MULTILEVEL POWER CONVERSION
First Claim
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1. A power converter comprising:
- at least one high-frequency link comprising a primary winding and at least one secondary winding;
at least one primary circuit connected to one or more of the primary windings of said at least one high-frequency links, the at least one primary circuit operable to apply a voltage of at least one capacitive element as bi-polar voltage pulses to said one or more primary windings; and
at least one secondary circuit connected to one or more of the secondary windings of said at least one high-frequency links, the at least one secondary circuit operable to apply a voltage across said one or more secondary windings to at least one inductive element;
the at least one secondary circuit further operable to short-circuit at least one of said one or more secondary windings under at least one load condition to increase the current in said at least one of said one or more secondary windings with respect to the positive voltage of said at least one of said one or more secondary windings prior to the voltage applied to one or more of the primary windings of said at least one high-frequency links changing polarity;
the power converter operable to apply at least two non-zero and non-concentric around zero voltage levels to said at least one inductive elements, said at least two non-zero and non-concentric around zero voltage levels are with respect to at least one return connection of said at least one inductive elements.
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Abstract
A power converter comprises at least one high-frequency link having a primary winding and at least one secondary winding. At least one primary circuit is connected to each primary winding and is operable to apply the voltage of at least one capacitive element to the primary winding. At least one secondary circuit is connected to one or more secondary windings of the high-frequency links and is operable to apply the voltage of one or more of the secondary windings to at least one inductive element. The power converter is operable to apply multilevel voltages to the inductive elements.
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Citations
25 Claims
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1. A power converter comprising:
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at least one high-frequency link comprising a primary winding and at least one secondary winding; at least one primary circuit connected to one or more of the primary windings of said at least one high-frequency links, the at least one primary circuit operable to apply a voltage of at least one capacitive element as bi-polar voltage pulses to said one or more primary windings; and at least one secondary circuit connected to one or more of the secondary windings of said at least one high-frequency links, the at least one secondary circuit operable to apply a voltage across said one or more secondary windings to at least one inductive element; the at least one secondary circuit further operable to short-circuit at least one of said one or more secondary windings under at least one load condition to increase the current in said at least one of said one or more secondary windings with respect to the positive voltage of said at least one of said one or more secondary windings prior to the voltage applied to one or more of the primary windings of said at least one high-frequency links changing polarity; the power converter operable to apply at least two non-zero and non-concentric around zero voltage levels to said at least one inductive elements, said at least two non-zero and non-concentric around zero voltage levels are with respect to at least one return connection of said at least one inductive elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of operating a power converter, comprising:
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applying a voltage across at least one capacitive element as bi-polar voltage pulses to a primary winding of at least one high-frequency link via a primary circuit; wherein each of at least one high-frequency links further comprises at least one secondary winding; applying a voltage across one or more secondary windings of said at least one high-frequency links to at least one inductive element via a secondary circuit; short-circuiting at least one of said one or more secondary windings via said secondary circuit under at least one load condition to increase the current in said at least one of said one or more secondary windings with respect to the positive voltage of said at least one of said one or more secondary windings prior to the voltage applied to one or more of the primary windings of said at least one high-frequency links changing polarity; and applying at least two non-zero and non-concentric around zero voltage levels to said at least one inductive elements, said at least two non-zero and non-concentric around zero voltage levels are with respect to at least one return connection of said at least one inductive elements. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A power converter comprising:
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at least one high-frequency link comprising a primary winding and at least one secondary winding; at least one primary circuit connected to one or more of the primary windings of said at least one high-frequency links, the at least one primary circuit operable to apply a voltage of at least one capacitive element as bi-polar voltage pulses to said one or more primary windings; one or more of the at least one primary circuits further operable with both positive and negative voltage across one or more of said at least one capacitive elements; and at least one secondary circuit connected to one or more of the secondary windings of said at least one high-frequency links, the at least one secondary circuit operable to apply a voltage across said one or more secondary windings to at least one inductive element; the power converter operable to apply at least two non-zero and non-concentric around zero voltage levels to said at least one inductive elements, said at least two non-zero and non-concentric around zero voltage levels are with respect to at least one return connection of said at least one inductive elements. - View Dependent Claims (18, 19)
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20. A power converter comprising:
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at least one high-frequency link comprising a primary winding and at least one secondary winding; at least one primary circuit connected to one or more of the primary windings of said at least one high-frequency links, the at least one primary circuit operable to apply a voltage of at least one capacitive element as bi-polar voltage pulses to said one or more primary windings; and at least two secondary circuits, each of the at least two secondary circuits connected to one or more of the secondary windings of said at least one high-frequency links; the at least two secondary circuits operable to apply a voltage across said one or more secondary windings to at least one inductive element; two or more of the at least two secondary circuits are each connected to at least two different secondary windings of said at least one high-frequency links and operable to apply the voltage across said at least two different secondary windings to at least one inductive element.
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21. The power converter of claim 21, wherein each of the at least one high-frequency links that is connected to the same secondary circuit of said at least two secondary circuits is connected to the same primary circuit of said at least one primary circuits.
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22. A power converter comprising:
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at least one high-frequency link comprising a primary winding and at least one secondary winding; at least one primary circuit connected to one or more of the primary windings of said at least one high-frequency links, the at least one primary circuit operable to apply a voltage of at least one capacitive element as bi-polar voltage pulses to said one or more primary windings; and at least one secondary circuit connected to two or more of the secondary windings of said at least one high-frequency links, the at least one secondary circuit operable to apply a voltage across said two or more secondary windings to at least one inductive element; the at least one secondary circuit is capable of short-circuiting each of said two or more secondary windings; the power converter operable to apply a voltage across at least two of said two or more of said secondary windings to said at least one inductive elements, and also a different non-zero voltage of at least one of said two or more of said secondary windings to said at least one inductive elements, said different non-zero voltage is with respect to at least one return connection of said at least one inductive elements. - View Dependent Claims (23, 24, 25)
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Specification