TY - CHAP A1 - Seliger, Norbert T1 - Reconfigurable Polygonal Planar Inductor with Bistable Snapping Mechanism T2 - 2024 IEEE Open Conference of Electrical, Electronic and Information Sciences (eStream), Vilnius, Lithuania N2 - 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. KW - Inductance KW - Inductors KW - Design methodology KW - Wires KW - Magnetic Analysis Y1 - 2024 SN - 979-8-3503-5241-2 U6 - https://doi.org/10.1109/eStream61684.2024.10542595 SN - 2690-8506 SP - 1 EP - 6 ER - TY - CHAP A1 - Seliger, Norbert A1 - Helmbrecht, Cordula T1 - A high-frequency performance and degradation study of adhesive conductive EMI shielding tapes during High-Temperature Storage T2 - Proccedings CIPS 2024 - 13th International Conference on Integrated Power Electronics Systems N2 - 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. KW - EMI KW - Shielding tape KW - High-Temperature Storage KW - adhesive conductive EMI shielding tape Y1 - 2024 SN - 978-3-8007-6288-0 SN - 0341-3934 SP - 297 EP - 303 PB - VDE VERLAG GMBH CY - Düsseldorf ER - TY - CHAP A1 - Seliger, Norbert A1 - Honsa, Johannes T1 - Time-variable Mutual Inductance for Enhanced Inductive Power Transmission T2 - Proceedings International Symposium on Fundamentals of Electrical Engineering 2023 (ISFEE 2023) N2 - 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. KW - Mutual Inductance KW - Inductive Power Transmission KW - Time-variable Inductance Y1 - 2023 SN - tbd PB - IEEE CY - Bucharest, Romania ER - TY - CHAP A1 - Seliger, Norbert A1 - Honsa, Johannes T1 - A Planar Magneto-Inductive Device with Modulated Mutual Inductance for Wireless Power Transmission T2 - 2023 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) N2 - 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. KW - Magneto-Inductive Device, Wireless Power Transmission, Mutual Inductance Y1 - 2023 SN - 979-8-3503-2060-2 U6 - https://doi.org/10.1109/APWC57320.2023.10297488 SN - 2766-287X SP - 26 EP - 31 PB - IEEE CY - Venice (Italy) ER - TY - CHAP A1 - Seliger, Norbert A1 - Faltlhauser, Georg T1 - Progressive Expansion Sampling of Quasi-Static Magnetic Fields for EMI Noise Detection and Equivalent Source Modeling T2 - Proceedings EMC Europe 2023 N2 - 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. KW - magnetic near field KW - Gaussian process classifier KW - EMI Y1 - 2023 PB - IEEE CY - Krakov ER - TY - CHAP A1 - Fürböck, C. A1 - Thalhammer, R. A1 - Litzenberger, M. A1 - Seliger, Norbert A1 - Pogany, D. A1 - Gornik, E. A1 - Wachutka, G. T1 - Internal Characterisation of IGBTs Using the Backside Laserprober Technique T2 - Jahrestagung der GMe, Bad Hofgastein Tagungsband 1999 KW - IGBT Y1 - 1999 SN - 3-901678-04-8 PB - Gesellschaft für Mikroelektronik (GMe) ER - TY - CHAP A1 - Rackles, J. A1 - Seliger, Norbert ED - Graf, A. T1 - Optimization of DC-Link Capacitors in an Integrated Starter Generator Unit T2 - The New Automotive 42V Power Net KW - capacitor Y1 - 2003 SN - 978-3-8169-1992-6 PB - expert verlag ER - TY - CHAP A1 - Seliger, Norbert A1 - Rackles, J. A1 - Schwarzbauer, H. A1 - Kiffe, W. A1 - Bolz, S. T1 - Compact and robust power electronics packaging and interconnection technology for an Integrated Starter Generator T2 - Optimization of the Power Train in Vehicles by Using the Integrated Starter Generator (ISG) KW - power electronics packaging Y1 - 2002 SN - 9783816920779 SP - 248 EP - 255 PB - expert verlag GmbH ER - TY - CHAP A1 - Gerber, M. A1 - Ferreira, J.A. A1 - Hofsajer, I.W. A1 - Seliger, Norbert T1 - High temperature, high power density packaging for automotive applications T2 - IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03. N2 - 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. KW - high temperature electronic packaging Y1 - 2003 U6 - https://doi.org/10.1109/PESC.2003.1218329 SP - 425 EP - 430 PB - IEEE ER - TY - CHAP A1 - Seliger, Norbert A1 - Rackles, J. A1 - Schwarzbauer, H. A1 - Wolfgang, E. A1 - Bolz, S. ED - Peier, D. ED - Hirsch, H. T1 - Kompakte und hochzuverlaessige Aufbau- und Verbindungstechnik fuer leistungselektronische Systeme am Beispiel Starter Generator T2 - Proceedings ECT 2002: Electronics and communications in traffic systems. N2 - 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). KW - DC/DC converter Y1 - 2002 SN - 3-7785-2885-8 SP - 120 EP - 128 PB - MESAGO Messe- und Kongress-GmbH CY - Stuttgart (Germany) ER -