| 引用本文: | 王宝安,孟庆刚,商 姣,黄学良,刘 伟.一种新型动态电压恢复器的仿真与实验[J].电力自动化设备,2013,33(9): |
| WANG Baoan,MENG Qinggang,SHANG Jiao,HUANG Xueliang,LIU Wei.Simulation and experiment of new-type dynamic voltage restorer[J].Electric Power Automation Equipment,2013,33(9): |
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| 摘要: |
| 提出一种新型可连续运行动态电压恢复器，主电路采用级联多电平结构，电网电压经过各隔离变压器后分别进行整流，给逆变单元的直流电容供电，通过电容耦合方式串入电网与负载之间；采用同相补偿法对电网电压进行幅值补偿，并引入改进的dq变换直接在线计算出补偿电压。利用PSIM软件进行仿真分析，并研制了实验样机。仿真及实验结果表明，该动态电压恢复器能够快速、有效补偿电网电压跌落以及电网电压谐波，保证了负载侧的用电质量。 |
| 关键词: 可连续运行动态电压恢复器 级联多电平 同相补偿法 改进的dq变换 补偿 电压控制 |
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| Simulation and experiment of new-type dynamic voltage restorer |
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WANG Baoan1, MENG Qinggang1, SHANG Jiao1, HUANG Xueliang1, LIU Wei2
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1.Electrical Engineering School，Southeast University，Nanjing 210096，China;2.NR Electric Co.，Ltd.，Nanjing 211102，China
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| Abstract: |
| A new-type uninterrupted dynamic voltage restorer is proposed，which adopts multi-level topology in its main circuit and locates between grid and load via capacitor coupling. Grid voltage is isolated by transformer and rectified to supply DC capacitor. The in-phase compensation is applied for the magnitude compensation of grid voltage and the improved dq transformation for the calculation of compensation voltage. Simulation with software PSIM and experiment of a prototype demonstrate that，the proposed dynamic voltage restorer compensates the voltage drop and voltage harmonics of power grid quickly and effectively，ensuring the power quality at load side. |
| Key words: uninterrupted dynamic voltage restorer cascaded multi-level in-phase compensation improved dq transformation compensation voltage control |
