Model Predictive Direct Current Control Strategy for Three-Level T-type Rectifier Under Unbalanced Grid Voltage Conditions

被引：0

作者：

Li, Xiaoyan ^{[1
]}

Zhang, Chenghui ^{[1
]}

Chen, Alian ^{[1
]}

Xing, Xiangyang ^{[1
]}

Zhang, Guangxian ^{[1
]}

机构：

[1] Shandong Univ, Sch Control Sci & Engn, Jinan 250061, Shandong, Peoples R China

来源：

THIRTY-THIRD ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2018) | 2018年

基金：

中国国家自然科学基金;

关键词：

model predictive direct current control; unbalanced grid voltages; three-level T-type rectifier; neutral-point balance; NEUTRAL-POINT VOLTAGE; AC/DC CONVERTER; INVERTERS; DESIGN; POWER;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In order to reduce the total harmonic distortion (THD) of grid current and output power fluctuations under unbalanced grid voltages, a model predictive direct current control (MPDCC) strategy is proposed for three-level T-type rectifier. The reference current is used as the control objective and calculated by grid voltages and its 1/4 delaying value. Compared with the conventional method, computation of instantaneous active power and reactive power, extraction of positive and negative sequence, phase-locked loop (PLL), PWM modulation and inner current loop are avoided. In addition, the redundant P-type and N-type small vectors are selected to control the neutral-point balance simultaneously. The experimental results are presented to verify the feasibility and effectiveness of proposed MPDCC strategy.

引用

页码：1514 / 1519

页数：6

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