传统高频脉振电压注入法采用基于带通滤波器与低通滤波器结合的策略,实现位置误差信号提取。但该策略的不足在于无法同时兼顾位置观测闭环的滤波精度与动态性能。为此,提出一种基于双频陷波器(dual frequency notch filter,DFNF)级联低...传统高频脉振电压注入法采用基于带通滤波器与低通滤波器结合的策略,实现位置误差信号提取。但该策略的不足在于无法同时兼顾位置观测闭环的滤波精度与动态性能。为此,提出一种基于双频陷波器(dual frequency notch filter,DFNF)级联低通滤波器的改进型位置误差信号提取策略。该策略通过提高环路增益实现带宽扩展,再利用DFNF加强对二次注入谐波的抑制能力,使位置观测环同时具备高带宽与强滤波特性。首先,对位置观测等效闭环进行建模,并利用闭环传递函数幅频特性分析传统位置误差信号提取策略存在的问题;然后,对改进型位置误差信号提取策略的原理进行介绍,并对比2种位置误差信号提取策略的性能;最后,基于RT-LAB实验平台,对2种位置误差信号提取策略的位置辨识效果进行对比验证。展开更多
This paper presents the developments of sensorless control of interior permanent magnet synchronous machine(IPMSM)for last 10 years,which could be divided into the past and the present for each 5 years.Several popular...This paper presents the developments of sensorless control of interior permanent magnet synchronous machine(IPMSM)for last 10 years,which could be divided into the past and the present for each 5 years.Several popular methods developed for last 10 years would be described and evaluated,and the limitations with the methods are discussed.In the past a concept extended EMF(EEMF)was introduced and it can model IPMSM as a non-salient motor,meaning that the representation of IPMSM in the estimated rotor reference frame would be much simpler and accurate.However,because it still relied on back EMF,standstill operation was impossible.And,the position control of IPMSM could not be achieved with EEMF concept.For sensorless drive,the high-frequency signal injection method exploiting inherent saliency of IPMSM has been continuously developed for last 10 years and applied to various industry fields,where torque control at standstill is essential.Its performance has been improved but there are still many problems to be solved.In the present,the square-wave signal injection at estimated d-axis has improved the control performance conspicuously.However,there are strong demands to improve the control performance of sensorless drive,yet.Based on the problems in the present,in this paper the possible developments of sensorless drive of IPMSM in next 5 years are enlightened as the future of sensorless control.展开更多
文摘传统高频脉振电压注入法采用基于带通滤波器与低通滤波器结合的策略,实现位置误差信号提取。但该策略的不足在于无法同时兼顾位置观测闭环的滤波精度与动态性能。为此,提出一种基于双频陷波器(dual frequency notch filter,DFNF)级联低通滤波器的改进型位置误差信号提取策略。该策略通过提高环路增益实现带宽扩展,再利用DFNF加强对二次注入谐波的抑制能力,使位置观测环同时具备高带宽与强滤波特性。首先,对位置观测等效闭环进行建模,并利用闭环传递函数幅频特性分析传统位置误差信号提取策略存在的问题;然后,对改进型位置误差信号提取策略的原理进行介绍,并对比2种位置误差信号提取策略的性能;最后,基于RT-LAB实验平台,对2种位置误差信号提取策略的位置辨识效果进行对比验证。
文摘This paper presents the developments of sensorless control of interior permanent magnet synchronous machine(IPMSM)for last 10 years,which could be divided into the past and the present for each 5 years.Several popular methods developed for last 10 years would be described and evaluated,and the limitations with the methods are discussed.In the past a concept extended EMF(EEMF)was introduced and it can model IPMSM as a non-salient motor,meaning that the representation of IPMSM in the estimated rotor reference frame would be much simpler and accurate.However,because it still relied on back EMF,standstill operation was impossible.And,the position control of IPMSM could not be achieved with EEMF concept.For sensorless drive,the high-frequency signal injection method exploiting inherent saliency of IPMSM has been continuously developed for last 10 years and applied to various industry fields,where torque control at standstill is essential.Its performance has been improved but there are still many problems to be solved.In the present,the square-wave signal injection at estimated d-axis has improved the control performance conspicuously.However,there are strong demands to improve the control performance of sensorless drive,yet.Based on the problems in the present,in this paper the possible developments of sensorless drive of IPMSM in next 5 years are enlightened as the future of sensorless control.
