摘要
针对内置式永磁同步电机,研究了一种基于相电感的无位置传感器改进控制方法。分析了内置式永磁同步电机的相电感特性,将相电感两两作差,以此消除直流分量影响。以矢量形式表示相电感之差,相比使用arctan函数计算转子位置,利用锁相环得到转子估算位置误差更小。为得到相电感,向电机注入高频旋转电压,利用正弦函数特性提取高频响应电流幅值,避免了使用低通滤波器提取幅值产生的幅值衰减和相位滞后问题。仿真结果验证了理论分析的正确性和改进方案的有效性。
An improved position sensorless control method based on phase inductance was presented for the interior permanent magnet synchronous motors(IPMSMs).The phase inductance characteristics of the IPMSM were analyzed,and the difference between the two phase inductances was made to eliminate the influence of DC component.Compared with using arctan function to calculate rotor position,using phase locked loop(PLL)to get rotor estimated position error was smaller.In order to obtain the phase inductance,the high-frequency rotating voltage was injected into the motor,and the amplitude of high-frequency current was extracted by using the characteristics of sine function,which avoids the problem of amplitude attenuation and phase lag caused by using the low-pass filter.The simulation results verify the correctness of the theoretical analysis and the effectiveness of the proposed scheme.
作者
王志伟
邱鑫
杨建飞
窦一平
王日茗
樊温新
WANG Zhi-wei;QIU Xin;YANG Jian-fei;DOU Yi-ping;WANG Ri-ming;FAN Wen-xin(School of NARI Electric and Automation Nanjing Normal University,Nanjing 210046,China;Nanjing Institute of Intelligent High-End Equipment Industry Co.,Ltd.,Nanjing 210046,China)
出处
《微特电机》
2020年第10期58-62,共5页
Small & Special Electrical Machines
基金
国家自然科学基金项目(51407095、51607094)
江苏省自然科学基金项目(BK20151548)
六大人才高峰项目(GDZB-043)
南京市后补助计划项目(201722046)
江苏省研究生科研创新计划项目(KYCX20_1252)
江苏省研究生实践创新计划项目(SJCX20_0436,SJCX20_0433)。
关键词
内置式永磁同步电机
相电感
矢量控制
锁相环
无位置传感器控制
interior permanent magnet synchronous motor(IPMSM)
phase inductance
vector control
phase locked loop
sensorless control
