永磁同步电动机自适应弱磁控制策略  

Research of Adaptive Flux Weakening Strategy of Permanent Magnet Synchronous Motor

作　　者：施新华[1] 周芝峰[1] 

机构地区：[1]上海电机学院工业技术中心,上海201306

出　　处：《实验室研究与探索》2017年第5期40-43,共4页Research and Exploration In Laboratory

基　　金：上海市教委重点学科资助项目(J510901)

摘　　要：以表贴式永磁同步电动机为研究对象,分析了传统直流母线电压反馈弱磁控制算法原理和实现方式。针对传统直流母线电压反馈弱磁控制系统的滞后性和控制量由零开始缓慢增长等问题,提出在PI控制基础之上,通过对定子交轴电流分量i_q进行前馈控制,将得到的直轴电流分量i_d限定的最大值作为预给定值,在不改变传统电压反馈控制结构的基础上,更快地获得准确的i_d取值,实现快速自适应控制。通过Matlab/Simulink仿真和借助dSPACE半实物实时仿真系统实验表明,电流自适应弱磁控制策略使得系统具有更好的转速动态稳定性以及更强的带负载能力。The surface permanent magnet synchronous motor was taken as object,the traditional DC bus voltage feedback flux weakening control algorithm principle and implement method were studied. In order to solve the problems of in the flux weakening region of PMSM,the oscillation of speed in high speed state,and not good at load ability,an improved adaptive flux weakening control method was proposed. The limited maximum value of the current component id was calculated by the current component iq through feed-forward control based on PI control,and was used as the given value. The method can increase the speed of system response,and get the accurate id much more quickly,achieve rapid adaptive control. The simulation and experiments based on Matlab/Simulink and dSPACE showed that the improved adaptive flux weakening control strategy can effectively reduce the oscillation of speed in steady state,and improve the load ability of PMSM in high speed.

关 键 词：弱磁控制 前馈控制 永磁同步电动机 自适应控制 

分 类 号：TM341[电气工程—电机] TM351