective phases of a three-phase alternating current (AC) input; and three secondary windings each split into two portions, the portions of the secondary windings coupled together into a closed regular hexagon, with each portion of each secondary winding having at least two taps with the taps distributed at regular angles on the closed regular hexagon; a first rectification path coupled between taps of the secondary windings and a positive output of the power converter and having an inductance; and a second rectification path coupled between taps of the secondary windings and a negative output of the power converter and having an inductance different from the inductance of the first rectification path, wherein the inductance of one of the rectification paths is approximately five times the inductance of the other rectification path and the difference in inductance causes the power converter, in operation, to convert 12-phase AC power signals into 24 pulse direct-current voltage. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification