摘要
无刷双馈电机是一种新型电机,具有复杂控制参数的特点,当采用矢量控制算法时,动态性能效果不好,研究无刷双馈电机三电平直接转矩控制算法,针对三电平直接转矩算法磁链脉动和转矩脉动大的缺点设计一种基于48个固定矢量的固定合成矢量方法,在Matlab/Simulink软件中建立仿真模型并进行了验证。相对于传统的两电平直接转矩控制算法,增加了电压矢量的可选择性,并且有效地减小了转矩脉动,获得了更好的磁链轨迹。
An improved three-level direct torque algorithm for brushless doubly-fed machines is presented. It aims to reduce the torque and flux ripples in a brushless doubly-fed machine. This method is based on 48 fixed synthesizing vectors and has been implemented in the brushless doubly-fed machine. Compared with the traditional two-level direct torque control algorithm,this new method broadens the selection range on voltage vectors. It also effectively reduces the torque ripple and gets better magnetic chain track. In addition,this algorithm improves the dynamic performance and robustness both for the brushless doubly-fed machine and its control system. The validation of the proposed control algorithm has been approved with simulation and experimental results.
出处
《电气传动》
北大核心
2013年第S1期16-19,共4页
Electric Drive
基金
国家自然科学基金资助项目(50477015)
中央高校基础科研经费(N100304008)
关键词
无刷双馈电机
直接转矩控制
三电平
固定矢量合成
brushless doubly-fed machine
direct torque control
three-level
synthesizing vector
