用於與市電併聯感應發電機調整之動態電壓調整器設計

A Dynamic Voltage Restorer for the Voltage Regulation of a Grid-tied Squirrel-cage Induction Generator

黃維綱(Wei-Kang Huang)

指導教授 ： 許源浴

國立臺灣大學/電機資訊學院/電機工程學研究所/碩士(2011年)

https://doi.org/10.6342/NTU.2011.00061

摘要

受到能源危機與氣候變遷的影響，綠色能源的開發與利用越來越被重視；其中，風力發電由於成本低廉、無污染，且取之不盡、用之不竭，已成為當今最受矚目的替代能源之一。風力發電機的形式眾多，其中鼠籠式感應發電機成本最為低廉，控制方法簡單，可大量裝置在風力資源豐沛的地區；但由於鼠籠式感應發電機缺乏對無效電力控制的能力，當系統發生負載變動或故障時，無法負擔支撐系統的責任；當風速不穩定時，發電機會產生不穩定的電力潮流，影響電力品質。對此，本論文將模糊邏輯控制應用在動態電壓調整器之設計，用以控制鼠籠式感應發電機流入系統匯流排之電力潮流並穩定系統電壓，改善電力品質。本論文以實驗證明動態電壓調整器在負載變動或是風速變動的情況下皆能有效穩定系統電壓。

關鍵字

動態電壓調整器 ； 風力發電 ； 鼠籠式感應發電機 ； 變流器 ； 模糊邏輯控制

並列摘要

The development and use of green energies receive much attention because of energy crisis and climate changes. Wind energy generation plays an important role in green energy developments since it has many advantages such as low cost, no pollutions, inexhaustible supply of wind energy. Among the various types of wind power generator, squirrel-cage induction generators have been widely employed due to low costs and easy to control. However, the squirrel-cage induction generators are not capable of providing voltage regulation when the system is subjected to load changes or faults due to the lack of rotor excitation. Moreover, the ever-changing wind speed causes fluctuating power flows in the system and has negative impacts on power quality. In this thesis, a dynamic voltage restorer (DVR) controlled by a fuzzy logic controller is designed for voltage regulation of a squirrel-cage induction generator. It is concluded from experimental results that the system voltage can be effectively regulated by the proposed DVR.

並列關鍵字

Dynamic voltage restorer ； Wind power generation ； Squirrel-cage induction generator ； inverter ； Fuzzy logic control

參考文獻

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