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High Frequency Full Bridge Converter using Multilayer Coreless Printed Circuit Board Step-up Power Transformer
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (Power Electronics)ORCID iD: 0000-0002-8466-946X
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (Power Electronics)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (power Electronics)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (Power Electronics)ORCID iD: 0000-0001-5326-2563
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2011 (English)In: 2011 20th European Conference on Circuit Theory and Design, ECCTD 2011, IEEE conference proceedings, 2011, 805-808 p.Conference paper, Published paper (Refereed)
Abstract [en]

In designing switch mode power supply (SMPS), thedesirable feature is to have an efficient and compact design. Themain idea is to increase the switching frequency and reduce thebulky magnetic parts of the converter. This leads to a compactsize, less weight, reduced cost and increased power density of theconverter. This paper presents a high frequency full bridge DC toDC converter, using a multilayer coreless printed circuit board(PCB) step-up power transformer. The converter was simulatedand also implemented on the PCB. The pulse width modulated(PWM) signals were generated, using a microcontroller, to switchthe Metal oxide semiconductor field effect transistor (MOSFET).The design of the converter is tested up to the power levels of 5Watts with the switching frequency in 2 to 3MHz range. Theenergy efficiency of the converter is 74.86% at 2.4 MHz.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2011. 805-808 p.
Keyword [en]
Full bridge converter; MHz frequency region; Multi layer PCB transformer; Power MOSFET; Switch mode power supply
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:miun:diva-14583DOI: 10.1109/ECCTD.2011.6043837Scopus ID: 2-s2.0-80155123534Local ID: STCISBN: 978-145770618-9 (print)OAI: oai:DiVA.org:miun-14583DiVA: diva2:446219
Conference
2011 20th European Conference on Circuit Theory and Design, ECCTD 2011;Linkoping;29 August 2011through31 August 2011;Category numberCFP11ECC-ART;Code87118
Available from: 2011-10-06 Created: 2011-10-06 Last updated: 2016-10-19Bibliographically approved
In thesis
1. Analysis and implementation of switch mode power supplies in MHz frequency region
Open this publication in new window or tab >>Analysis and implementation of switch mode power supplies in MHz frequency region
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2012. 56 p.
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 80
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-16691 (URN)STC (Local ID)978-91-87103-13-1 (ISBN)STC (Archive number)STC (OAI)
Available from: 2012-08-08 Created: 2012-08-08 Last updated: 2016-10-20Bibliographically approved
2. Power electronics for resistance spot welding equipment
Open this publication in new window or tab >>Power electronics for resistance spot welding equipment
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Resistance spot welding is an inexpensive and efficient way ofjoining metals. It has extensive applications in household appliancesand in automotive industries. The traditional approach in relation tospot welding machines is to use 50 Hz welding transformers. Thedrawback associated with these transformers is that they are both heavyand bulky. Moreover, the fusing requirements become larger due toincreased welding power.With the development of high power semiconductor switches andDC-DC converter topologies, it is now possible to develop inverterdrive resistance spot welding equipment (RSE) which can be operatedat frequencies higher than the 50Hz frequency. The advantage of usinghigh frequencies is the reduction in the size of the transformer.Moreover, the fusing requirements are relaxed, as the power is sharedbetween three phases.In many industrial applications long welding arms are requiredbetween the transformer and the weld spot, which increases theinductance. The parasitic inductance in welding arms limits themaximum rate of change of the current. In order achieve a higher powerthe current has to be rectified. To rectify a current of the order of tenthof kA is challenging task and is one of the major sources of loss.The full bridge converter topology is used for the inverter drive RSE.The power switches used in the converter are IGBT. In RSE, the DClink capacitors are used to store high energy. In the case of circuitfailure, the stored energy can cause the IGBT device to rupture and inorder to avoid this, a protection scheme is discussed in this work.A controller circuit, using a DSPIC33FJ16GS502 controller, isdeveloped in order to drive a high frequency full bridge converter,which can also be used to drive the IGBTs in the RSE.The secondary side welding current is of the order of kilo amperes.A requirement for the welding control is that the current must be sensedprecisely and in order to fulfill this, a Hall sensor system has beendeveloped. This developed circuit is used in the feed-back control of theRSE. The presence of metallic objects and tools in the vicinity of theHall sensor system can affect its precision. We have estimated theivexclusion distance for the metal objects from the sensor by means of amodel developed in COMSOL Multiphysics software.

Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2012. 60 p.
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 79
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-16699 (URN)STC (Local ID)978-91-87103-12-4 (ISBN)STC (Archive number)STC (OAI)
Available from: 2012-08-10 Created: 2012-08-10 Last updated: 2016-10-20Bibliographically approved
3. Power electronics for - and modelling of - resistance welding equipment
Open this publication in new window or tab >>Power electronics for - and modelling of - resistance welding equipment
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2013. 134 p.
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 163
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-20947 (URN)STC (Local ID)978-91-87557-07-1 (ISBN)STC (Archive number)STC (OAI)
Supervisors
Available from: 2014-01-02 Created: 2014-01-02 Last updated: 2016-10-20Bibliographically approved
4. Analysis and EMI suppression of MHz frequency range switch mode power supplies
Open this publication in new window or tab >>Analysis and EMI suppression of MHz frequency range switch mode power supplies
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2013. 139 p.
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 164
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-21019 (URN)STC (Local ID)978-91-87557-08-8 (ISBN)STC (Archive number)STC (OAI)
Supervisors
Available from: 2014-01-13 Created: 2014-01-13 Last updated: 2016-10-20Bibliographically approved

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