| Abstract |
In order to emulate the behavior of three-phase machines in a hardware-in-the-loop test bench, anapplicable power electronic device is required. For this purpose, an inverter concept with four variablevoltage levels per phase is presented. This concept precisely fulfills the requirements of three-phasemachine emulation. The presented inverter is theoretically able to adjust the ideal countervoltage coursewhich is needed to emulate three-phase machines' electrical behavior. In contrast, the countervoltagesof commonly used power electronic devices suffer from deviation caused by switched-mode operationor limited bandwidth.Within this paper the setup of the four-level inverter is presented. Besides, the paper discusses a controlstrategy for operating the four-level inverter as a three-phase machine emulator. |
