Design and Implementation of Real-Time Simulation Solver for High Frequency Power

In power electronic, the goal is often to increase the power density and improve efficiency of a converter. Although this can be achieved with newer technologies such as multilevel converters, industries are known to be very conservative and often prefers older converter topology with improved components. Silicon carbide switches can increase switching frequency of converters, making it possible to achieve a higher power density and efficiency of a converter. Increasing PWM frequency also raise new challenges during design and validation of the converter due to limitations of real-time simulator sampling. This paper presents a new real-time simulator implementation solving the issue of power switches gating signal sampling, as well as the discretization of extremely small time-constant for real-time applications. The proposed simulation tool is validated against an offline simulation of a three-phase interleaved-boost converter operated at 169.25 kHz.