An Improved Two-Dimension P&O Algorithm for Balancing a Three-phase Induction Motor Supplied from a Single-phase Source

• Main Authors: Ding-Sian Cai, 蔡定憲
• Other Authors: Yaw-Juen Wang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/18937463083439509694

碩士 === 國立雲林科技大學 === 電機工程系 === 102 === An improved two-dimensional perturbation and observation (2DP&O) algorithm is proposed in this thesis that solves the direction misjudging problem of the old 2DP&O algorithm. This thesis begins with the theoretical analysis to find the best values of energy storage components of a three-phase induction motor with the modified Steinmetz connection. This is followed by using the improved 2DP&O in the control system that is able to find the best energy storage component values adjusted with static var compensator (SVC) to achieve the balanced condition, and keep the voltage unbalance factor under the limit set by the IEC standard. The EMTP/ATPDraw software is employed to carry out the dynamic simulation, and the LabWindows/CVI software to do the PC-based control interface, as the operating control core of the controller. In order to verify the effectiveness of the improved 2DP&O algorithm, data extracted from the experiment, analysis, and simulation, are compared to observe its performance.