报告时间：3月27日（星期二）8:30                

报告地点：信息楼99905银河官方网310报告厅

报 告 人：郭海蛟 教授，日本东北学院大学

报告题目：基于内部模型原理的无刷直流电机(BLDCM)控制新方法

                     (A New Control Method of brushless DC motor (BLDCM) Based on Internal Model Principle)

内容简介：In popular high-performance vector-controlled brushless DC motor drivers, as a current control method, it is a conventional method to transform the alternate current to direct current by coordinating transformation technique, then using the PI controller to control the motor current. However, the amount of calculation increased in the coordinate transformations and the reverse transformation. In addition, at many practical cases, the current of motors contains various harmonics, so in the process of coordinate transformations, the transformation errors are at risk, then a usual PI controller cannot assure of zero steady-state errors. It directly affects the control accuracy. We propose a new control method of BLDCM based on “Internal Model Principle”. Considering the desired current in driving BLDCM is sinusoidal waveform, it is possible directly using “Internal Model Principle” in the current control loop to completely eliminate the steady-state current error. First, we introduce a transfer function contained the lossless resonant element into current control loop and verify that the current steady-state error can be completely eliminated. Then the design method of the current controller parameters is discussed. To confirm the effectiveness of the proposed control method, a simulation model has been constructed and many interesting results have been obtained.

报告人简介：Hai-Jiao Guo received the BSc degrees in Physical department from Shanghai Normal University in 1982, the MS and the Ph.D. degree in electrical engineering from the Tohoku University, Japan, in 1988 and 1993, respectively. He was an Assistant Professor with the Department of Electrical Engineering, Tohoku University, Japan, from 1990 to 1996, and Assistant Professor from 1996 to 2004. Since 2004, he has been with the Dept. of Elect. &Infom. Engng, Tohoku Gakuin University, Japan, where he is currently a professor.  He served as the chairman of the department from April 2014 to March 2016. His research areas include in robust design of digital servo system, and its application in the power electronics field, such as high performance drive of motors and inverter/converter.