A New Configuration for Static Ground Power Unit

In this paper, a new designing procedure is proposed for the static ground power unit of airplanes. The proposed structure is generally made up of an input and output section, introduced as the dc and ac sides. In order to reach a superior rectifying operation, both six pulse rectifier and injection of third harmonic current have been considered at the dc side of the proposed ground power unit. In the ac side, a neutral point clamped inverter has been implemented to reach a high performance output required by the GPU. Every single part of the proposed configuration has been discussed, designed and presented including third harmonic injection method, inductors, dc link capacitors, the output filter and the isolation transformer. The proposed ground power unit has been simulated in Matlab/Simulink environment. The simulation results confirmed its superior performance by providing a standardized ac voltage at the output for GPU applications.