Practical Online Modulation Method for Current Ripple and Switching Losses Reduction in the Three-Phase Voltage Source Inverters

2021 ◽  
Vol 36 (2) ◽  
pp. 1475-1490
Author(s):  
Cheng Xu ◽  
Shuai Lu
Keyword(s):  
Modulation Method ◽  
Voltage Source ◽  
Phase Voltage ◽  
Voltage Source Inverters ◽  
Switching Losses ◽  
Three Phase ◽  
Current Ripple

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

Electronics ◽  
2019 ◽  
Vol 8 (6) ◽  
pp. 625 ◽  
Author(s):  
Eun-Su Jun ◽  
So-young Park ◽  
Sangshin Kwak
Keyword(s):  
Control Method ◽  
Harmonic Distortion ◽  
Sampling Period ◽  
Current Control ◽  
Voltage Source ◽  
Phase Voltage ◽  
Small Current ◽  
Voltage Source Inverters ◽  
Switching Losses ◽  
Three Phase

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.

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