- 學位論文
用於感應發電機互聯電力系統靜態同步補償器之設計
Design of Static Synchronous Compensator for a Grid-connected Induction Generator
摘要
隨著環保意識的抬頭，再生能源也逐漸受到重視，例如風力感應發電機系統即為其中一種方式。而三相感應發電機則成為動力的主要來源。但由於感應機本身有著電壓調整能力不佳的缺點，因此除了在風力發電外，常常不會被當作發電機使用。本論文提出設計一靜態同步補償器，提供系統無效電力，用來調整系統電壓，以及改善電壓品質。 靜態同步補償器，在架構上將由一直流電容器來提供電壓來源，並使用脈波寬度調變技術來完成三相電壓源型變流器的設計。 在模擬方面使用Matlab_simulink軟體來評估系統的補償效果，實驗方面採以個人電腦為基礎，配合研華科技公司PCL-1800資料擷取卡，透過C語言來達成電壓補償控制，最後由模擬及實驗結果來驗證靜態同步補償器應用於感應機互聯電力系統，確實可以有效維持系統電壓的穩定性。
並列摘要
As the issue of environmental protection receives increasing attention, renewable energy source, such as wind turbine-induction generator system, is getting more and more important. Three phase induction generators are the main source of the power. Induction machines are not commonly employed as generators except in the case of wind farms due to their unsatisfactory voltage regulation. Hence, in this thesis, a static synchronous compensator is designed to supply reactive power for the system and to regulate bus voltage, and to have better voltage profile on the customer side. The static synchronous compensator employs a direct current capacitor to offer voltage source and use the pulse-width modulation technology to adjust the output voltage of the three phase voltage source inverter. The effectiveness of the designed STATCOM is first investigated by digital simulations using the simulink of MATLAB software. Then, in the experiment, the control kernel of the STATCOM is based on a personal computer with Adventec PCL-1800 data acquisition cards. Finally, it is concluded from results of simulations and experiments that load bus voltage in a grid-connected induction generator can be effectively regulated by the STATCOM.