Gero Schmidt

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Due to the availability of efficient three-phase inverters, Permanent Magnet Synchronous Motors (PMSM) have become an interesting drive concept for numerous applications. However, for efficient and smooth operation, the inverter input switching signals have to be modulated in a suitable way in order to obtain an appropriate commutation sequence for(More)
A new power train topology for vehicles with electrical machines is introduced, including a photovoltaic energy source, to realize a range extender based vehicle. A new direct energy conversion scheme is applied, being combinable with conventional setups like hybrids, electrical vehicles or already established range extenders and independent of the type of(More)
Big data systems can be used to facilitate powerful medical image analysis at scale. Understanding their behaviors in this context can lead to many benefits, ranging from superior infrastructure configurations to optimized parallel algorithm implementations. This paper is, to our knowledge, a first step towards developing such an understanding for(More)
A single chip digital radio frequency memory (DRFM) modulator provides time delay, Doppler shifting, and phase/amplitude modulation of RF signals. The digital IC has been implemented in Vitesse Semiconductor's H-GaAs III technology for operation up to 500 MHz, and was designed with COMPASS Design Automation's CAE tools and SPEC's standard cell libraries.
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