High-frequency power supply units are used in almost every electronic device such as television sets, computers and monitors. In conventional devices, three to six per cent of the power supplied is lost in coils and transformers.
Researchers develop and optimise electricity-saving high frequency litz wires.
© Universität Erlangen
The new BINE Projektinfo brochure “Increased efficiency for power supplies” (12/2013) presents optimised high frequency litz wires and windings with a higher degree of efficiency. Given the proliferation of electronic devices among consumers, every small advancement of any single device adds up to significant energy savings.
High frequency litz wires are used in many electronic devices. They consist of many thin, intertwined conductors that are electrically insulated by varnish. Stranded wires suffer the lowest possible power losses when the numerous strands form a large as possible total surface area and care is taken when intertwining that each wire strand occupies every cross-sectional position equally often. The researchers systematically studied the influence of diameter and number of strands, stranding direction and cross-section for different frequency ranges. With this data, high frequency litz wires can be optimised for specific areas of application.
The amount of electricity saved in Germany due to optimised litz wires depends on many factors and can be estimated only roughly. Researchers assume that annual electricity savings in Germany would amount to 5o million kWh. This is equivalent to the electricity demand of 12,500 four-person households. The research project was conducted by the Friedrich-Alexander-Universität Erlangen-Nürnberg in cooperation with industry partners.
The BINE Projektinfo brochure, which can be obtained free of charge from the BINE Information Service at FIZ Karlsruhe, is available online at www.bine.info or by calling +49 (0)228 92379-0.Press contact
About FIZ KarlsruheFIZ Karlsruhe – Leibniz Institute for Information Infrastructure is a not-for-profit organization with the public mission to make sci-tech information from all over the world publicly available and to provide related services in order to support the national and international transfer of knowledge and the promotion of innovation.
FIZ Karlsruhe is a member of the Leibniz Association (WGL) which consists of 87 German research and infrastructure institutions.
Rüdiger Mack | idw
Squeezing every drop of fresh water from waste brine
30.05.2017 | University of California - Riverside
EU research project DEMETER strives for innovation in enzyme production technology
30.05.2017 | Deutsches Biomasseforschungszentrum
Scientists have developed a new method of characterizing graphene’s properties without applying disruptive electrical contacts, allowing them to investigate both the resistance and quantum capacitance of graphene and other two-dimensional materials. Researchers from the Swiss Nanoscience Institute and the University of Basel’s Department of Physics reported their findings in the journal Physical Review Applied.
Graphene consists of a single layer of carbon atoms. It is transparent, harder than diamond and stronger than steel, yet flexible, and a significantly better...
The world's highest gain high power laser amplifier - by many orders of magnitude - has been developed in research led at the University of Strathclyde.
The researchers demonstrated the feasibility of using plasma to amplify short laser pulses of picojoule-level energy up to 100 millijoules, which is a 'gain'...
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
30.05.2017 | Life Sciences
30.05.2017 | Life Sciences
30.05.2017 | Physics and Astronomy