Volume 36, Number 5, October 2018
|Page(s)||970 - 977|
|Published online||17 December 2018|
Study on Magnetic Flux Weakening Control Strategy of Interior Permanent Magnet Synchronous Motor
College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan
2 Dingzhou Power Supply Company of State Grid, Dingzhou 073000, China
3 Maintenance Branch of Shanxi Electric Power Company, Taiyuan 030000, China
When the maximum ratio of torque to current strategy is used for IPMSM flux weakening speed regulation, it is needed to solve nonlinear High-Order equations determining the direct and quadrature axis current given value. Facing this problem, the paper used the curve fitting and obtained the given current, improved the control accuracy of the system. At the same time, in the weak magnetic high speed zone, proposed a new over-modulation control algorithm, which through the optimization of voltage vector and phase, achieved a natural transition of different modulation region, increased the output voltage of the inverter, and enhanced the stator voltage and output torque when motor runs at a certain speed given value, expanded steady weak magnetic region of IPMSM when the load torque is certain.
Key words: IPMSM / flux weakening speed regulation / curve fitting / over-modulation / controller / design of experiment
关键字 : 内置式永磁同步电动机 / 弱磁调速 / 曲线拟合 / 过调制 / 控制器 / 实验设计
© 2018 Journal of Northwestern Polytechnical University. All rights reserved.
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