Study of Active Power Filter with Adaptive Control

• Main Authors: Po-Hung lin, 林柏宏
• Other Authors: Jia-You Lee
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/7fd353

碩士 === 國立成功大學 === 電機工程學系碩博士班 === 90 === Recently, the problem of power quality aggravation caused by power harmonic produced because of power electronic equipments has been concerned. So this thesis is mainly focused on the improvement of harmonic problem to propose solution. The content in the thesis has two parts: the first is to add a parallel active power filter in system, whose function is to get the same scale and phase of nonlinear load through sensing equipment and then product the combination of the same scale but opposite phase by active filter to cancel the harmonic caused by nonlinear load. Because the phenomenon of signal delay will affect the result of tracking compensated current, in the second part of this thesis it also adds the adaptive control method to solve the above-mentioned problem. In this way it can get more correctly compensated current to improve the effect of harmonic cancellation.