US 2010/0148899 A1 · SYMMETRICAL AUTO TRANSFORMER DELTA TOPOLOGIES · patentgrep

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Abstract

Various embodiments of multi-phase transformers are disclosed. Exemplary transformer includes primary windings, secondary windings and third windings. Primary windings, secondary windings and third windings may include sub windings coupled to form junctions. Primary windings are coupled at ends to form a delta configurations. Secondary windings are coupled to primary windings. Third windings are coupled to primary windings and secondary windings. Secondary windings and the third windings are magnetically coupled to primary windings. The outputs at second ends of third windings are greater than the outputs at the second ends of secondary windings. In some embodiments, the outputs at adjacent second ends of the third windings are substantially equal. In some embodiments, the phase angle difference of outputs at adjacent second ends of third windings are substantially equal. In some embodiments, the phase angle difference of outputs at adjacent second ends of secondary windings are substantially equal.

Claims32

Dependent claims

A multi-phase transformer, comprising:

a first group of windings having a plurality of primary windings;
wherein each primary winding includes one or more sub primary windings coupled in series, and a junction of two sub primary windings defines an interior junction;
wherein each end of the primary windings is coupled to an end of another primary winding to form a delta configuration and a junction of two primary windings defines an exterior junction;
and
wherein each of the primary windings is configured to receive a phase of a multi-phase input voltage at the exterior junction;
a second group of windings having a plurality of secondary windings and each secondary winding has a first end and a second end;
wherein the first end of each secondary winding is coupled to one of the primary windings;
wherein each secondary winding is magnetically coupled to a primary winding from among the plurality of plurality of primary winding;
and
a third group of windings having a plurality of third windings;
wherein each third winding includes a first end and a second end, and the first end of each of the third winding is coupled to a secondary winding from among the plurality of secondary windings or to a primary winding from among the plurality of primary windings;
wherein each third winding is magnetically coupled to a primary winding from among the plurality of primary windings;
wherein the third group of windings is configured such that an output voltage at the second end of the third windings is higher than an output voltage at the second end of the secondary windings and the exterior junction of the primary windings.

10 more elements

A multi-phase transformer, comprising:

a first group of windings having a plurality of primary windings;
wherein each primary winding includes one or more sub primary windings coupled in series, and a junction of two sub primary windings define an interior junction;
wherein each end of a primary winding from among the plurality of primary windings is coupled to an end of another primary winding to form a delta configuration and a junction of two primary windings defines an exterior junction;
and each of the plurality of primary windings is configured to receive a phase of a multi-phase input voltage at the exterior junction;
a second group of windings having a plurality of secondary windings and each secondary winding has a first end and a second end;
wherein each secondary winding is magnetically coupled to a primary winding from among the plurality of primary windings;
and
wherein the first end of each secondary winding is coupled to an interior junction of one of the primary windings;
and
a third group of windings having a plurality of third windings;
wherein each third winding is magnetically coupled to a primary winding;
wherein each of the third winding includes a first end and a second end;
wherein the first end is coupled to an interior junction of one of the plurality of primary windings other than an interior junction to which a secondary winding is coupled or to an exterior junction of one of the primary winding from among the plurality of primary windings;
and
wherein the third group of windings is configured such that an output voltage at the second end of the third windings is higher than an output voltage at the second end of the secondary windings and the exterior junction of the primary windings.

12 more elements

A multi-phase transformer, comprising:

a first group of windings having a plurality of primary windings;
wherein each primary winding includes one or more sub primary windings coupled in series, and a junction of two sub primary windings defines an interior junction;
wherein each end of the primary windings is coupled to an end of another primary winding to form a delta configuration and a junction of two primary windings defines an exterior junction;
and each of the primary winding is configured to receive a phase of a multi-phase input voltage at the exterior junction;
a second group of windings having a plurality of secondary windings and each secondary winding has a first end and a second end;
wherein each secondary winding is magnetically coupled to a primary winding;
and wherein the first end of each of the plurality of secondary winding is coupled to an interior junction of one of the plurality of primary windings;
and
a third group of windings having a plurality of third windings;
wherein each third winding is magnetically coupled to a primary winding from among the plurality of primary windings;
wherein each of the third winding includes a first end and a second end;
wherein the first end of each of the third winding is coupled to a second end of a secondary winding from among the plurality of secondary windings, an interior junction of the primary winding or an exterior junction of the primary winding;
and
wherein the third group of windings is configured such that an output voltage at the second end of the third windings is higher than an output voltage at the second end of the plurality secondary windings and the exterior junction of the plurality of primary windings.

11 more elements

A multi-phase transformer, comprising:

a first group of windings having a plurality of primary windings;
wherein each primary winding includes one or more sub primary windings coupled in series, and a junction of two sub primary windings define an interior junction;
wherein each end of the primary windings is coupled to an end of another primary winding to form a delta configuration and a junction of two primary windings define an exterior junction;
and
wherein each of the plurality of primary windings is configured to receive a phase of a multi-phase input voltage at the exterior junction;
a second group of windings having a plurality of secondary windings and each secondary winding has a first end and a second end;
wherein each of the secondary winding is magnetically coupled to a primary winding from among the plurality of primary windings;
and
wherein some of the secondary windings include a plurality of sub-windings coupled in series, and a junction of two sub-windings defines a sub-junction;
wherein the first end of each secondary winding is coupled to an interior junction of one of the primary windings;
and
a third group of windings having a plurality of third windings;
wherein each of the third winding is magnetically coupled to a primary winding from among the plurality of primary windings;
wherein each of the third winding includes a first end and a second end;
wherein the first end of each of the third winding is coupled to a second end of a secondary winding from among the plurality of secondary windings, a sub-junction of a secondary winding or an exterior junction of the primary winding from among the plurality of primary windings;
wherein the third group of windings is configured such that an output voltage at the second end of the third windings is higher than an output voltage at the second end of the secondary windings and the exterior junction of the primary windings.

13 more elements

A multi-phase transformer, comprising:

a first group of windings having a plurality of primary windings;
wherein each primary winding includes one or more sub primary windings coupled in series, and a junction of two sub primary windings define an interior junction;
wherein each end of the primary windings is coupled to an end of another primary winding to form a delta configuration and a junction of two primary windings define an exterior junction;
wherein each of the primary windings is configured to receive a phase of a multi-phase input voltage at the exterior junction;
a second group of windings having a plurality of secondary windings and each secondary winding has a first end and a second end;
wherein some of the secondary windings include a plurality of sub-winding connected in series, junction of two sub-windings define a sub-junction;
wherein each secondary winding is magnetically coupled to a primary winding;
wherein the first end of each of the secondary winding is coupled to an interior junction of one of the primary windings or to the exterior junction of the primary windings;
and
a third group of windings having a plurality of third windings;
wherein each of the third winding includes a first end and a second end;
wherein some of the third windings include at least two sub-windings connected in series, with junction of two sub-windings define a sub-junction;
wherein each of the third winding is magnetically coupled to a primary winding;
wherein the first end of each of the third winding is coupled to a sub-junction of a secondary winding or an exterior junction of the primary winding;
and
wherein the third group of windings is configured such that an output voltage at the second end of the third windings is higher than an output voltage at the second end of the secondary windings and the exterior junction of the primary windings.

13 more elements

Dependencies are inferred from the claim text.