以電力品質調整器改善電力品質之分析與模擬

Analysis and Simulation of Unified Power Quality Conditioner for Improvement of Power Quality

余浚銘(Chung-Mine Yu)

指導教授 ： 何金滿

中原大學/工學院/電機工程研究所/碩士(2006年)

https://doi.org/10.6840/cycu200600278

摘要

近年來由於工業需求，電力電子技術發展快速，使得非線性負載的使用急速增加，因非線性的特性將造成電力系統諧波污染，使得成電力品質惡化情況愈來愈嚴重，以前產業界會使用被動式電力濾波器來抑制諧波，但因其在使用仍有限制，因而近年來改採主動式電力濾波器的比例有逐漸增趨勢。主動式電力濾波器是採用電力電子技術來同時解決諧波抑制與功率因數改善等問題，亦可協助改善負載端之電力品質。主動式電力濾波器大概可分為並聯式、串聯式和混合式。並聯式改善諧波電流、功因等問題，串聯式改善電壓品質不良問題，而混合式則是搭配被動式濾波器使用，可降低主動式濾波器的額定需求。

在本論文中提出的是近年發展出來的整合式電力品質調整器(Unified Power Quality Conditioner)，是以二個背對背連接的主動式濾波器，共同使用一只直流鏈(DC-Link)儲能電容所組成的，分別作為並聯式及串聯式主動濾器，本文對其操作原理和控制架構予以分析與介紹。最後並以Matlab/Simulink 來分析、模擬其控制架構，證實其應用在電力品質之改善的可行性。

關鍵字

主動式電力濾波器 ； 整合式電力品質調整器

並列摘要

In industries, the non-linear loading is increasing more and more, which causes harmonic in the power system, pollutes the power system and causes the serious quality problem of power. In past, it’s common to use passive filter to reduce the harmonic effect. But this solution has some disadvantages. Recently , there are more and more companies to use Active Power Filter(APF) to improve the power quality.

There are three classes of active power filter, (1) parallel active power filter, (2) series active power filter, and (3) hybrid active power filter. Parallel APF can suppress the harmonic current and compensate reactive power. Series APF can compensate the voltage distortion. Hybrid APF is a combination of passive filter and active power filter for reducing APF’s rating.

We will discuss about Unified Power Qulaity Conditioner(UPQC) in this paper. It combines two back-to-back converters, and these converters share one DC-Link capacitor. In this paper, the operation theory and control of UPQC has been studied. Then, the reliability for the power quality improvement of this system is analysed by using Matlab/Simulink.

並列關鍵字

active power filter ； unified power quality conditioner

參考文獻

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