Browsing by Author "Goetz, Stefan"
Now showing items 1-12 of 12
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A Generic Scheduling Algorithm for Low-Frequency Switching in Modular Multilevel Converters with Parallel Functionality
Since the introduction of modular multilevel converters (MMC), various additional features have been introduced for MMCs, among them parallel inter-module connectivity. However, such a parallel mode requires appropriate ... -
A high-frequency pulsating dc link for electric vehicle drives with reduced losses
This paper proposes a motor drive suitable for electric vehicles (EVs) with notably reduced losses as compared to conventional drives. The proposed drive feeds the dc-link with a dynamically reconfigurable battery formed ... -
Advances in Transcranial Magnetic Stimulation Technology
(2015-06-05)© 2015 by Wiley-Blackwell. All rights reserved. This chapter provides overview of the state of the art of transcranial magnetic stimulation (TMS) devices, including pulse sources with flexible control of the output waveform ... -
Ageing Mitigation and Loss Control in Reconfigurable Batteries in Series-Level Setups
(2022)This paper presents a novel control method that reduces the low-frequency ripple of dynamical-ly reconfigurable battery technology to reduce cell ageing and loss. It furthermore shifts the residual ripple to higher frequencies ... -
Low-Cost Parameter Estimation Approach for Modular Converters and Reconfigurable Battery Systems Using Dual Kalman Filter
Modular converters or reconfigurable battery energy storage systems are a promising approach to eliminate the dependence on the weakest element in previously hard-wired battery packs and to combine heterogeneous batteries ... -
Modular Power Electronics System for Charging an Electrically Operated Vehicle
A power electronics system for charging at least one elec trically operated vehicle , wherein the power electronics system has at least two modules each having at least one terminal pair with DC output , at least one rectifier ... -
Novel low-side/high-side gate drive and supply with minimum footprint, high power density, and low cost for silicon and wide-bandgap transistors
High-power silicon field-effect transistors as well as IGBTs and particularly wide-bandgap semi¬conductor transistors typically need negative turn-off voltage for a secure off-state, resilience to spurious turn on, and rapid ... -
Systems and Devices for Quiet Transcranial Magnetic Stimulaton and Method of Using Same
This invention discloses a magnetic stimulation coil (300) for magnetic stimulation in the brain and the peripheral nervous system with reduced sound emissions and a method for manufacturing such stimulation coil. The stimulation ...
