Design and simulation of electrical dynamometer using improved DTC induction motor driver  

作　　者：ZHU Cheng-li WANG Yan-zhong HOU Liang-wei 朱成礼;王延忠;侯良威

机构地区：[1]School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China

出　　处：《Journal of Central South University》2017年第6期1360-1368,共9页中南大学学报（英文版）

基　　金：Project(SS2012AA04104)supported by High-tech Research and Development Program of China

摘　　要：AC motors, especially the squirrel cage induction motors have the advantages of simple structure, good reliability and low cost. They are more suitable to be used as electrical dynamometers to provide dynamic load for bench test systems. But, the speed and torque of induction motors are not easy to be controlled accurately. In this work, an electrical dynamometer based on the induction motor is proposed. In order to get better control performance of torque and speed of induction motor, an improved direct torque control method(DTC) is also developed based on the space vector modulation(SVM) technique. The performance of the proposed dynamometer system is validated in the Matlab/Simulink platform. The simulation results show that the new dynamometer has good torque and stator flux response. And the torque and stator current ripples of it are reduced significantly compared with using the conventional DTC method.AC motors, especially the squirrel cage induction motors have the advantages of simple structure, good reliability and low cost. They are more suitable to be used as electrical dynamometers to provide dynamic load for bench test systems. But, the speed and torque of induction motors are not easy to be controlled accurately. In this work, an electrical dynamometer based on the induction motor is proposed. In order to get better control performance of torque and speed of induction motor, an improved direct torque control method(DTC) is also developed based on the space vector modulation(SVM) technique. The performance of the proposed dynamometer system is validated in the Matlab/Simulink platform. The simulation results show that the new dynamometer has good torque and stator flux response. And the torque and stator current ripples of it are reduced significantly compared with using the conventional DTC method.

关 键 词：DYNAMOMETER induction motor DIRECT TORQUE CONTROL (DTC) DIRECT TORQUE CONTROL method-space vector modulation DTC-SVM PI controller 

分 类 号：TM346[电气工程—电机]