Hardware-in-the-loop capable state-space-averaging models for power converters in discontinuous conduction mode considering parasitic component behavior

Hardware-in-the-loop simulation is a today´s standard method for testing electronic equipment in the automotive industry. This always requires a real-time simulation of the plant and since power electronic devices are more and more important in automotive applications, real-time capable models of power electronic circuits need to be developed, accordingly. Power converters are used in many different applications in vehicles today (hybrid electric or electric powertrain, electric steering systems, DC-DC converters, etc.) which yields various power electronic topologies. Therefore universal approaches would be advantageous, which allows the modeling of arbitrary topologies without any assumptions about the operating mode. This paper presents a new approach for the real-time simulation of power electronic circuits. It is shown, that the approach yields the same models as the state-space averaging method with correction, but also enables to consider higher harmonics in the discontinuous conduction mode of DC-DC converters. The approach is also proven by simulation results.