摘要
永磁同步电机运行过程中失电后,常因自身惯性或外界推动而处于高速旋转状态。若要带速重投,则需短时间内完成初始位置/转速观测。现有零电压矢量脉冲法的脉冲宽度和脉冲间隔不变,常使观测误差增大,严重时可能引起过电流。为此,研究一种自适应零电压矢量三脉冲法,可以根据零电压矢量脉冲所激励的电流矢量幅值自适应调节脉冲宽度,根据初始转速预估值自适应二次修正脉冲间隔,从而针对不同的电机参数或运行状态自动施加合理的零电压矢量脉冲。仿真结果表明,所研究的自适应零电压矢量三脉冲法脉冲宽度及脉冲间隔调节效果好,初始位置/转速观测和带速重投的可靠性高。
Permanent magnet synchronous motor(PMSM)is often operates at high speed due to its inertia or external propulsion when the power supply is interrupted during operation.It is necessary to estimate the initial position/speed before flying start.The fixed action time and interval time of the traditional zero voltage vector pulse method often reduce the estimation accuracy and even cause overcurrent.Therefore,an adaptive triple zero voltage vector pulses method is studied in this paper,which can adaptively adjust the action time according to the amplitude of the current vector excited by the zero voltage vector pulses and adjust the interval time according to the initial speed estimation twice successively,so as to automatically apply the reasonable zero voltage vector pulses for different PMSM parameters or operating states.The simulation results show that the proposed adaptive triple zero voltage vector pulses method can adaptively adjust the reasonable action time and interval time,so as to improve the reliability of initial position/speed estimation and flying start.
作者
李润东
李海龙
宁文波
王硕
袁义智
张国强
LI Rundong;LI Hailong;NING Wenbo;WANG Shuo;YUAN Yizhi;ZHANG Guoqiang(Dongying Power Supply Company,State Grid Shandong Electric Power Company,Dongying Shandong 257091;School of Electrical Engineering&Automation,Harbin Institute of Technology,Harbin Hei Longjiang 150001)
出处
《东北电力大学学报》
2024年第3期29-35,共7页
Journal of Northeast Electric Power University
基金
黑龙江省自然科学基金(YQ2023E016)。
关键词
永磁同步电机
带速重投
零电压矢量脉冲法
自适应调节
初始位置/转速观测
permanent magnet synchronous motor(PMSM)
flying start
zero voltage vector pulse method
adaptive adjustment
initial position/speed estimation
