WO2024010440A1 - 2- to 3-phase open star transformer - Google Patents

2- to 3-phase open star transformer Download PDF

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Publication number
WO2024010440A1
WO2024010440A1 PCT/MX2022/050090 MX2022050090W WO2024010440A1 WO 2024010440 A1 WO2024010440 A1 WO 2024010440A1 MX 2022050090 W MX2022050090 W MX 2022050090W WO 2024010440 A1 WO2024010440 A1 WO 2024010440A1
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phase
output
input
winding
type
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PCT/MX2022/050090
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Spanish (es)
French (fr)
Inventor
Gustavo ESCOBAR CARBALLO
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Escobar Carballo Gustavo
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Publication of WO2024010440A1 publication Critical patent/WO2024010440A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
    • H02M5/14—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion between circuits of different phase number

Definitions

  • the present invention is in the electrical area and refers to a winding arrangement for the transformation of electrical energy with two-phase input and three-phase output with symmetrical voltage.
  • Electric current transformers are used in all economic sectors to adapt voltages and currents in high, medium and low voltage wiring.
  • the closest invention is the patent document MX265449B, called “Prism type electrical converter for generation, transmission, distribution and electric current supply and manufacturing method", which is an energy transformer that converts from 2 to 3 phases that uses a connection called prism that is applicable to two to three phase converters where by means of a winding arrangement and connections, the non-existent phase originates, obtaining a three-phase system, which through another output system At any voltage level, it provides usable three-phase voltage for any electrical distribution, transmission or generation system.
  • Prism type electrical converter for generation, transmission, distribution and electric current supply and manufacturing method is an energy transformer that converts from 2 to 3 phases that uses a connection called prism that is applicable to two to three phase converters where by means of a winding arrangement and connections, the non-existent phase originates, obtaining a three-phase system, which through another output system At any voltage level, it provides usable three-phase voltage for any electrical distribution, transmission or generation system.
  • This system allows you to connect any single-phase, two-phase or three-phase load from a 2-wire two-phase power supply; However, said invention induces a strong current through the neutral, which implies that the installation requires a system of additional connections for the grounds. Likewise, this invention requires that the neutral conductors must be thicker or of greater capacity.
  • a solution is sought to convert a two-phase input to a three-phase output by means of an electric current transformer that can be used in high, medium and low voltage, with symmetrical output voltages and without currents in the neutral.
  • Figure 1 Shows the vector diagram of a 2 to 3 phase open star transformer (10).
  • Figure 2. Shows the connection diagram of a 2 to 3 phase open star transformer (10).
  • Figure 3 Shows the vector diagram of a 2 to 3 phase open star transformer (10) with inverted polarity.
  • Figure 4 Shows the connection diagram of a 2 to 3 phase open star transformer (10) with inverted polarity.
  • Figure 5 Shows the view of a Wescor type three-phase core.
  • Figure 6 Shows the view of a column-type three-phase core.
  • Figure 7 Shows the configuration of the winding connections of a 2 to 3 phase open star transformer (10) in a three-phase Wescor type core.
  • Figure 8 Shows the configuration of the winding connections of a 2 to 3-phase open star transformer (10) in a column-type three-phase core.
  • Figure 9. Shows the configuration of the connection with inverted polarity of the windings of a 2 to 3 phase open star transformer (10) in a three-phase Wescor type core.
  • Figure 10 Shows the configuration of the connection with inverted polarity of the windings of a 2 to 3-phase open star transformer (10) in a three-phase column-type core.
  • the 2 to 3-phase open star transformer device (10) comprises a connection system where the two-phase input has an open star-type configuration with 2 phases and the three-phase output has a star-type configuration with 3 symmetrical phases.
  • the vector diagram in Figure 1 shows that in the input configuration there are 2 phases, where H1 and H2 are the 2 input phase lines with a 120° phase shift between both energy lines.
  • the configuration of the input winding is open star, where X0H0 is the common ground of both phase lines.
  • the three-phase output is determined by a winding in a star-type configuration where X1, X2 and X3 are the line outputs of each phase, with a 120° phase difference between each one. of them.
  • the conversion of the 2 input phases to the 3 output phases is generated by means of a delta or delta connection in the same core of the transformer.
  • This type of transformer is called a 2 to 3 phase open star transformer (10) and consists of an arrangement with 3 types of winding configurations in its core: a first two-phase input winding with an open star type connection, then a second winding in delta type connection and finally a three-phase output winding in star type connection.
  • the 2 to 3 phase open star transformer device (10) can have windings in Wescor type or column type cores as seen in Figures 5 and 6; or some other type of configuration currently used.
  • Figure 2 shows the diagram of the connections of each of the windings, where the input H1 and H2 are shown with the 2 input phases with the common terminal X0H0 grounded; You can also see the star-type output configuration with the 3 balanced phases where X1, X2 and X3 are the outputs of each of the phases and the common terminal X0H0 is grounded.
  • the configuration of the star-type output winding with its 3 terminals has a constant magnetic flux that, according to Ampere's law, is converted to electric current at terminals X1, X2 and X3, generating thus a three-phase and symmetrical output from a two-phase input.
  • Figure 3 shows the vector diagram of a vahant of the 2 to 3-phase open star Transformer (10) with an inverted open star type input configuration, in addition to an inverted star type output configuration and with an inverted delta connection. . This same inverted configuration can be seen in figure 4.
  • Figure 5 shows, illustratively, the perspective view of a Wescor type core and figure 6 shows the perspective view of a column type core, which can be used for the 2 to 3 phase open star transformer ( 10) described in this invention, likewise, other types of cores with columns of any geometric shape or of the Evans type can be used.
  • Figure 6 shows the front view of a Wescor type core for the 2 to 3 phase open star transformer (10) with the input connections where H1 is the terminal of one of the phases found in the column. left of the nucleus and H2 is the terminal of the second phase found in the right column.
  • H1 is the terminal of one of the phases found in the column. left of the nucleus
  • H2 is the terminal of the second phase found in the right column.
  • X1' is the connection of the output of the winding of the first column with the input of the winding of the third column
  • X2' connects the input of the winding of the first column with the output of the winding of the second column
  • X3' connects the input of the second winding with the output of the third winding.
  • Each winding directly influences the 3 columns of the core, creating a constant magnetic flux in each column and, in turn, creating a constant and symmetrical electric current in the terminals X1, X2 and X3, where an output phase is connected. located at terminals X1 and X0H0, a second phase is located between X2 and XOHO, and a third phase is located between terminals X3 and XOHO.
  • Figure 6 shows this same connection of the 2 to 3-phase open star transformer (10) in a column-type core.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Transformers (AREA)

Abstract

The present invention relates to a 2- to 3-phase open star transformer device (10) comprising a connection system wherein it has a 2-phase open star configuration at the input and it has a 3-phase star configuration at the output. The vector diagram of figure 1 shows that there are 2 phases in the input configuration, wherein H1 and H2 are the 2 input phase lines with a phase shift of 120° between both power lines. The configuration is an open star, wherein X0H0 is the earth common to both phase lines. The same vector diagram of figure 1 shows that the output is determined by a star connection, wherein X1, X2 and X3 are the outputs of each phase with a phase shift of 120° between each of them.

Description

Transformador De 2 A 3 Fases Estrella Abierta 2 To 3 Phase Open Star Transformer
OBJETO Y CAMPO DE LA INVENCIÓN OBJECT AND FIELD OF THE INVENTION
La presente invención es del área eléctrica y se refiere a un arreglo embobinado para la transformación de energía eléctrica con entrada bifásica y salida trifásica con tensión simétrica. The present invention is in the electrical area and refers to a winding arrangement for the transformation of electrical energy with two-phase input and three-phase output with symmetrical voltage.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Los transformadores de corriente eléctrica son empleados en todos los sectores económicos para la adaptación de voltajes y corrientes en los cableados de alta, media y baja tensión. Electric current transformers are used in all economic sectors to adapt voltages and currents in high, medium and low voltage wiring.
En el sector industrial, comercial y residencial se emplean líneas de energía que proporcionan el voltaje y la corriente para cada necesidad. De acuerdo a las necesidades se pueden emplear 1 , 2 o 3 fases de corriente eléctrica. Siendo que la transportación de energía de 3 fases es usada comúnmente, esta no se encuentra disponible en todas las regiones debido a los costos que implica su manejo. Por lo tanto, se han diseñado algunas soluciones para que en los sitios donde se requiera, se pueda realizar la transformación a 3 fases desde una línea de energía de 2 fases. In the industrial, commercial and residential sectors, power lines are used that provide the voltage and current for each need. According to needs, 1, 2 or 3 phases of electric current can be used. Since 3-phase energy transportation is commonly used, it is not available in all regions due to the costs involved in its management. Therefore, some solutions have been designed so that in places where it is required, the transformation to 3 phases can be carried out from a 2-phase power line.
En el mercado existen muchos dispositivos electrónicos que permiten la conversión de 2 a 3 fases de corriente, pero suelen tener un costo elevado y no es viable su instalación, configuración y mantenimiento en cualquier zona; estos convertidores electrónicos tienen funcionalidad principalmente en baja tensión por lo que en media y alta tensión no proveen una solución al problema de la conversión. There are many electronic devices on the market that allow the conversion of 2 to 3 phases of current, but they usually have a high cost and their installation, configuration and maintenance in any area are not feasible; These electronic converters have functionality mainly in low voltage, so in medium and high voltage they do not provide a solution to the conversion problem.
Se han diseñado algunas soluciones para convertir 2 a 3 fases que atienden los sectores de baja, media y alta tensión, por ejemplo, la invención más cercana es el documento de patente MX265449B, denominada “Convertidor eléctrico tipo prisma para generación, transmisión, distribución y suministro de corriente eléctrica y método de fabricación”, el cual se trata de un transformador de energía que convierte de 2 a 3 fases que emplea una conexión denominada prisma que es aplicable a convertidores de dos a tres fases donde por medio de un arreglo de embobinado y conexiones se origina la fase no existente, obteniéndose un sistema trifásico, que por medio de otro sistema de salida en cualquier nivel de tensión proporciona la tensión trifásica utilizable para cualquier sistema eléctrico de distribución trasmisión o generación. Dicho sistema permite conectar cualquier carga monofásica, bifásica o trifásica a partir de una alimentación bifásica de 2 hilos; sin embargo, dicha invención induce una fuerte corriente por el neutro, lo cual implica que la instalación requiera de un sistema de conexiones adicionales para la tierras, asimismo esta invención requiere que los conductores del neutro deban ser más gruesos o de mayor capacidad. Some solutions have been designed to convert 2 to 3 phases that serve the low, medium and high voltage sectors, for example, the closest invention is the patent document MX265449B, called “Prism type electrical converter for generation, transmission, distribution and electric current supply and manufacturing method", which is an energy transformer that converts from 2 to 3 phases that uses a connection called prism that is applicable to two to three phase converters where by means of a winding arrangement and connections, the non-existent phase originates, obtaining a three-phase system, which through another output system At any voltage level, it provides usable three-phase voltage for any electrical distribution, transmission or generation system. This system allows you to connect any single-phase, two-phase or three-phase load from a 2-wire two-phase power supply; However, said invention induces a strong current through the neutral, which implies that the installation requires a system of additional connections for the grounds. Likewise, this invention requires that the neutral conductors must be thicker or of greater capacity.
También, se encuentra el documento WO2006126868A1 , denominado “Conexión de devanados para suministrar potencia trifásica a partir de una alimentación bifásica y transformador de distribución 2x3”, el cual consiste en una configuración de tres juegos de devanados distribuidos en tres columnas donde cada juego de devanados consiste en dos bobinas, la primera de dichas bobinas está seccionada en dos partes con una relación de espiras de dos a uno entre secciones, y la segunda bobina localizada en otra columna tiene una relación de espiras igual a la menor sección de la primera bobina, dichas primeras bobinas de los devanados están conectadas entre sí en configuración delta y en cada dicho juego de devanados el punto común de las secciones de la primera bobina, alimenta la segunda bobina ubicada en otra columna; las partes finales de dichas segundas bobinas de cada columna se conectan entre sí constituyendo el neutro, y las partes iniciales de las primeras bobinas en cada columna suministran las fases de salida. Sin embargo, este sistema utiliza una salida en zigzag, por lo tanto, al tratarse de una salida simétrica emplea una entrada en delta que puede generar problemática cuando unos de los devanados deja de operar y se desbalancea la entrada. Also, there is the document WO2006126868A1, called "Connection of windings to supply three-phase power from a two-phase supply and 2x3 distribution transformer", which consists of a configuration of three sets of windings distributed in three columns where each set of windings It consists of two coils, the first of said coils is sectioned into two parts with a ratio of turns of two to one between sections, and the second coil located in another column has a ratio of turns equal to the smallest section of the first coil, said first coils of the windings are connected to each other in a delta configuration and in each said set of windings the common point of the sections of the first coil feeds the second coil located in another column; The final parts of said second coils of each column are connected to each other constituting the neutral, and the initial parts of the first coils in each column supply the output phases. However, this system uses a zigzag output, therefore, since it is a symmetrical output, it uses a delta input that can cause problems when one of the windings stops operating and the input becomes unbalanced.
PROBLEMA TÉCNICO A RESOLVER TECHNICAL PROBLEM TO RESOLVE
Se busca una solución para convertir una entrada bifásica a una salida trifásica por medio de un transformador de corriente eléctrica que se pueda emplear en alta, media y baja tensión, con tensiones de salida simétrica y sin corrientes en el neutro. A solution is sought to convert a two-phase input to a three-phase output by means of an electric current transformer that can be used in high, medium and low voltage, with symmetrical output voltages and without currents in the neutral.
BREVE DESCRIPCION DE LAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
Figura 1. Muestra el diagrama vectorial de un Transformador de 2 a 3 fases estrella abierta (10). Figura 2. Muestra el diagrama de conexiones de un Transformador de 2 a 3 fases estrella abierta (10). Figure 1. Shows the vector diagram of a 2 to 3 phase open star transformer (10). Figure 2. Shows the connection diagram of a 2 to 3 phase open star transformer (10).
Figura 3. Muestra el diagrama vectorial de un Transformador de 2 a 3 fases estrella abierta (10) con polaridad invertida. Figure 3. Shows the vector diagram of a 2 to 3 phase open star transformer (10) with inverted polarity.
Figura 4. Muestra el diagrama de conexiones de un Transformador de 2 a 3 fases estrella abierta (10) con polaridad invertida. Figure 4. Shows the connection diagram of a 2 to 3 phase open star transformer (10) with inverted polarity.
Figura 5. Muestra la vista de un núcleo trifásico tipo Wescor. Figure 5. Shows the view of a Wescor type three-phase core.
Figura 6. Muestra la vista de un núcleo trifásico tipo columna. Figure 6. Shows the view of a column-type three-phase core.
Figura 7. Muestra la configuración de las conexiones de los devanados de un Transformador de 2 a 3 fases estrella abierta (10) en un núcleo trifásico tipo Wescor.Figure 7. Shows the configuration of the winding connections of a 2 to 3 phase open star transformer (10) in a three-phase Wescor type core.
Figura 8. Muestra la configuración de las conexiones de los devanados de un Transformador de 2 a 3 fases estrella abierta (10) en un núcleo trifásico tipo columna.Figure 8. Shows the configuration of the winding connections of a 2 to 3-phase open star transformer (10) in a column-type three-phase core.
Figura 9. Figura 7. Muestra la configuración de la conexión con polaridad invertida de los devanados de un Transformador de 2 a 3 fases estrella abierta (10) en un núcleo trifásico tipo Wescor. Figure 9. Figure 7. Shows the configuration of the connection with inverted polarity of the windings of a 2 to 3 phase open star transformer (10) in a three-phase Wescor type core.
Figura 10. Muestra la configuración de la conexión con polaridad invertida de los devanados de un Transformador de 2 a 3 fases estrella abierta (10) en un núcleo trifásico tipo columna. Figure 10. Shows the configuration of the connection with inverted polarity of the windings of a 2 to 3-phase open star transformer (10) in a three-phase column-type core.
DESCRIPCION DETALLADA DE LA INVENCIÓN DETAILED DESCRIPTION OF THE INVENTION
Haciendo referencia con más detalle a los diagramas, como se muestra de la figura 1 a la figura 10, se describe una realización preferida de la presente invención. Debe entenderse expresamente que esta realización ejemplar se proporciona únicamente con fines descriptivos y no pretende limitar indebidamente el alcance del presente concepto inventivo. Otras realizaciones y variaciones de la presente invención denominada Transformador de 2 a 3 fases estrella abierta (10) se consideran dentro del presente concepto inventivo como se establece en las reivindicaciones del presente documento. El dispositivo Transformador de 2 a 3 fases estrella abierta (10) comprende un sistema de conexiones donde en la entrada bifásica presenta una configuración de tipo estrella abierta con 2 fases y en la salida trifásica presenta una configuración de tipo estrella con 3 fases simétricas. Referring in more detail to the diagrams, as shown in Figure 1 to Figure 10, a preferred embodiment of the present invention is described. It should be expressly understood that this exemplary embodiment is provided for descriptive purposes only and is not intended to unduly limit the scope of the present inventive concept. Other embodiments and variations of the present invention called 2 to 3 phase open star transformer (10) are considered within the present inventive concept as set forth in the claims of this document. The 2 to 3-phase open star transformer device (10) comprises a connection system where the two-phase input has an open star-type configuration with 2 phases and the three-phase output has a star-type configuration with 3 symmetrical phases.
En el diagrama vectorial de la figura 1 se aprecia que en la configuración de entrada existen 2 fases, donde H1 y H2 son las 2 líneas de fase de entrada con un desfase de 120° entre ambas líneas de energía. La configuración del devanado de entrada es estrella abierta, donde X0H0 es la tierra en común de ambas líneas de fase. The vector diagram in Figure 1 shows that in the input configuration there are 2 phases, where H1 and H2 are the 2 input phase lines with a 120° phase shift between both energy lines. The configuration of the input winding is open star, where X0H0 is the common ground of both phase lines.
En el mismo diagrama vectorial de la figura 1 , se aprecia que la salida trifásica está determinada por un devanado en configuración de tipo estrella donde X1 , X2 y X3 son las salidas de línea de cada fase, con un desfase de 120° entre cada una de ellas. In the same vector diagram of Figure 1, it can be seen that the three-phase output is determined by a winding in a star-type configuration where X1, X2 and X3 are the line outputs of each phase, with a 120° phase difference between each one. of them.
La conversión de las 2 fases de entrada a las 3 fases de salida se genera por medio de una conexión delta o triángulo en el mismo núcleo del transformador. Este tipo de transformador se denomina Transformador de 2 a 3 fases estrella abierta (10) y consiste es un arreglo con 3 tipos de configuraciones de devanados en su núcleo: un primer devanado de entrada bifásica con conexión tipo estrella abierta, luego un segundo devanado en conexión tipo delta y finalmente un devanado de salida trifásica en conexión tipo estrella. The conversion of the 2 input phases to the 3 output phases is generated by means of a delta or delta connection in the same core of the transformer. This type of transformer is called a 2 to 3 phase open star transformer (10) and consists of an arrangement with 3 types of winding configurations in its core: a first two-phase input winding with an open star type connection, then a second winding in delta type connection and finally a three-phase output winding in star type connection.
El dispositivo Transformador de 2 a 3 fases estrella abierta (10) puede presentar devanados en núcleos de tipo Wescor o tipo columna según se aprecia en las figuras 5 y 6; o bien algún otro tipo de configuración empleada en la actualidad. The 2 to 3 phase open star transformer device (10) can have windings in Wescor type or column type cores as seen in Figures 5 and 6; or some other type of configuration currently used.
En la figura 2 se aprecia el diagrama de las conexiones de cada uno de los devanados, donde en se muestra la entrada H1 y H2 con las 2 fases de entrada con la terminal en común X0H0 aterrizada; también se aprecia la configuración de salida tipo estrella con las 3 fases balanceadas donde X1 , X2 y X3 son las salidas de cada una de las fases y la terminal X0H0 en común se encuentra aterrizada. Figure 2 shows the diagram of the connections of each of the windings, where the input H1 and H2 are shown with the 2 input phases with the common terminal X0H0 grounded; You can also see the star-type output configuration with the 3 balanced phases where X1, X2 and X3 are the outputs of each of the phases and the common terminal X0H0 is grounded.
Asimismo, en la figura 2, se aprecia el devanado del arreglo tipo delta que no tiene ninguna conexión eléctrica con el devanado de entrada tipo estrella abierta, ni con el devanado de la configuración de salida tipo estrella. La configuración tipo delta influye dentro del Transformador de 2 a 3 fases estrella abierta (10) debido al flujo magnético que pasa por el núcleo de tipo Wescor o tipo columna, de tal manera que el devanado de la configuración tipo delta convierte el flujo de la corriente eléctrica en flujo magnético de acuerdo a la Ley de Biot-Savat:
Figure imgf000007_0001
Likewise, in Figure 2, you can see the winding of the delta type arrangement that does not have any electrical connection with the open star type input winding, nor with the winding of the star type output configuration. The delta type configuration influences the 2 to 3 phase open star transformer (10) due to the magnetic flux that passes through the Wescor type or column type core, in such a way that the The delta type configuration converts the electric current flow into magnetic flux according to the Biot-Savat Law:
Figure imgf000007_0001
En este orden de ¡deas, la configuración del devanado de salida tipo estrella con sus 3 terminales cuenta con un flujo magnético constante que, de acuerdo a la ley de Ampere, es convertido a corriente eléctrica en las terminales X1 , X2 y X3, generando así una salida trifásica y simétrica a partir de una entrada bifásica. In this order of ideas, the configuration of the star-type output winding with its 3 terminals has a constant magnetic flux that, according to Ampere's law, is converted to electric current at terminals X1, X2 and X3, generating thus a three-phase and symmetrical output from a two-phase input.
En la figura 3 se muestra el diagrama vectorial de una vahante del Transformador de 2 a 3 fases estrella abierta (10) con una configuración de entrada tipo estrella abierta invertida, además de una configuración de salida de tipo estrella invertida y con una conexión delta invertida. Esta misma configuración invertida se puede visualizar en la figura 4. Figure 3 shows the vector diagram of a vahant of the 2 to 3-phase open star Transformer (10) with an inverted open star type input configuration, in addition to an inverted star type output configuration and with an inverted delta connection. . This same inverted configuration can be seen in figure 4.
La figura 5 se muestra, de manera ilustrativa, la vista en perspectiva de un núcleo tipo Wescor y la figura 6 muestra la vista en perspectiva de un núcleo tipo columna, los cuales pueden ser empleados para el Transformador de 2 a 3 fases estrella abierta (10) descrito en esta invención, asimismo, se pueden emplear otro tipo de núcleos con columnas de cualquier forma geométrica o del tipo Evans. Figure 5 shows, illustratively, the perspective view of a Wescor type core and figure 6 shows the perspective view of a column type core, which can be used for the 2 to 3 phase open star transformer ( 10) described in this invention, likewise, other types of cores with columns of any geometric shape or of the Evans type can be used.
En la figura 6 se muestra la vista frontal de un núcleo tipo Wescor para el T ransformador de 2 a 3 fases estrella abierta (10) con las conexiones de entrada en donde H1 es la terminal de una de las fases que se encuentra en la columna izquierda del núcleo y H2 es la terminal de la segunda fase que se encuentra en la columna derecha. En el mismo núcleo se encuentra el arreglo tipo delta donde en cada columna del núcleo se encuentra un devanado, donde X1’ es la conexión de la salida del devanado de la primer columna con la entrada del devanado de la tercera columna; a su vez, X2’ conecta la entrada del devanado de la primer columna con la salida del devanado de la segunda columna; y X3’ conecta la entrada del segundo devanado con la salida del tercer devanado. Cada devanado influye directamente en las 3 columnas del núcleo creando un flujo magnético constante en cada columna y a su vez, creando una corriente eléctrica constante y simétrica en las terminales X1 , X2 y X3, donde una fase de salida se encuentra en las terminales X1 y X0H0, una segunda fase se encuentra entre X2 y XOHO, y una tercera fase se encuentra entre las terminales X3 y XOHO. Figure 6 shows the front view of a Wescor type core for the 2 to 3 phase open star transformer (10) with the input connections where H1 is the terminal of one of the phases found in the column. left of the nucleus and H2 is the terminal of the second phase found in the right column. In the same core is the delta type arrangement where in each column of the core there is a winding, where X1' is the connection of the output of the winding of the first column with the input of the winding of the third column; in turn, X2' connects the input of the winding of the first column with the output of the winding of the second column; and X3' connects the input of the second winding with the output of the third winding. Each winding directly influences the 3 columns of the core, creating a constant magnetic flux in each column and, in turn, creating a constant and symmetrical electric current in the terminals X1, X2 and X3, where an output phase is connected. located at terminals X1 and X0H0, a second phase is located between X2 and XOHO, and a third phase is located between terminals X3 and XOHO.
En la figura 6 se encuentra esta misma conexión del Transformador de 2 a 3 fases estrella abierta (10) en un núcleo tipo columna. Figure 6 shows this same connection of the 2 to 3-phase open star transformer (10) in a column-type core.
Con esta invención, a partir de una entrada de 2 fases se pueden obtener 3 fases simétricas y con 120° de desfase entra cada una, lo cual provee una solución para alta, media o baja tensión que no se cuenta en la actualidad. Esta novedosa configuración no induce corrientes en el neutro y por tal motivo no requiere de una configuración de tierras compleja. Los valores de voltaje de la entrada bifásica pueden diferir de acuerdo a las necesidades y zona geográfica donde se instalen los transformadores, y en consecuencia los valores de voltaje de la salida trifásica también pueden diferir. With this invention, from a 2-phase input, 3 symmetrical phases can be obtained and each one enters with a 120° phase shift, which provides a solution for high, medium or low voltage that is not currently available. This novel configuration does not induce currents in the neutral and for this reason does not require a complex ground configuration. The voltage values of the two-phase input may differ according to the needs and geographical area where the transformers are installed, and consequently the voltage values of the three-phase output may also differ.

Claims

REIVINDICACIONES Un Transformador de 2 a 3 fases estrella abierta (10) que comprende un sistema de conexiones con una entrada bifásica y una salida trifásica simétrica, caracterizado porque dicho transformador cuenta con una conexión de entrada estrella abierta, una conexión delta y una conexión de salida tipo estrella, donde la configuración de entrada es de tipo estrella abierta donde H1 y H2 son las 2 líneas de fase de entrada con un desfase de 120° respecto a la terminal en común de tierra X0H0 es el tierra; la salida trifásica presenta una configuración de tipo estrella donde X1 , X2 y X3 son las salidas de cada fase con un desfase de 120° respecto a la terminal den común de tierra X0H0; donde la conversión de las 2 fases de entrada a las 3 fases de salida se genera en el mismo núcleo donde se encuentra el arreglo tipo delta o triángulo donde en cada columna del núcleo se encuentra un devanado, siendo X1 ’ la conexión de la salida del devanado de la primer columna con la entrada del devanado de la tercera columna; a su vez, X2’ conecta la entrada del devanado de la primer columna con la salida del devanado de la segunda columna; y X3’ conecta la entrada del segundo devanado con la salida del tercer devanado; cada devanado influye directamente en las 3 columnas del núcleo creando un flujo magnético constante en cada columna y a su vez, creando una corriente eléctrica constante y simétrica en las terminales X1 , X2 y X3, donde una fase de salida se encuentra entre las terminales X1 y X0H0, la segunda fase se encuentra entre X2 y X0H0, y la tercera fase se encuentra entre las terminales X3 y X0H0, donde los valores de voltaje de la entrada bifásica pueden diferir de acuerdo a las necesidades y zona geográfica donde se instalen los transformadores y en consecuencia los valores de voltaje de la salida trifásica también pueden diferir. El Transformador de 2 a 3 fases estrella abierta (10), tal como lo reclamado en la reivindicación 1 , caracterizado porque dicho transformador puede presentar los devanados en núcleos de tipo Wescor o tipo columna o bien algún otro tipo de configuración. CLAIMS A 2 to 3-phase open star transformer (10) that comprises a connection system with a two-phase input and a symmetrical three-phase output, characterized in that said transformer has an open star input connection, a delta connection and an output connection. star type, where the input configuration is open star type where H1 and H2 are the 2 input phase lines with a phase shift of 120° with respect to the common ground terminal X0H0 is the ground; The three-phase output has a star-type configuration where X1, X2 and X3 are the outputs of each phase with a 120° phase shift with respect to the common ground terminal X0H0; where the conversion of the 2 input phases to the 3 output phases is generated in the same core where the delta or triangle type arrangement is located where in each column of the core there is a winding, X1 ' being the connection of the output of the winding of the first column with the input of the winding of the third column; In turn, X2' connects the input of the winding of the first column with the output of the winding of the second column; and X3' connects the input of the second winding with the output of the third winding; Each winding directly influences the 3 columns of the core, creating a constant magnetic flux in each column and, in turn, creating a constant and symmetrical electric current in the terminals X1, X2 and X3, where an output phase is located between the terminals X1 and X0H0, the second phase is between X2 and X0H0, and the third phase is located between terminals consequently the voltage values of the three-phase output may also differ. The 2 to 3 phase open star transformer (10), as claimed in claim 1, characterized in that said transformer can have the windings in Wescor type or column type cores or some other type of configuration.
PCT/MX2022/050090 2022-07-07 2022-10-10 2- to 3-phase open star transformer WO2024010440A1 (en)

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MX2022008497 2022-07-07

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1887588A1 (en) * 2005-05-23 2008-02-13 Vincente Arturo Mendoza Ceballos Prism-type electrical converter for the generation, transmission, distribution and supply of electric current, and production method thereof
WO2010086793A1 (en) * 2009-01-29 2010-08-05 Codensa S.A. Esp Winding connection to supply three-phase power from a two-phase feeding and 2x3 distribution transformer
US20150077207A1 (en) * 2012-04-06 2015-03-19 Hispano-Suiza Three-phase-two-phase stationary transformer with forced linked flux
CN204424899U (en) * 2014-12-02 2015-06-24 国网河南伊川县供电公司 A kind ofly to increase for electric power, subtract mutually antitheft electrical power trans mission/distribution system subtract phase transformer
KR101565392B1 (en) * 2014-12-19 2015-11-04 주식회사 신동파워텍 Three-phase transformer using two-phase
CN210444020U (en) * 2019-11-08 2020-05-01 西南交通大学 Single-phase or two-phase-to-three-phase power supply structure using YNVd transformer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1887588A1 (en) * 2005-05-23 2008-02-13 Vincente Arturo Mendoza Ceballos Prism-type electrical converter for the generation, transmission, distribution and supply of electric current, and production method thereof
WO2010086793A1 (en) * 2009-01-29 2010-08-05 Codensa S.A. Esp Winding connection to supply three-phase power from a two-phase feeding and 2x3 distribution transformer
US20150077207A1 (en) * 2012-04-06 2015-03-19 Hispano-Suiza Three-phase-two-phase stationary transformer with forced linked flux
CN204424899U (en) * 2014-12-02 2015-06-24 国网河南伊川县供电公司 A kind ofly to increase for electric power, subtract mutually antitheft electrical power trans mission/distribution system subtract phase transformer
KR101565392B1 (en) * 2014-12-19 2015-11-04 주식회사 신동파워텍 Three-phase transformer using two-phase
CN210444020U (en) * 2019-11-08 2020-05-01 西南交通大学 Single-phase or two-phase-to-three-phase power supply structure using YNVd transformer

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