| 引用本文: | 王汝田,崔永恒,陈酋峰,伏祥运.3×4矩阵变换器的双电压控制策略[J].电力自动化设备,2014,34(12): |
| WANG Rutian,CUI Yongheng,CHEN Qiufeng,FU Xiangyun.Strategy of double line-to-line voltages control for 3 × 4 matrix converter[J].Electric Power Automation Equipment,2014,34(12): |
|
| 摘要: |
| 针对3 × 3矩阵变换器（MC）不能带不平衡负载问题，应用3 × 4 MC拓扑结构，其增加的中线桥臂连接到负载中性点。继承3 × 3 MC的双电压控制方法，并根据其调制过程的分析、推导，得出在不平衡负载情况下，三相桥臂的输出电压中含有零序分量。对中线桥臂单独采用脉宽调制方法，控制负载中性点的电压为相应的零序电压，从而使输出负载电压为三相对称电压。最后应用MATLAB／Simulink进行了仿真，仿真结果表明，应用所提出的控制策略，3×4 MC可以为不平衡负载提供三相对称的电压， 验证了所提控制策略的正确性和有效性。 |
| 关键词: 3×3矩阵变换器 3×４矩阵变换器 不平衡负载 双电压控制策略 脉宽调制 变换器 电压控制 |
| DOI： |
| 分类号: |
| 基金项目: |
|
| Strategy of double line-to-line voltages control for 3 × 4 matrix converter |
|
WANG Rutian1, CUI Yongheng1, CHEN Qiufeng1, FU Xiangyun2
|
|
1.Electrical Engineering College，Northeast Dianli University，Jilin 132012，China;2.State Grid Lianyungang Power Supply Company，Lianyungang 222004，China
|
| Abstract: |
| As the 3 × 3 MC（Matrix Converter） can’t carry unbalance load，the topological structure of 3 × 4 MC is applied，which connects the neutral point of load to the added midline bridge. The strategy of double line-to-line voltages control for 3 × 3 MC is inherited and the analysis and deduction of its modulation process show that，the output voltages of three-phase bridges with unbalance load have the zero-sequence components. The pulse width modulation is applied to the midline bridge alone to control the neutral point voltage of load as the corresponding zero-sequence voltage，which makes the outputs of three-phase load voltage symmetric. Simulation model is built with MATLAB ／ Simulink and the simulative results show that，the 3 × 4 MC with the proposed control strategy provides symmetric three-phase voltage for the unbalance load，verifying its correctness and effectiveness. |
| Key words: 3×3 matrix converter 3×4 matrix converter unbalance load double line-to-line voltages control strategy pulse width modulation electric converters voltage control |
