NOVEL SENSORLESS VECTOR CONTROL SYSTEM OF INDUCTION MACHINE BASED ON FLUX OBSERVER IN FIELD WEAKENING

作     者：邹积勇 许镇琳 孙凯 

作者机构：SCHOOL OF ELECTRICAL ENGINEERING AND AUTOMATION TIANJIN UNIVERSITYTIANJIN 300072CHINA 

出 版 物：《Transactions of Tianjin University》 (天津大学学报（英文版）)

年 卷 期：2006年第12卷第1期

页      面：1-5页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

主　　题：induction machines (IMs) sensorless vector control flux observer speed estimation 

摘      要：A speed-sensorless vector control system for induction machines （IMs）is presented, According to the vector control theory of IMs, the rotor flux is estimated based on a flux observer,and the speed is estimated through the method of q-axis rotor flux converging on zero with proportional integral regulator, A 0.75 kW,50 Hz,two-pole induction machine was used in the simulation and experimental verification, The simulation model was constructed in Matlab. A series of tests were performed in the field weakening region, for both no-load and loaded operation. The estimated speed tracks the actual speed well in the based speed region and field weakening region （ 1 per unit value to 4 per unit value）. The small estimation error of residual speed is due to the existence of slip.