MATEC Web Conf.
Volume 256, 2019The 5th International Conference on Mechatronics and Mechanical Engineering (ICMME 2018)
|Number of page(s)||6|
|Section||Electronics and Electrical Engineering|
|Published online||23 January 2019|
Current Decoupling and Controller Design for Induction Motors Based on Neutral Delay System
School of Automation, University of Science and Technology Beijing, Beijing, 100083, China
In the AC power transmission system, in order to reduce the loss of switching devices, the switching frequency of the traction converter is generally low, and a large digital control delay will occur, which will aggravate the cross coupling between the excitation component and the torque component of the stator current of the motor, resulting in poor system performance. In order to solve this problem, based on the theory of neutral time-delay system and the rotor flux-oriented model of induction motors, the mathematical model of neutral-type time-delay system for induction motors is established, and a neutral current controller with current decoupling control is designed. The decoupling control of the stator current reduces the influence of the digital control delay on the system performance. The simulation results show that the induction motor system with a neutral current controller has the advantages of small coupling, rapid response, and strong robustness. Explains the feasibility of the designed current controller.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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