Development of Three Phase Multi-Function Active Power Filter

• Main Authors: Wen-Jei Ai, 艾文傑
• Other Authors: Faa-Jeng Lin
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/38925607280339893630

碩士 === 中原大學 === 電機工程研究所 === 89 === The object of this thesis is to develop a multi-functional active power filter (APF) that can be multi-module parallel operation. The functions include compensation of the load current harmonics, reactive power and three-phase unbalanced currents aiming that the input currents are balanced with low distortion and the input power factor is unity. As for the control method, the synchronous-frame-based algorithm for reactive power compensation combined with the band-pass filter for harmonic current calculation is adopted for achieving a better filtering performance under the distorted voltage supply. A real power compensation technique is also proposed for balancing the unbalanced load currents. The cascaded series load current sensing method accompanying with the capacity-limitation control (including the reactive power capacity, harmonic current amplitude and unbalanced load power limitations) is employed to make multiple APFs can be paralleled without any control interconnection. A 3KVA APF system is implemented, the effectiveness of the proposed methods are proved in terms of some EMTP simulation and experimental results.