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The presented paper evaluates measurement results and reports about further development from the vehicle to grid system presented in [1] and [12]. It uses a number of mass-production electric vehicles in sink and source mode to balance the load of an industrial plant by cutting off its peak loads. The actual load is detected and the balancing power is calculated by a predictive algorithm which keeps...
A SAR system has to be calibrated for quantitative measurement. During this process all essential parameters of a SAR image are linked to their geophysical quantity. This includes the location of the image pixel, its backscattering characteristics (in amplitude and in phase) and polarimetric information. The Microwave and Radar Institute of the DLR has gained a lot of experience in these calibration...
One of the most important requirements for grid-connected inverters is an accurate control of the line currents. Applying the “switched diamond hysteresis control (SDHC)” to multilevel inverters combines the advantages of both techniques and is an enabling step towards a better inverter performance than using state of the art controllers. The hypotheses are further investigated in a real hardware...
The combination of “electric mobility” and “renewable energy production” heavily demands for energy storage systems. Investigations of technical possibilities to use the stored energy of electric vehicles (EV) and so called plug-in hybrid electric vehicles (PHEVs) for smoothing the grid load and reduce power peaks are inalienable. Within the limits given by the car's battery management system consumption-driven...
The technological advancement of the synthetic aperture radar (SAR) principle leads to an innovative challenge for the calibration as well. In order to provide an active reference target for an accurate absolute radiometric calibration the knowledge of the target's backscattering characteristics is essential. For the recently developed DLR C-band transponder named “Kalibri” several strategies for...
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