Novel Approach for Real-time Simulation of Power Eiectronic Circuits Comprising Fast FPGA-based Output Modeis

Hardware-in-the-loop simulation of power electronic devices is growing in importance in diverse fields. For testing the electronic control units in automotive applications hardware-in-the-loop simulation is a today's standard method. It is also applied for many industrial applications like power converters and electric drives. Anyway real-time capable models of power electronics are required. In this contribution, a novel approach for real-time simulation of power electronic circuits comprising fast FPGA-based output models is presented. Two types of modeling circuits are described and compared to each other. Both methods do not fulfill the requirements of the novel approach to combine the advantages of the processor- and FPGA-based simulation. Hence, parts of both methods were combined. Additionally, the switching event detection was improved for low latency reaction and a correction method based on average control is described. The simulation results matches to the reference very well. Therefore the novel approach Is an interesting alternative for hardware-in-the-loop simulation when the algorithm of the electronic control unit requires a very fast reaction on switching events.