单相锁相环不同方法的比较分析

J. Afonso, C. Couto, L. Monteiro, J. G. Pinto, V. Monteiro
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引用次数: 0

摘要

摘要:本文对两种不同的同步电路进行了比较分析,这两种电路通常是单相电能质量应用中控制算法的核心。其中一个同步电路对应于一个单相锁相环(PLL),实现在α - β坐标((cid:3)(cid:3) β -PLL),而另一个对应于增强PLL (E-PLL)。本文的主要贡献是提出了一种面向电能质量应用的单相锁相环,其结构非常简单,即使考虑到频率偏差、相移、谐波分量和幅度变化等实质性干扰,也能与输入信号的基本分量(电压或电流)同步。本文给出了两种同步电路在三种不同测试用例下的仿真和实验结果,以比较它们的暂态和稳态性能。此外,还比较了这些同步电路在DSP TMS320F28335上的处理速度和内存需求。
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Comparative analysis between different approaches for single-phase PLLs
(cid:2) Abstract — This paper presents a comparative analysis between two distinct synchronizing circuits, which are usually applied as the core of control algorithms for single-phase power quality applications. One of these synchronizing circuits corresponds to a single-phase Phase-Locked Loop (PLL), implemented in α - β coordinates ( (cid:3)(cid:3) β -PLL), whereas the other one corresponds to the Enhanced PLL (E-PLL). The major contribution of this paper is to present a single-phase PLL oriented to power quality applications, with a very simple structure, capable to be synchronized with the fundamental component of an input signal (voltage or current), even considering substantial disturbances, such as, frequency deviations, phase shifts, harmonic components and amplitude variations. Simulation and experimental results, involving these two synchronizing circuits submitted to three different test cases, are provided in order to compare their transient and steady-state performance. Moreover, it is also presented a comparison involving the processing speed and memory requirements of these synchronizing circuits in the DSP TMS320F28335.
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来源期刊
International Journal of Power Electronics
International Journal of Power Electronics Engineering-Electrical and Electronic Engineering
CiteScore
1.30
自引率
0.00%
发文量
84
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