Power-Hardware-In-The-Loop-Based Emulation of a Self-Excited Induction Generator Under Unbalanced Conditions

In remote areas, self-excited induction generators (SEIG) are widely used to supply power, where unbalanced conditions are common. Often the SEIG is not available for laboratory testing and a power-hardware-in-the-loop (PHIL) emulator can be used. To investigate the SEIG operation under unbalanced conditions, a power-electronic-converter-based PHIL emulator is developed in this article. A comprehensive SEIG model that includes a variable stator/rotor leakage split ratio and saturation effect is established. Then, the emulator is formed with the built model and power-electronic-converter-based PHIL. Furthermore, the results of the SEIG system under unbalanced conditions are compared with the simulation in MATLAB/Simulink, tests on the built emulator system, and tests on a real SEIG system, verifying the effectiveness of the proposed solution.