以FPGA實現具不良電力品質的微型電網間之同步併聯

Synchronization of Inter-Microgrids with poor power quality Using FPGA

劉俊億(Chun-Yi Liu)

指導教授 ： 洪穎怡

中原大學/電機資訊學院/電機工程研究所/碩士(2015年)

https://doi.org/10.6840/CYCU.2015.00487

摘要

當微型電網因故障分裂成更小的微型電網A與微型電網B，此時微型電網A與微型電網B變成電力品質失真的系統。當故障排除後，微型電網A與微型電網B就需要進行同步併聯。本論文提出一種用於微型電網間併聯且適應不良電力品質的同步併聯方法，此方法利用克拉克轉換之相位追蹤法配合模糊規則，有效的抵抗諧波、電壓差與頻率差求得準確的相位差值，並調控同步過程的速度，以消除相位追蹤太快導致的暫態。本論文在Xilinx System Generator模擬環境中實現此同步控制器。最後，本論文提出之方法以模擬結果證明此方法有效適應不良電力品質，成功使微型電網A與微型電網B同步併聯。

關鍵字

同步併聯 ； 靜態開關 ； 微型電網 ； 克拉克轉換 ； 模糊理論

並列摘要

Micro-grids can be separated into Submicrogrid A and Submicrogrid B due to the occurrence of faults. Submicrogrid A and Submicrogrid B become a weak power system on account of poor power quality after the separation. Submicrogrid A and Submicrogrid B need synchronization after the fault is cleared. This thesis presents a synchronization method and can adapt to the poor power quality. The method is a novel phase tracking method using the Clark transform and fuzzy rule. The method can obtain accurate value of the phase error because it is immune to the harmonics, voltage difference, and frequency difference. It also can regulate speed for the synchronization process in order to eliminate the transient because of too fast phase tracking. The proposed synchronization controller is realized by using Xilinx System Generator. Simulation results show that the proposed method is effectively immune to the poor power quality and successfully make Submicrogrid A synchronize with Submicrogrid B.

並列關鍵字

Synchronization ； Static switch ； Micro-grid ； Clark transform ； Fuzzy rule

參考文獻

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