| 电网电压不平衡下直接功率矢量控制 |
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| 引用本文： | 王辉,赵张飞,郭蓓蕾.电网电压不平衡下直接功率矢量控制[J].电力电子技术,2012,46(8):66-67,96. |
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| 作者姓名： | 王辉 赵张飞 郭蓓蕾 |
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| 作者单位： | 1. 三峡大学,电气与新能源学院,湖北宜昌443002
2. 河南城建学院,电气与电子工程系,河南平顶山 467036 |
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| 摘 要： | 基于三电平PWM整流器的数学模型,结合瞬时功率理论得到了三电平PWM整流器的功率数学模型。通过对电网电压不平衡时整流器进行分析得到了功率表达式。根据功率数学模型提出了用于电网电压不平衡抑制交流侧三相电流负序分量的DPC-SVM控制策略。仿真和实验结果表明,此处提出的控制策略能有效抑制交流侧负序电流。
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| 关 键 词： | 整流器 电网电压不平衡 矢量控制 |
Direct Power Control System Under Unbalanced Grid Voltage |
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| WANG Hui
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ZHAO Zhang-fei
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GUO Bei-lei.Direct Power Control System Under Unbalanced Grid Voltage[J].Power Electronics,2012,46(8):66-67,96. |
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| Authors: | WANG Hui ZHAO Zhang-fei GUO Bei-lei |
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| Affiliation: | 1.China Three Gorges University,Yichang 443002,China) |
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| Abstract: | The power mathematical model of the three-level PWM rectifier is constructed based on its mathematical model and instantaneous power theory.According to analyzing the rectifier under unbalanced grid voltage,the power expression is obtained.This model also provides the DPC-SVM control strategy to restrain the negative sequence components of the three-phase current on AC side under unbalanced grid voltage.The simulation and experiment findings suggest the proposed control strategy can effectively restrain the negative sequence components on AC side. |
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| Keywords: | rectifier grid voltage unbalanced vector control |
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