摘要
针对一种基于座圈电机的直传式炮控系统中SVPWM调制死区导致逆变器输出电压发生畸变,从而引起电流和转矩波动,影响系统低速平稳性的问题,首先分析了座圈电机的设计与控制模型;然后从分析逆变器单相桥臂死区原理入手,讨论了电压矢量空间中驱动死区效应及其与三相电流方向的关系,并据此建立了死区效应的等效电压扰动形式;在此基础上提出了基于自抗扰技术的死区补偿控制策略。仿真与试验表明,该方法能够很好的抑制死区影响,有效减小电流和转矩波动,同时其算法简洁,易于工程实现。
In a direct transmission gun control system based on turret seat ring motor,the SVPWM modu-lation dead time causes the fluctuation of current and torque,which affects the low-speed stability.Aiming at the problems above,the design and the control model of turret seat ring motor were analyzed firstly.And then,the principle of dead time in single-phase bridge inverter,the effects of dead time in voltage vector space and its relationship with direction of three-phase current were discussed.On the basis of that,the e-quivalent voltage disturbance of dead time was built up and the compensation control method based on ac-tive disturbance rejection control technique was proposed.The simulation and test result shows that the in-fluences caused by the dead time were restrained and the fluctuation of current and torque were reduced soundly.And the method is simple and prone to realize in engineering.
出处
《电机与控制学报》
EI
CSCD
北大核心
2016年第5期111-118,共8页
Electric Machines and Control
基金
国防"十二五"预研项目(40401020103
40405070201)
军队重点科研项目(2011ZB06)
关键词
座圈电机
炮控系统
驱动死区
自抗扰控制
turret seat ring motor
gun control system
drive dead time
active disturbance rejection con-trol
