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| 市电畸变情况下三相UPS的一种锁相方法 | |
| 引用本文： | 廖慧,饶明辉,丘水生,涂用军.市电畸变情况下三相UPS的一种锁相方法[J].电力电子技术,2009,43(8). |
| 作者姓名： | 廖慧 饶明辉 丘水生 涂用军 |
| 作者单位： | 1. 广州科技贸易职业学院,广东,广州,511442;华南理工大学,广东,广州,510640 2. 广州科技贸易职业学院,广东,广州,511442 3. 华南理工大学,广东,广州,510640 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 锁相性能是衡量UPS性能的一个重要指标.在市电畸变情况下.传统的过零检测鉴相方法容易得到错误的相位信息而导致锁相环失锁.提出一种基于瞬时功率理论的二相UPS锁相方法.该方法通过消除瞬时功率的直流分量达到锁相目的.该锁相环带有正序分量检测环节,能够在市电电压不平衡情况下,实现对其基波正序分量的锁相.对锁相环模型进行了分析,确定了环路滤波器参数的选取原则.系统由32位TMS320F2812型DSP实现全数字化控制.实验结果表明了该锁相系统的良好性能. |
| 关 键 词： | 不间断电源 锁相环控制/瞬时功率 畸变市电 |
A Phase-locked Method for Three-phase UPS under distorted Utility Conditions |
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| LIAO Hui,RAO Ming-hui,QIU Shui-sheng,TU Yong-jun.A Phase-locked Method for Three-phase UPS under distorted Utility Conditions[J].Power Electronics,2009,43(8). | |
| Authors: | LIAO Hui RAO Ming-hui QIU Shui-sheng TU Yong-jun |
| Affiliation: | LIAO Hui1,2,RAO Ming-hui1,QIU Shui-sheng2,TU Yong-jun2 (1.Guangzhou Polytechnic of Science , Trade,Guangzhou 511442,China,2.South China University of Technology,Guangzhou 510640,China) |
| Abstract: | The characteristic of phased-locked loop(PLL)is an important index to evaluate the performance of uninterruptible power supply (UPS).The classical phase discriminator of PLL depending on detecting the zero-crossing points results in false phased-locked lock easily due to the error phase information under distorted utility conditions.This paper proposes a PLL based on instantaneous power theory for three-phase UPS,which implements three-phase phase-locked through eliminating the DC component of instantaneous... |
| Keywords: | uninterrupted power supply phase-locked control/instantaneous power distorted utility |
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