摘要
如何提高永磁同步电机恒功率调速比的问题是当前研究的重点。本文在分析永磁同步电机(PMSM)数学模型的基础上,通过阐述弱磁调速的控制原理,提出了一种基于电流调节的PMSM定子磁链弱磁控制算法,有效地拓宽了恒功率调速比。并在Matlab/Simulink环境下,构建了永磁同步电机弱磁控制系统的速度和电流双闭环仿真模型。仿真结果证明了该控制系统模型的有效性,恒功率调速比达到了4:1,为永磁同步电机弱磁调速控制系统的设计和调试提供了理论基础。
How to improve the speed ratio under constant power becomes a hot topic. In this paper, oasea on the mathematical model of the permanent magnet synchronous motor （PMSM） , through discussing the principle of Flux-weakening control, it is proposed that a novel method for PMSM control system based on current tracking, which effectively broadens the speed ratio under constant power. In Matlab/Simulink, two control loops are used to build up the control system ,which are the inner current-loop and the outer speed-loop. The reasonability and validity of this method is testified by the simulation results. And the result indicates that the speed ratio could reach 4：1. This provide a theory foundation for the further research on PMSM control system.
出处
《船电技术》
2010年第6期14-17,22,共5页
Marine Electric & Electronic Engineering
关键词
永磁同步电机
弱磁控制
电流跟踪算法
仿真建模
PMSM
flux-weakening control
current tracking control
modeling and simulation
