Study on Three-Phase Stand-Alone Power Inverter for Unbalance and Nonlinear Loads

• Main Authors: Che-WeiChang, 張哲瑋
• Other Authors: Le-Ren Chang-Chien
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/73908575655025667537

碩士 === 國立成功大學 === 電機工程學系 === 102 === To supply the modern electrical equipment, it is needed to develop an inverter that can compensate current harmonics with fast voltage response. However, due to the limited capability of the proportional and integral Controller (PI Controller) to deal with unbalance and nonlinear loading problems, this thesis introduces the proportional and resonant controller (PR Controller) for dealing with similar loading conditions. First, by analyzing the loading behavior and designing a cascaded PR controller, it improves the power quality of unbalance and nonlinear loadings. The contents of this thesis include modeling of a three-phase stand-alone inverter, derivation of the predictive current controller, and design procedure of the PR Controller. Tests of three different controllers (PI Controller, dual PR Controller, and Proportional and Resonant controller with Predictive Current Controller) are applied to the three-phase stand-alone system to show that the PR with PCC controller presents the best power quality performance compared with those of the counterparts.