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This paper proposes
a novel discrete differential geometry of n-simplices.
It was originally developed for protein structure analysis. Unlike previous
works, we consider connection between space-filling n-simplices. Using cones of an integer lattice, we introduce
tangent bundle-like structure on a collection of n-simplices naturally. We have applied the mathematical framework
to analysis of protein structures. In this paper, we propose a simple encoding
method which translates the conformation of a protein backbone into a 16-valued
The over-voltage phenomenon is usually described using the traveling wave and reflection phenomena in variable speed drive system. A voltage pulse, initiated at the inverter, being reflected at the motor terminals due to a mismatch between the surge impedance of the motor and the cable. In this paper, resistance, inductance and capacitance of the cable and the motor windings are obtained experimentally by modal measurements and suitable models are developed to match the experimental results by considering resonance in the motor winding. This paper emphasize on Induction motor model using the theory of natural modes of propagation. The developed model validity is investigated for inverter surge application.