Skip to main content
Ir a la página de inicio de la Comisión Europea (se abrirá en una nueva ventana)
español es
CORDIS - Resultados de investigaciones de la UE
CORDIS
Contenido archivado el 2022-12-27

ENERGY SAVING IN TRANSFORMER CORES

Objetivo

To design and construct a 200 KVA energy efficient 3-phase, 3 limb transformer cores, and to incorporate new features in its design which will prove beneficial in energy saving.
Work has been completed on the assessment of the various methods of assembling magnetic cores in order to choose a transformer design which will make the best use of core material magnetic properties (most present commercial designs cause a high building factor which creates extra core losses in a transformer and hence does not make the best use of the ecellent basic magnetic properties of core materials).
During this period the final design of a novel 200 KVA core has been finalised.
Investigations and discussions with designers at the South Wales Transformers Ltd led to the conclusion that a notched yoke, 3-limb transformer of 200 KVA rating should be assembled at the Wolfsen Centre, prior to final coil winding etc. at the transformer plant. Before final assembly the optimum stagger length should be confirmed by preliminary measurement of losses and magnetising current in the transformer/using temporary windings.
Laminations were staggered layer by layer in one core in order todemonstrate the benefit of the technique on core efficiency : optimum conditions were obtained with a stagger length of 1.0 cm with 15 cm/laminations./wide. Core loss was reduced by 5-10%. Other laminations were cut at angles to the rolling direction and re-assembled in order to demonstrate benefits which may be obtained using this technique.
The transformer design for the demonstration had a core weight of 315 Kg. The guaranteed loss of the manufacturer's conventionally designed equivalent transformer was 330 W. The new design produced a loss of 230 W (a capitalised loss saving of around 300 UKL for the 200 KVA transformer).
Core laminations have been cut from laser scribed high permeability grain oriented silicon iron. The laminations were cut from a mother coil 0.23 mm thick, from which strips for Epstein and single strip testing were also cut. The power loss and magnetic induction of the Epstein strips over a range of flux densities from 1.7T to 1.8T have been measured.
With all basic magnetic measurements on core starte steel completed, final testing of the 200 KVA core at the end of March 1986. Testing of various packets of the core separately with different stagger lengths was performed before sending the assembly to South Wales Transformers for the completion of assembly and acceptance testing.
The completed transformer was tested and installed on site of a user. The transformer has been operating satisfactorily at its low rating.
This is a 3 phase project for the design and construction of an energy efficient 200 KVA transformer. In phase 1, cut-laminations were purchased for assembly in new core configurations. The work in this phase focused on assembly design. Two improvements are proposed:
(1) staggering layers of laminations in a core, and,
(2) cutting laminations at small angles to the rolling direction of the sheet before assembly.
During phase 2, the proposed improvements in the new core will be evaluated. Arrays of thermistors are installed on the laminations in order to monitor the variation of localised loss with stagger length. Variations in the grade of steel used in the yoke and limb laminations will also be tested. Once a final design is developed based on phase 2 test results, phase 3 - the installation of the newly designed core in a working transformer site - will commence. The project is now in the final stage of phase 2.

Ámbito científico (EuroSciVoc)

CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural. Véas: El vocabulario científico europeo..

Este proyecto aún no se ha clasificado con EuroSciVoc.
Sugiera los ámbitos científicos que considere más relevantes y ayúdenos a mejorar nuestro servicio de clasificación.

Para utilizar esta función, debe iniciar sesión o registrarse

Programa(s)

Programas de financiación plurianuales que definen las prioridades de la UE en materia de investigación e innovación.

Tema(s)

Las convocatorias de propuestas se dividen en temas. Un tema define una materia o área específica para la que los solicitantes pueden presentar propuestas. La descripción de un tema comprende su alcance específico y la repercusión prevista del proyecto financiado.

Convocatoria de propuestas

Procedimiento para invitar a los solicitantes a presentar propuestas de proyectos con el objetivo de obtener financiación de la UE.

Datos no disponibles

Régimen de financiación

Régimen de financiación (o «Tipo de acción») dentro de un programa con características comunes. Especifica: el alcance de lo que se financia; el porcentaje de reembolso; los criterios específicos de evaluación para optar a la financiación; y el uso de formas simplificadas de costes como los importes a tanto alzado.

DEM - Demonstration contracts

Coordinador

UNIVERSITY OF WALES COLLEGE OF CARDIFF
Aportación de la UE
Sin datos
Dirección
WOLFSON CENTRE FOR MAGNETICS TECHNOLOGY THE PARADE 30 ROATH
CF2 3AD CARDIFF
Reino Unido

Ver en el mapa

Coste total

Los costes totales en que ha incurrido esta organización para participar en el proyecto, incluidos los costes directos e indirectos. Este importe es un subconjunto del presupuesto total del proyecto.

Sin datos