Through the adoption of the logic circuits, this article will successfully actualize the EPLL, which is based on the sample data, and validate this project in FPGA.

本文采用逻辑电路实现了基于采样数据的EPLL数字锁相环算法，并在FPGA电路中实现和实验验证该设计。

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Second, an Enhanced Phase Locked Loop (EPLL) control strategy based on improved Adaptive Notch Filtering (ANF) is proposed, controller parameters are optimized using BF-PSO algorithm.

其次，提出了一种基于改进型ANF的三相EPLL控制策略，并用BF-PSO算法对控制器参数进行优化设计。

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