基于FFT的高频信号注入法在永磁同步电机中的应用  

Application of High Frequency Signal Injection Method Based on FFT in Permanent Magnet Synchronous Motor

作　　者：邓日阳 胡业林[1] DENG Riyang;HU Yelin(School of Electrical and Information Engineering,Anhui University of Technology,Huainan,Anhui 232000,China)

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232000

出　　处：《自动化应用》2024年第4期127-130,共4页Automation Application

摘　　要：为解决静止和低速问题,许多学者提出了高频注入的方案,通过注入一个已知的高频信号,再提取电流响应中的高频成分,得到关于转子角度信息的变量,再从中求解转子位置。传统的高频注入存在磁极难以识别的问题。为此,提出一种基于快速傅里叶变换(FFT)的信号提取方法,通过傅里叶变化即可求出转子位置信息,省去大量滤波器的使用。In order to solve the problems of stationary and low-speed,many Therefore scholars have proposed a high-frequency injection scheme.By injecting a known high-frequency signal and extracting the high-frequency component of the current response,variables related to the rotor angle information are obtained,and then the rotor position is solved from it.Traditional high-frequency injection faces the problem of difficult identification of magnetic poles.Therefore,a signal extraction method based on fast Fourier transform(FFT)is proposed,which can obtain rotor position information through Fourier transform,eliminating the need for a large number of filters.

关 键 词：快速傅里叶变换 高频注入 永磁同步电机 转子位置提取 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]