哈尔滨工业大学（深圳）学术讲座

演讲人Speaker：Dr. Shahid Atiq

题目Title: Winding Switching technique for the flux weakening of the non-salient Permanent Magnet machines

时间Date：2023年 11月 22日     

时间Time：下午 14：00 ~ 15：00

地点Venue： H 栋 301 室  

内容摘要Abstract：

Electric and hybrid vehicles are making their way in the automobile industry and electric motors are replacing combustion engines. PMSM are promising candidates for this application due to their high torque density and superior performance. However, these machines suffer from inverter saturation problems at high speed. These machines need to be designed with high R/X ratios to enable their required flux weakening for these applications.

A recently developed technique of winding switching proposed a promising solution for this problem and make these machine designs free from high R/X values and reduce the size of the machines. In this technique, the winding of the machine is split into two windings and these windings are operated in additive as well as subtractive flux configurations to operate the machines initially at low speed and high torque, and at high speed and low torque after the machines achieve their base speeds. Dual inverter is used to operate theses machines. Machines can be operated in various high speeds configurations and may be utilized in other applications as well that require very high speed compared to the base speed of the machines. Also, as no negative d-axis current is applied in this technique.

个人简介(About the speaker):

Dr. Shahid Atiq was born in Pakistan in 1983 and received his bachelor’s and master’s degrees in electrical engineering from University of Engineering and Technology Taxila Pakistan. He received his PhD degree in electronic system design from Hanyang University South Korea with specialization in Electrical machine design and drive. He is currently working as an associate professor in the Department of Electrical and Biomedical Engineering at Khwaja Fareed University of Engineering and Information Technology (KFUEIT), Rahimyar Khan, Pakistan.

His expertise are in the control of Non-Saliant PM machine for high speed applications. He has also worked for the drive systems of the brushless wound rotor synchronous machines and the doubly fed reluctance machines. He has also worked with the power electronics converters and to resolve the power quality issues through different types of UPS systems including off-line UPS, On-line UPS and line interactive UPS systems.