标题:Model Predictive Direct Current Control Strategy for Three-Level T-type Rectifier Under Unbalanced Grid Voltage Conditions
作者:Li, Xiaoyan; Zhang, Chenghui; Chen, Alian; Xing, Xiangyang; Zhang, Guangxian
通讯作者:Li, XY
作者机构:[Li, Xiaoyan; Zhang, Chenghui; Chen, Alian; Xing, Xiangyang; Zhang, Guangxian] Shandong Univ, Sch Control Sci & Engn, Jinan 250061, Shandong, Peoples 更多
会议名称:33nd Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
会议日期:MAR 04-08, 2018
来源:THIRTY-THIRD ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2018)
出版年:2018
页码:1514-1519
关键词:model predictive direct current control; unbalanced grid voltages;; three-level T-type rectifier; neutral-point balance
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.
收录类别:CPCI-S
资源类型:会议论文
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