@inproceedings{Seliger2024, author = {Seliger, Norbert}, title = {Reconfigurable Polygonal Planar Inductor with Bistable Snapping Mechanism}, series = {2024 IEEE Open Conference of Electrical, Electronic and Information Sciences (eStream), Vilnius, Lithuania}, booktitle = {2024 IEEE Open Conference of Electrical, Electronic and Information Sciences (eStream), Vilnius, Lithuania}, isbn = {979-8-3503-5241-2}, issn = {2690-8506}, doi = {10.1109/eStream61684.2024.10542595}, pages = {1 -- 6}, year = {2024}, abstract = {A mechanically tunable planar single-turn inductor in air is proposed. The bistable flexible deflection of axially compressed wire segments is used for variation of the loop area of regular polygonal loop inductors. We present analytical expressions for the loop inductance and confirm the theoretical findings by magneto-quasi-static field simulation on exemplary polygonal circuits.}, language = {en} } @inproceedings{SeligerHelmbrecht2024, author = {Seliger, Norbert and Helmbrecht, Cordula}, title = {A high-frequency performance and degradation study of adhesive conductive EMI shielding tapes during High-Temperature Storage}, series = {Proccedings CIPS 2024 - 13th International Conference on Integrated Power Electronics Systems}, booktitle = {Proccedings CIPS 2024 - 13th International Conference on Integrated Power Electronics Systems}, publisher = {VDE VERLAG GMBH}, address = {D{\"u}sseldorf}, isbn = {978-3-8007-6288-0}, issn = {0341-3934}, pages = {297 -- 303}, year = {2024}, abstract = {The variation of the contact impedance of adhesive conductive EMI shielding tapes under high temperature storage (HTS) of 110degC is investigated. The adhesive tapes under test are implemented as signal return paths in microstrip lines. Changes in the ground plane impedance by adhesive deterioration are analyzed by S-parameter measurements from 1MHz to 3GHz. A circuit model for contact impedance degradation is proposed and applied in simulation of board level shielding. Contact resistance and contact capacitance are found to increase significantly after 2400h, causing a declined magnetic field shielding effectiveness by 30 dB below 500 MHz.}, language = {en} } @inproceedings{SeligerHonsa2023, author = {Seliger, Norbert and Honsa, Johannes}, title = {Time-variable Mutual Inductance for Enhanced Inductive Power Transmission}, series = {Proceedings International Symposium on Fundamentals of Electrical Engineering 2023 (ISFEE 2023)}, booktitle = {Proceedings International Symposium on Fundamentals of Electrical Engineering 2023 (ISFEE 2023)}, publisher = {IEEE}, address = {Bucharest, Romania}, isbn = {tbd}, pages = {5}, year = {2023}, abstract = {Enhanced inductive power transmission (IPT) between coaxially arranged circular coils is introduced by time-modulation of the mutual inductance. This modulation is accomplished by coherent switching of the short circuit current induced in a third loop. An analytical circuit model supporting the design for future time-modulated IPT systems is derived. We demonstrate an increase in load rms-voltage by 13\% (28\% gain in power) compared to an unmodulated transfer on an experimental system operating at fundamental frequencies ranging from 40kHz to 500kHz.}, language = {en} } @inproceedings{SeligerHonsa2023, author = {Seliger, Norbert and Honsa, Johannes}, title = {A Planar Magneto-Inductive Device with Modulated Mutual Inductance for Wireless Power Transmission}, series = {2023 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)}, booktitle = {2023 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)}, publisher = {IEEE}, address = {Venice (Italy)}, isbn = {979-8-3503-2060-2}, issn = {2766-287X}, doi = {10.1109/APWC57320.2023.10297488}, pages = {26 -- 31}, year = {2023}, abstract = {A Magneto-Inductive Wave (MIW) structure for wireless power transfer (WPT) is proposed with switchable mutual inductance between neighbored coupling coils. Orthogonally placed switchable short circuit loops are added in order to modulate the wave propagation properties of the MIW structure without changing the resonance frequency. We derive an analytical model based on lumped circuit analysis for the MIW waveguide and successfully evaluate the theoretical findings by circuit modeling and field simulation. We demonstrate switchable, i.e. addressable, guided wireless power transfer along an experimental MIW structure at a resonance frequency of 20.5 MHz.}, language = {en} } @inproceedings{SeligerFaltlhauser2023, author = {Seliger, Norbert and Faltlhauser, Georg}, title = {Progressive Expansion Sampling of Quasi-Static Magnetic Fields for EMI Noise Detection and Equivalent Source Modeling}, series = {Proceedings EMC Europe 2023}, booktitle = {Proceedings EMC Europe 2023}, publisher = {IEEE}, address = {Krakov}, pages = {6}, year = {2023}, abstract = {We introduce a quick and accurate quasi-static magnetic field scanning technique by employing a progressive sampling method in an unconfined input space. The proposed machine learning algorithm is tested against uniform sampling on a printed circuit board test structure. We prove allocation of multiple, separated regions with predefined tangential field strengths at MHz frequencies. The feasibility of equivalent magnetic dipole source modeling based on a small number of samples is demonstrated. Compared to uniform testing, progressive expansion sampling detects contours of given field limits in less than 3\% of the reference measurement time.}, language = {en} } @inproceedings{FuerboeckThalhammerLitzenbergeretal.1999, author = {F{\"u}rb{\"o}ck, C. and Thalhammer, R. and Litzenberger, M. and Seliger, Norbert and Pogany, D. and Gornik, E. and Wachutka, G.}, title = {Internal Characterisation of IGBTs Using the Backside Laserprober Technique}, series = {Jahrestagung der GMe, Bad Hofgastein Tagungsband 1999}, booktitle = {Jahrestagung der GMe, Bad Hofgastein Tagungsband 1999}, publisher = {Gesellschaft f{\"u}r Mikroelektronik (GMe)}, isbn = {3-901678-04-8}, year = {1999}, language = {en} } @inproceedings{RacklesSeliger2003, author = {Rackles, J. and Seliger, Norbert}, title = {Optimization of DC-Link Capacitors in an Integrated Starter Generator Unit}, series = {The New Automotive 42V Power Net}, booktitle = {The New Automotive 42V Power Net}, editor = {Graf, A.}, publisher = {expert verlag}, isbn = {978-3-8169-1992-6}, year = {2003}, language = {en} } @inproceedings{SeligerRacklesSchwarzbaueretal.2002, author = {Seliger, Norbert and Rackles, J. and Schwarzbauer, H. and Kiffe, W. and Bolz, S.}, title = {Compact and robust power electronics packaging and interconnection technology for an Integrated Starter Generator}, series = {Optimization of the Power Train in Vehicles by Using the Integrated Starter Generator (ISG)}, booktitle = {Optimization of the Power Train in Vehicles by Using the Integrated Starter Generator (ISG)}, publisher = {expert verlag GmbH}, isbn = {9783816920779}, pages = {248 -- 255}, year = {2002}, language = {en} } @inproceedings{GerberFerreiraHofsajeretal.2003, author = {Gerber, M. and Ferreira, J.A. and Hofsajer, I.W. and Seliger, Norbert}, title = {High temperature, high power density packaging for automotive applications}, series = {IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.}, booktitle = {IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.}, publisher = {IEEE}, doi = {10.1109/PESC.2003.1218329}, pages = {425 -- 430}, year = {2003}, abstract = {The automotive industry is pushing power electronic packaging to higher operating and heatsink temperatures while still requiring very high power densities due to limited space. Currently, the power electronics that is implemented within the engine compartment of the vehicle must operate with heatsink temperatures of approximately 85/spl deg/C and this temperature can be expected to increase to 125/spl deg/C in the near future. The high temperature operation of the power electronic structure is fundamentally limited by the employed materials maximum temperatures. A packaging concept is introduced that describes a structure realisation that enables the materials to operate at high ambient temperatures without exceeding their individual maximum temperatures. This in turn allows the complete power electronic structure to operate at a higher system temperature. In this paper, the packaging concept that can be used to meet these difficult requirements of high temperature and high power-density is introduced, discussed and implemented. Two case studies are considered and implemented to illustrate the packaging concept.}, language = {en} } @inproceedings{SeligerRacklesSchwarzbaueretal.2002, author = {Seliger, Norbert and Rackles, J. and Schwarzbauer, H. and Wolfgang, E. and Bolz, S.}, title = {Kompakte und hochzuverlaessige Aufbau- und Verbindungstechnik fuer leistungselektronische Systeme am Beispiel Starter Generator}, series = {Proceedings ECT 2002: Electronics and communications in traffic systems.}, booktitle = {Proceedings ECT 2002: Electronics and communications in traffic systems.}, editor = {Peier, D. and Hirsch, H.}, publisher = {MESAGO Messe- und Kongress-GmbH}, address = {Stuttgart (Germany)}, isbn = {3-7785-2885-8}, pages = {120 -- 128}, year = {2002}, abstract = {A compact and high-reliable converter design for an Integrated Starter Generator is presented. The concept is based on integration of the power switches with both the cooling system and the DC link capacitor, which optimizes the thermal management and minimizes inductive and conductive losses. The materials and joining technologies are selected in such a way that the converter can be operated up to 125 C ambient temperature. Therefore, the water cooling system of the combustion engine can directly be used. The paper further reports on circuit simulation results verifying the converter design and on first electrical measurements obtained on a functional prototype operating under normal load conditions (6kW rated power).}, language = {de} } @inproceedings{GerberFerreiraHofsajeretal.2002, author = {Gerber, M. and Ferreira, J.A. and Hofsajer, I.W. and Seliger, Norbert}, title = {A very high density, heatsink mounted inductor for automotive applications}, series = {Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)}, booktitle = {Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)}, publisher = {IEEE}, doi = {10.1109/IAS.2002.1042672}, pages = {948 -- 954}, year = {2002}, language = {en} } @inproceedings{GerberFerreiraHofsajeretal.2001, author = {Gerber, M. and Ferreira, J.A. and Hofsajer, I.W. and Seliger, Norbert}, title = {A volumetric optimization of a low pass filter}, series = {Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248)}, booktitle = {Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248)}, publisher = {IEEE}, doi = {10.1109/IAS.2001.955934}, pages = {2224 -- 2231}, year = {2001}, language = {en} } @inproceedings{HirschRoehrichSeliger2004, author = {Hirsch, H. and R{\"o}hrich, A. and Seliger, Norbert}, title = {EMV-optimierter Entwurf durch gezielte Reduktion von Oberfl{\"a}chenstr{\"o}men}, series = {12. Internationale Fachmesse und Kongress f{\"u}r Elektromagnetische Vertr{\"a}glichkeit}, booktitle = {12. Internationale Fachmesse und Kongress f{\"u}r Elektromagnetische Vertr{\"a}glichkeit}, publisher = {VDE-Verlag GmbH}, address = {D{\"u}sseldorf}, isbn = {3-8007-2810-9}, pages = {689 -- 696}, year = {2004}, language = {de} } @inproceedings{GerberFerreiraHofsajeretal.2002, author = {Gerber, M. and Ferreira, J.A. and Hofsajer, I.W. and Seliger, Norbert}, title = {A high power density DC/DC converter for automotive applications}, series = {SAUPEC 2002 Proceedings of the Eleventh Southern African Universities Power Engineering Conference}, booktitle = {SAUPEC 2002 Proceedings of the Eleventh Southern African Universities Power Engineering Conference}, publisher = {IEEE}, pages = {6}, year = {2002}, language = {en} } @inproceedings{RoehrichHirschSeliger2002, author = {R{\"o}hrich, A. and Hirsch, H. and Seliger, Norbert}, title = {Built-in EMC in der Aufbau- und Verbindungstechnik am Beispiel des integrierten Startergenerators}, series = {Proceedings Electronic \& Communications in Traffic Systems (ECT'02)}, booktitle = {Proceedings Electronic \& Communications in Traffic Systems (ECT'02)}, year = {2002}, language = {de} } @inproceedings{RoehrichHirschSeliger2002, author = {R{\"o}hrich, A. and Hirsch, H. and Seliger, Norbert}, title = {EMC modeling of a compact packaging technology of a crankshaft starter generator}, series = {International Conference of Electromagnetic Compatibility (ICEMC 2002)}, booktitle = {International Conference of Electromagnetic Compatibility (ICEMC 2002)}, year = {2002}, language = {en} } @inproceedings{WolfgangLefrancSeligeretal.2002, author = {Wolfgang, E. and Lefranc, G. and Seliger, Norbert and Berg, H. and Licht, T.}, title = {Zuverl{\"a}ssige Leistungselektronik f{\"u}r die Automobiltechnik}, series = {ETG-Tagung Bauelemente der Leistungselektronik und ihre Anwendungen}, booktitle = {ETG-Tagung Bauelemente der Leistungselektronik und ihre Anwendungen}, publisher = {ETG}, address = {Bad Nauheim}, year = {2002}, language = {de} } @article{GerberFerreiraHofsajeretal.2004, author = {Gerber, M. and Ferreira, J.A. and Hofsajer, I.W. and Seliger, Norbert}, title = {A high-density heat-sink-mounted inductor for automotive applications}, series = {IEEE Transactions on Industry Applications}, volume = {40}, journal = {IEEE Transactions on Industry Applications}, number = {4}, publisher = {IEEE}, pages = {1031 -- 1038}, year = {2004}, language = {en} } @inproceedings{GerberFerreiraHofsajeretal.2004, author = {Gerber, M. and Ferreira, J.A. and Hofsajer, I.W. and Seliger, Norbert}, title = {An improved 3D integrated DC/DC converter for high temperature environments}, series = {IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551)}, booktitle = {IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551)}, publisher = {IEEE}, pages = {2779 -- 2785}, year = {2004}, language = {en} } @inproceedings{RoehrichHirschSeliger2004, author = {R{\"o}hrich, A. and Hirsch, H. and Seliger, Norbert}, title = {EMC-optimised design of a converter power stage by reduction of surface currents}, series = {IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551)}, booktitle = {IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551)}, publisher = {IEEE}, pages = {82 -- 85}, year = {2004}, language = {en} }