摘要
针对无位置传感器内嵌式永磁同步电机(Interior permanent magnet synchronous motor, IPMSM)速度控制问题,研究了一种宽调速范围的估计转子位置和速度的混合控制策略。在电机静止情况下,通过基于脉振高频电压和定向脉冲电压矢量的两步注入法估计转子初始位置。电机启动后,低速段和中高速段分别采用基于龙伯格观测器(Luenberger observer, LBG)的脉振高频电压注入法和扩展电动势法(Extended electromotive force, eEMF)观测转子位置和速度。在切换区域,釆用加权方式实现两种估计方法的平滑过渡。最后通过IPMSM无位置传感器矢量控制实验系统验证了混合控制策略的有效性。
A hybrid control is proposed to estimate rotor position and speed in wide speed range operation in order to solve the speed control problem of position sensorless in interior permanent magnet synchronous (IPMSM). The initial position of the rotor is estimated by two steps included the high-frequency voltage injection and the directional pulse voltage vector injection when the motor is stationary. After the motor is started, the high-frequency voltage inject motor and extended electromotive force(eEMF) method based on Luenberger observer(LBG) is used to observe the rotor position and speed at low speed and higher speed operation. In the switching area, a weighted method is adopted to achieve the smooth transition of the two estimation methods. Experimental results demonstrate the feasibility of the hybrid control strategy through a position sensorless IPMSM vector controlled system.
作者
徐建明
徐文龙
毛杰
XU Jianming;XU Wenlong;MAO Jie(College of Information Engineering,Zhejiang University of Technology,Hangzhou 310023,China)
出处
《浙江工业大学学报》
CAS
北大核心
2020年第1期1-6,共6页
Journal of Zhejiang University of Technology
基金
国家自然科学基金面上项目(61374103)
浙江省自然科学基金重点项目(LZ15030003)
