Physics-Based Device-Level Power Electronic Circuit Hardware Emulation on FPGA

Accurate models of power electronic devices are necessary for hardware-in-the-loop (HIL) simulators. This paper proposes a digital hardware emulation of device-level models for the insulated gate bipolar transistor (IGBT) and the power diode on the field programmable gate array (FPGA). The hardware emulation utilizes detailed physics-based nonlinear models for these devices, and features a fully paralleled implementation using an accurate floating-point data representation in VHSIC hardware description language (VHDL) language. A dc-dc buck converter circuit is emulated to validate the hardware IGBT and diode models, and the nonlinear circuit simulation process. The captured oscilloscope results demonstrate high accuracy of the emulator in comparison to the offline simulation of the original system using Saber software.