A new Look-up Table-Direct Power Control Strategy for Three-Level NPC Rectifier Using Predictive DPC

Conference: NEIS 2017 - Conference on Sustainable Energy Supply and Energy Storage Systems
09/21/2017 - 09/22/2017 at Hamburg, Deutschland

Proceedings: NEIS 2017

Pages: 6Language: englishTyp: PDF

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Kahia, Billel; Abdelrahem, Mohamed; Kennel, Ralph (Institute for Electrical Drive Systems and Power Electronics, Technical University of Munich (TUM), Germany)
Bouafia, Abdelouaheb; Chaoui, Abdelmadjid (Department of Electrical Engineering, Ferhat Abbas University of Setif, Algeria)

In this paper, a combined control strategy (conventional look-up table-direct power control (LUT-DPC) with predictive direct power control (P-DPC)) for a three level NPC rectifier under ideal grid voltage is proposed and discussed. When the conventional LUT-DPC and its conventional switching table are used, a high total harmonic distortion (THD) of the input currents and fluctuations in the reactive power waveform during the beginning part of each odd sector are obtained. Therefore, a predictive direct power control (P-DPC) is applied during the beginning part of each odd sector to eliminate the fluctuations in the reactive power waveform and to achieve low THD of grid currents. Then, by using Matlab/Simulink, comparative simulation results are given to validate the performance and effectiveness of the proposed method (LUT-DPC with P-DPC).