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Model Predictive Current Control Method with Improved Performances for Three-Phase Voltage Source Inverters

School of Electrical and Electronics Engineering, Chung-ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea
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Electronics 2019, 8(6), 625; https://doi.org/10.3390/electronics8060625
Received: 25 April 2019 / Revised: 29 May 2019 / Accepted: 31 May 2019 / Published: 3 June 2019
(This article belongs to the Section Power Electronics)
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Abstract

In this paper, the model predictive current control (MPCC) method using two vectors has been proposed to control output currents of three-phase voltage source inverters (VSIs) with small current errors and current ripples. Also, the proposed method can reduce switching losses by applying the vector pre-selection technique to the MPCC for the VSI. The VSI generates seven voltage vectors to control the output currents, but the proposed method uses four available voltage vectors with one switch, which are classified by the vector pre-selection method clamping one leg and conducting the largest output current among the three legs to reduce the switching losses. In the proposed method, selecting two future voltage vectors among the four voltage vectors and dividing them in a future sampling period are determined by an optimization process. The proposed method results in the lower total loss, better total harmonic distortion (THD), and smaller current errors than the conventional method with half the sampling period of the proposed method due to the optimal process. Simulation and experimental results of the three-phase VSIs are presented in order to verify the effectiveness of the proposed method. View Full-Text
Keywords: three-phase voltage source inverter; model predictive current control three-phase voltage source inverter; model predictive current control
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Jun, E.-S.; Park, S.-Y.; Kwak, S. Model Predictive Current Control Method with Improved Performances for Three-Phase Voltage Source Inverters. Electronics 2019, 8, 625.

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