| .一种无锁相环的有源电力滤波器的设计研究[J].电气自动化,2011,(4): |
| 一种无锁相环的有源电力滤波器的设计研究 |
| An Implemention of APF without PLL |
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| DOI： |
| 中文关键词: 有源滤波 谐波电流 变流器 锁相环 电流检测 |
| 英文关键词:APF Harmonic current Converter PLL Current test |
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| 摘要点击次数: 2627 |
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| 中文摘要: |
| 提出了一种基于ip-iq方法检测电网谐波电流的新型有源电力滤波器的设计方案,该方案电路简单且可有效避免电因网电压畸变对测量带来的影响。方案利用无锁相环技术,通过对电网电压同步信号的检测,用软件方法跟踪电网电压频率的波动,从而简化了电路设计,减少了硬件成本,通过限制最高频率的滞环比较方法加快跟踪速度,提高了跟踪精度,增加了滤波性能,同时也避免了开关管因过热而损坏。通过实验证明了方案的可行性和可靠性。 |
| 英文摘要: |
| A new implemention of active power filter based on ip-iq method to compute the harmonics of the ultility is presented in this paper,in addition,the circuit of this method is simple and almost immune to the influence caused by voltage distortion of the grid.This method does not use PLL,instead,adopts software method to track the frequency of the grid voltage with the synchronizing signal of the grid voltage detected by specific circuit.In this way,the design of circuit is simplified,the hardware cost is redu... |
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