Title :
Comparison between hexa- and conventional E-type core three-phase transformers
Author :
Lundmark, Sonja ; Serdyuk, Yuriy V. ; Gubanski, Stanislaw M. ; Lärking, Benny
Author_Institution :
Dept. of Energy & Environ., Chalmers Univ. of Technol., Gothenburg
Abstract :
The concept of power transformer design with a symmetric core construction (the hexa-transformer) provides a more compact solution compared to traditional technology based on an E-type core. This paper evaluates parameters of two 100 kVA three-phase transformers built according to both concepts. The evaluation includes calculations of induced voltages, inductances, core losses and weight differences. Further, the calculated parameters are compared with measured values. It is shown that, for the investigated transformer size and ratings, the compact design of the hexa-transformer yields up to 25% lower core losses, 40% smaller magnetization current and 12% lower core weight compared to the conventional E-core transformer.
Keywords :
power transformers; transformer cores; apparent power 100 kVA; conventional E-type core three-phase transformers; hexa-type core three-phase transformers; power transformer; symmetric core construction; Building materials; Core loss; Leg; Magnetic cores; Magnetic materials; Paper technology; Permeability; Phase transformers; Power transformers; Transformer cores;
Conference_Titel :
Electrical Machines, 2008. ICEM 2008. 18th International Conference on
Conference_Location :
Vilamoura
Print_ISBN :
978-1-4244-1735-3
Electronic_ISBN :
978-1-4244-1736-0
DOI :
10.1109/ICELMACH.2008.4799835