Moving Average Filter Based Phase-Locked Loops: Performance Analysis and Design Guidelines
Moving Average Filter Based Phase-Locked Loops: Performance Analysis and Design Guidelines
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DOI：
10.1109/tpel.2013.2273461
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发表时间：
2014-06-01
影响因子：
6.7
通讯作者：
Monfared, Mohammad
中科院分区：
文献类型：
--
作者：
Golestan, Saeed;Ramezani, Malek;Monfared, Mohammad
锁相环（PLL）可能是并网应用中使用最广泛的同步技术。与PLL相关的主要挑战是，当电网电压不平衡和/或失真时，如何精确和快速地估计相位和频率。为了克服这一挑战，在最近的一些文献中已经提出将移动平均滤波器（MAF）并入PLL结构中。MAF是一种线性相位有限脉冲响应滤波器，如果满足某些条件，它可以充当理想的低通滤波器。本文的主要目的是提出一个典型的基于MAF的锁相环的控制设计准则。本文首先对MAF进行了概述。然后解释了与使用MAF相关的主要挑战，并讨论了其可能的解决方案。然后，本文将对不同的基于MAF的PLL进行简要概述。在每种情况下，都会显示PLL框图描述，简要讨论其优点和局限性，并评估调谐方法（如果可用）。然后，本文提出了两种系统的方法来设计一个典型的基于MAF的PLL的控制参数：一个的情况下，使用比例积分（PI）型环路滤波器（LF）的PLL，和其他的情况下，使用比例积分微分（PID）型LF。最后，本文比较了使用PI型LF与使用PID型LF的结果时，基于MAF的良好调谐PLL的性能，从而对它们的能力和局限性提供了有用的见解。
The phase-locked loops (PLLs) are probably the most widely used synchronization technique in grid-connected applications. The main challenge that is associated with the PLLs is how to precisely and fast estimate the phase and frequency, when the grid voltage is unbalanced and/or distorted. To overcome this challenge, incorporating moving average filter(s) (MAF) into the PLL structure has been proposed in some recent literature. An MAF is a linear-phase finite-impulse-response filter, which can act as an ideal low-pass filter, if certain conditions hold. The main aim of this paper is to present the control design guidelines for a typical MAF-based PLL. The paper starts with the general description of MAFs. The main challenge associated with using the MAFs is then explained, and its possible solutions are discussed. The paper then proceeds with a brief overview of the different MAF-based PLLs. In each case, the PLL block diagram description is shown, the advantages and limitations are briefly discussed, and the tuning approach (if available) is evaluated. The paper then presents two systematic methods to design the control parameters of a typical MAF-based PLL: one for the case of using a proportional-integral (PI) type loop filter (LF) in the PLL, and the other for the case of using a proportional-integral-derivative (PID) type LF. Finally, the paper compares the performance of a well-tuned MAF-based PLL when using the PI-type LF with the results of using the PID-type LF, which provides useful insights into their capabilities and limitations.