S. Van Sterkenburg

• HAN University of Applied Sciences

The temperature of a Lithium battery cell is important for its performance, efficiency, safety, and capacity and is influenced by the environmental temperature and by the charging and discharging process itself. Battery Management Systems (BMS) take into account this effect. As the temperature at the battery cell is difficult to measure, often the...

This paper describes the design of a battery pack simulator (BPS). The BPS is an electronic device that emulates all cell voltages of a battery pack in order to test battery management systems (BMS). Cell characteristics and environmental conditions of individual cells, such as capacity or ambient temperature can be adjusted in order to examine the...

This paper describes the analysis of the efficiency of regenerative braking of two electric vehicles operating in the Rotterdam area. The methodology of this research consists of a real time driving cycle measurement, measuring and modelling the battery pack and modelling the complete drive train of the vehicle. In the last phase, measurements on a...

New experimental values of the three independent electrostriction coefficients of the alkaline earth fluorides CaF2, SrF2 and BaF2 are presented. Measurements are performed with improved measuring equipment. With this equipment the electrostrictive expansion of a sample is measured with an interferometer system whereby the influence of spurious dis...

Relations between the electrostriction and elastic and dielectric properties of the alkali halides have been derived. A linear relation is found between the electrostrictive coefficients on the one hand, and the elastic compliance tensor and third derivatives of the lattice energy on the other. To calculate the lattice energy the authors have consi...

The author presents the results of the measurements of the three independent electrostriction coefficients of LiF, NaF, NaCl, KCl, KBr, RbCl, RbBr and RbI. Measurements have been carried out with a double Michelson interferometer to ensure a high reliability. The values of the electrostriction coefficients presented here differ significantly from v...

New experimental data on the electrostriction coefficients of silicon and diamond are presented. Measurements have been performed by means of an interferometer system to ensure a high reliability of the measured dilatation. The value reported here of the electrostriction coefficient of diamond differs from one reported earlier. The difference is du...

The limitations of a Michelson He‐Ne laser interferometer used to measure electrostrictive strains is analyzed. It is found that Coulomb forces from the electric leakage field lead to mechanical vibrations of the sample and sample holder to such an extent as to disturb the measurement. A new double He‐Ne laser interferometer to measure the upper an...