摘要
针对传统控制方法下航空辅助动力装置起动电机高速性能不足、高空起动时间过长的问题,提出一种基于电压反馈的弱磁控制策略。首先,结合APU的起动特性与永磁同步电机的物理模型,分析了传统控制策略在宽转速范围内的局限性,指出电压利用率饱和导致高速段扭矩衰减的机理。其次,设计了一种动态弱磁控制架构,该方法根据电机端电压实时调节弱磁电流分量,突破逆变器输出电压限制,扩展电机高速可控区间。此外,结合转速分段控制策略,低速段采用最大转矩电流比控制以提升起动扭矩,高速段通过弱磁维持功率输出。最后基于搭建的起动电机实验平台对所提起动控制策略的有效性进行了验证。
A weak magnetic field control strategy based on voltage feedback was proposed to solve the problems of inadequate high-speed performance and excessive high altitude starting time of the starting motor of the aviation auxiliary power unit under conventional control methods.First,combining the APU’s starting characteristics with the physical model of the permanent magnet synchronous motor,the limitation of the conventional control strategy in the wide speed range was analyzed,and the mechanism of torque attenuation in high-speed segment caused by voltage utilization saturation was pointed out.Secondly,a dynamic field weakening control architecture was designed,which adjusted the field weakening current component in real time according to the motor terminal voltage,breaked the inverter output voltage limitation,and extends the high-speed controllable range of the motor.In addition,combined with the speed segment control strategy,the low-speed segment used maximum torque to current ratio control to raise starting torque,and the high-speed segment maintains power output through weak magnetic field.Finally,the effectiveness of the proposed control strategy was verified on a 4 kW starter motor experimental platform.
作者
詹旺
罗庚
周佳乐
唐浩棋
罗克顶
ZHAN Wang;LUO Geng;ZHOU Jiale;TANG Haoqi;LUO Keding(National Engineering Research Center for Small and Special Precision Motors,Guizhou Aerospace Linquan Motor Co.,LTD.,Guiyang 550081,China)
出处
《微电机》
2026年第1期38-42,共5页
Micromotors
关键词
航空辅助动力装置
起动电机
电压反馈
弱磁控制
aviation auxiliary power unit
starting motor
voltage feedback
flux weakening control
