Search Results - "Sauer, D. U"

Lifetime and Performance Assessment of Commercial Electric Double-Layer Capacitors Based on Cover Layer Formation by Teuber, M, Strautmann, M, Drillkens, J, Sauer, D. U

“…The lifetime and performance of energy storage systems are essential characteristics for a major success of clean energy innovations, especially regarding the…”
Get full text

Characterization of high-power lithium-ion batteries by electrochemical impedance spectroscopy. II: Modelling by Andre, D., Meiler, M., Steiner, K., Walz, H., Soczka-Guth, T., Sauer, D.U.

“…A common way to model lithium-ion batteries is to apply equivalent circuit (EC) models. In this work two different EC models are build up and parameterized for…”
Get full text

Characterization of high-power lithium-ion batteries by electrochemical impedance spectroscopy. I. Experimental investigation by Andre, D., Meiler, M., Steiner, K., Wimmer, Ch, Soczka-Guth, T., Sauer, D.U.

“…The influence of the operation conditions temperature and state of charge (SOC) on the performance of a commercial high-power lithium-ion cell is investigated…”
Get full text

Dynamic modeling of high temperature PEM fuel cell start-up process by WANG, Y, SAUER, D. U, KOEHNE, S, ERSOEZ, A

“…High temperature proton exchange membrane fuel cells (HT-PEMFCs) are considered to be the next generation fuel cells. Compared with standard low temperature…”
Get full text

Influence of relaxation time on the lifetime of commercial lithium-ion cells by Reichert, M., Andre, D., Rösmann, A., Janssen, P., Bremes, H.-G., Sauer, D.U., Passerini, S., Winter, M.

“…The influence of rest periods on the lifetime of lithium-ion cells is investigated. The investigations focus on commercially available cells (type 18650) with…”
Get full text

Harmonic analysis for identification of nonlinearities in impedance spectroscopy by Kiel, M., Bohlen, O., Sauer, D.U.

“…Though impedance is only defined for linear systems, impedance spectroscopy is also successfully applied to nonlinear systems such as fuel cells and batteries…”
Get full text

Impedance-based overcharging and gassing model for VRLA/AGM batteries by Thele, M., Karden, E., Surewaard, E., Sauer, D.U.

“…This paper presents for the first time an impedance-based non-linear model for lead-acid batteries that is applicable in all operational modes. An overcharging…”
Get full text

Hybrid modeling of lead–acid batteries in frequency and time domain by Thele, M., Buller, S., Sauer, D.U., De Doncker, R.W., Karden, E.

“…This paper presents an improved impedance-based non-linear simulation model for lead–acid batteries. The parameterization of impedance-based models is…”
Get full text

Analysis of battery current microcycles in autonomous renewable energy systems by Ruddell, A.J, Dutton, A.G, Wenzl, H, Ropeter, C, Sauer, D.U, Merten, J, Orfanogiannis, C, Twidell, J.W, Vezin, P

“…Battery currents in autonomous renewable energy systems (RES) are generally predicted or measured in terms of mean values over intervals of 1 min or longer. As…”
Get full text

Temperature behaviour : Comparison for nine storage technologies results from the INVESTIRE network by PERRIN, Marion, MALBRANCHE, Philippe, SAUER, D. U, SARRE, G, LEMAIRE-POTTEAU, Elisabeth, WILLER, B, SORIA, M. L, JOSSEN, A, DAHLEN, M, RUDDELL, A, CYPHELLY, I, SEMRAU, G

Get full text

Comparative study of a structured neural network and an extended Kalman filter for state of health determination of lithium-ion batteries in hybrid electricvehicles by Andre, D., Nuhic, A., Soczka-Guth, T., Sauer, D.U.

“…State of health (SOH) determination becomes an increasingly important issue for a safe and reliable operation of lithium-ion batteries in hybrid electric…”
Get full text

Modeling of the charge acceptance of lead–acid batteries by Thele, M., Schiffer, J., Karden, E., Surewaard, E., Sauer, D.U.

“…This paper presents a model for flooded and VRLA batteries that is parameterized by impedance spectroscopy and includes the overcharging effects to allow…”
Get full text

Bifunctional activation of a direct methanol fuel cell by Kulikovsky, A.A., Schmitz, H., Wippermann, K., Mergel, J., Fricke, B., Sanders, T., Sauer, D.U.

“…We report a novel method for performance recovery of direct methanol fuel cells. Lowering of air flow rate below a critical value turns the cell into…”
Get full text

DMFC: Galvanic or electrolytic cell? by Kulikovsky, A.A., Schmitz, H., Wippermann, K., Mergel, J., Fricke, B., Sanders, T., Sauer, D.U.

“…We report measurements of local current distribution in a direct methanol fuel cell with single straight channels and segmented electrodes. The experiments…”
Get full text

Analysis of the performance parameters of lead/acid batteries in photovoltaic systems by Sauer, D.U., Bächler, M., Bopp, G., Höhe, W., Mittermeier, J., Sprau, P., Willer, B., Wollny, M.

“…A systematic effort is made to define analysis and performance parameters for lead/acid batteries in photovoltaic (PV) systems. In this paper, results from the…”
Get full text

Model Parameterization of Nonlinear Devices Using Impedance Spectroscopy by Kowal, J., Hente, D., Sauer, D.U.

“…In this paper, a new approach is used to identify the parameters of a large-signal lumped-element model for nonlinear devices based on small-signal impedance…”
Get full text

Influence of plug-in hybrid electric vehicle charging strategies on charging and battery degradation costs by Lunz, Benedikt, Yan, Zexiong, Gerschler, Jochen Bernhard, Sauer, Dirk Uwe

“…The profitability of plug-in hybrid electric vehicles (PHEVs) is significantly influenced by battery aging and electricity costs. Therefore a simulation model…”
Get full text

Long-term cycling induced jelly roll deformation in commercial 18650 cells by Pfrang, A., Kersys, A., Kriston, A., Sauer, D.U., Rahe, C., Käbitz, S., Figgemeier, E.

“…The effects of extended charge/discharge cycling on the morphology of the jelly roll of commercial 18650 lithium-ion battery cells (Sanyo UR18650E) are shown…”
Get full text

Comparison of long-term wind and photovoltaic power capacity factor datasets with open-license by Moraes, L., Bussar, C., Stoecker, P., Jacqué, Kevin, Chang, Mokhi, Sauer, D.U.

“…•Open-license datasets based on the same meteorological data diverge from each other.•Six tests were implemented to quantify the differences.•Deviations were…”
Get full text

On-board aging estimation using half-cell voltage curves for LiFePO^sub 4^ cathode-based lithium-ion batteries for EV applications by Marongiu, A, Sauer, D U

“…The aim of this work is the design of an algorithm for on-board determination of the actual capacity of a lithium iron phosphate (LFP) cathode-based…”
Get full text