| 双电压闭环控制谐波电流检测方法的改进 |
| |
| 引用本文： | 王晓远,裴钰,杨飞. 双电压闭环控制谐波电流检测方法的改进[J]. 电力系统及其自动化学报, 2006, 18(1): 48-52 |
| |
| 作者姓名： | 王晓远 裴钰 杨飞 |
| |
| 作者单位： | 天津大学电气与自动化学院,天津,300072;天津大学电气与自动化学院,天津,300072;天津大学电气与自动化学院,天津,300072 |
| |
| 摘 要： | 针对在负载电流有较大突变时补偿电路会产生较大畸变,以及三相电压畸变时ip-iq检测法存在的误差等问题,提出了一种改进的ip-iq检测法。在该检测法中加入了双电压闭环控制,以消除负载电流突变时产生的畸变;并采用一种新颖的基于低通滤波的A相正序电压提取单元代替原始ip-iq检测法的PLL锁相环,在三相电压畸变情况下仍可以正确提取A相正序电压,以精确检测出谐波和无功电流。研究和仿真结果表明,改进的ip-iq检测法在各种情况下都具有很好的补偿效果。
|
| 关 键 词： | 有源滤波器 补偿电流 谐波 闭环控制 |
| 文章编号： | 1003-8930（2006）01-0048-05 |
| 收稿时间： | 2005-09-23 |
| 修稿时间： | 2005-11-15 |
Improvement of Detection Method for Harmonic Currents Based on Double Voltage Close-Loop Control |
| |
| WANG Xiao-yuan,PEI Yu,YANG Fei. Improvement of Detection Method for Harmonic Currents Based on Double Voltage Close-Loop Control[J]. Proceedings of the CSU-EPSA, 2006, 18(1): 48-52 |
| |
| Authors: | WANG Xiao-yuan PEI Yu YANG Fei |
| |
| Affiliation: | School of Electrical Engineering and Automation,Tianjin University, Tianjin 300072, China |
| |
| Abstract: | Obvious distortion is caused by compensation circuits when load current varies promptly in a large scope.Distinct error occurs when i_p-i_q detecting approach is used in the case of unbalanced 3-phase voltage.As a solution,a developed detecting approach is proposed.Double close-loop control for DC link voltage is added to the method to achieve nice tracing performance of compensating current.A novel low pass filting based positive-sequence voltage extracting unit substitutes for the original i_p-i_q PLL to ensure exact voltage of phase A is extracted even in case of imbalance three-phase voltage.Results of simulation show satisfying compensating effect with proposed detecting approach whereas mentioned original methods suffer errors. |
| |
| Keywords: | active power filter(APF) compensating current harmonics close-loop control |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
