Concept Validation of Digital Twin-Based Power Losses Estimation Method for Traction Inverter Applications

This paper presents a digital twin concept to accurately estimate the power losses of a traction inverter operating under different dynamic driving cycles by utilizing analytical models. The paper illustrates the different stages involved in developing the digital twin, including data collection, optimisation techniques and training. A physical system is prepared to validate the concept, including a back-to-back motor inverter setup, required voltage and current sensors, control and DAQ device. Finally, the results show a high degree of correlation between the digital twin and the physical system, which verifies the validity of the proposed concept.