Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Bisogno, F.E. Radecker, M. Knoll, A. Carazo, A.V. Riedlhammer, A. Deboy, G. Norvez, N. Pacas, J.M. |
| Copyright Year | 2004 |
| Description | Author affiliation: Fraunhofer-Inst. fur Autonome Inteligent Syst., Germany (Bisogno, F.E.; Radecker, M.; Knoll, A.) |
| Abstract | A 1 to 5 Watts wide-range power supply demonstrator with a transoner-type piezoelectric transformer (PT) has been built in class E topology to show the full functionality of an off-line power supply. A basic design target was the ZVS or near-ZVS behaviour, which was achieved for 3 Watts and 6 V output at input voltages between 85 and 260 V AC, and for 5 Watts and 6 V output at Vin = 150 to 260 V AC, respectively, using one and the same PT sample. The PT was 2.3 mm thick, and had a diameter of 17 mm. The used fieldstop-IGBT 1 A-type shows losses less than 700 mW over the full operating range for constant output voltage optimization, and less than 250 mW, for maximum efficiency optimization, respectively, at frequencies of 155 to 172 kHz. The measured overall worst case efficiency of the converter (without rectifiers) has been accordingly 70.5%, and 82.4%, respectively. The application is suited for smart-card format power supplies below 5 mm thickness. Compared to the half-bridge, the class E concept, as a current fed topology, promises better EMI suppression by the input inductor than a half-bridge, lower switch current peaks, and a larger control bandwidth at the same frequency. Further, it was demonstrated with the class E concept, that it is possible to keep the output voltage constant, using the resonant tank with the output capacitance. Thus, output charging capacitors can be made very small, compared to fly-back converters or other hard-switching conventional topologies. The measurements had been in good agreement with the differential equations analysis and the SPICE simulation, as well. These results led to current projects for mass market applications using the class E topology, and alternatively the half-bridge for higher power levels. |
| Sponsorship | IEEE Power Electon. Soc |
| Starting Page | 2662 |
| Ending Page | 2667 |
| File Size | 346245 |
| Page Count | 6 |
| File Format | |
| ISBN | 0780383990 |
| ISSN | 02759306 |
| DOI | 10.1109/PESC.2004.1355252 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-06-20 |
| Publisher Place | Germany |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Resonance Topology Transformers Power supplies Frequency Switches Zero voltage switching Rectifiers Electromagnetic interference Inductors |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|