Modular multi-pulse transformer rectifier for use in symmetric Multi-level power converter
First Claim
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1. An apparatus comprising:
- a plurality of transformers each to provide an output to at least one of a plurality of power cells configured to provide AC power to a load, each of the plurality of transformers including;
at least one primary winding and a plurality of secondary windings, wherein the at least one primary winding of each of the transformers is phase shifted with respect to its neighboring transformers, and the plurality of secondary windings are phase shifted with respect to the other secondary windings of the corresponding transformer, wherein the phase shift of the at least one primary winding is based on the phase shift of the secondary windings and a number of the plurality of transformers.
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Abstract
In one embodiment, a system may include multiple transformers each to provide an output to one or more power cells, where the power cells provide AC power to a load. Each transformer may have at least one primary winding and multiple secondary windings, where the primary winding of each transformer is phase shifted with respect to its neighboring transformers and the secondary windings are also phase shifted. The phase shift of the primary winding can be based on the phase shift of the secondary windings and a number of the plurality of transformers.
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Citations
19 Claims
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1. An apparatus comprising:
a plurality of transformers each to provide an output to at least one of a plurality of power cells configured to provide AC power to a load, each of the plurality of transformers including; at least one primary winding and a plurality of secondary windings, wherein the at least one primary winding of each of the transformers is phase shifted with respect to its neighboring transformers, and the plurality of secondary windings are phase shifted with respect to the other secondary windings of the corresponding transformer, wherein the phase shift of the at least one primary winding is based on the phase shift of the secondary windings and a number of the plurality of transformers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a plurality of modular transformers each including at least one phase-shifted primary set of windings to receive power from a utility connection and a plurality of secondary sets of windings; and a plurality of power cells each coupled to one of the secondary sets of windings of one of the modular transformers, wherein a first subset of the power cells are coupled to a first phase output line, a second subset of the power cells are coupled to a second phase output line, and a third subset of the power cells are coupled to a third phase output line, and wherein each modular transformer provides an output to a first number of power cells of a pair of the three phase output lines and a second number of power cells of a last of the phase output lines, wherein the first number of power cells and the second number of power cells are different and wherein any of the plurality of power cells can be coupled to any of the secondary sets of windings of any of the plurality of modular transformers. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a plurality of transformers each to provide an output to at least one of a plurality of power cells coupled to at least one phase output line and configured to provide AC power to a load, each of the plurality of transformers including at least one primary winding and a plurality of secondary windings, wherein the primary winding of each of the transformers is phase shifted with respect to its neighboring transformers, and the plurality of secondary windings are phase shifted with respect to the other secondary windings of the corresponding transformer; and a non-phase-shifted transformer to provide an output to at least one second power cell coupled to the at least one phase output line, wherein at least one second power cell is configured to perform partial regeneration from the load. - View Dependent Claims (18, 19)
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Specification