Assessment of the Efficiency Measurement Uncertainty and the Impact on Validation for Electric Drive Systems
Uday Akasapu, Michael Leighton · 2022
This paper investigates the uncertainties concerning the measurements in efficiency testing of an Electric Drive System (EDS), consisting of e-motor, inverter and transmission sub-systems. The paper will present a case study on how to consider uncertainties in the measurement chain, demonstrate a technical workflow for testing of the EDS and benchmark the results of testing with different previously executed measurements and results from simulations. With this study, a correlation between testing and simulation is explored through graphs with confidence bounds and gaps between virtual testing and testing in real-life are identified. Finally, a critical consideration will be given to how the uncertainties in measurement should be considered in the assessment of requirement coverage and validation