Modeling and Identification of a Hybrid Motor Cable with a Length-dependent Damping Approach

Abstract:
This paper demonstrates the modeling of a complex hybrid motor cable of different lengths up to 75 m. An identified cable model is essential for simulation-based drive system design. To reduce development costs and effort, the parameter identification is executed with a cable of a length of 5 m. Special focus is set on the damping behavior of transient leakage currents resulting from the common mode operation of inverters. As this behavior is dependent of the cable length, a ladder-network damping model consisting of concentrated circuit elements is implemented and parameterized. Extensive validation concepts in the frequency domain and the time domain are shown and the results are presented.