能量回馈型高精度加载电机驱动器拓扑研究

为了减小电动负载模拟器的输出转矩脉动,提高其加载精度,多电平结构被越来越多地应用于加载电机驱动器拓扑.为进一步提高系统频宽,回收加载电机的制动能量,提出了一种基于多电平变换技术、能量可双向流动的驱动器拓扑结构,并对其工作原理与控制方法进行了详细分析.仿真和实验结果表明,提出的新型驱动器加载精度较高,并且在无扰跟踪正弦转矩加载实验中,双十指标下频宽达10Hz,较之传统驱动器在加载性能上有较大幅度的提高.

Research on Energy Feedback High-Accuracy Torque-Servo System Motor Driver

Multilevel configuration is more and more used in loading motor driver topology to reduce the output torque ripple and to improve the loading precision in electric loading simulation system.For obtaining a higher frequency-width and regenerating the braking energy of loading motor system,a new topology for loading motor driver based on multilevel inverting technology is put forward,and an in-depth analysis of its operating principle and control strategy is made.The simulative and the experimental results indicate that the new driver proposed in this paper has a higher precision,and also achieve a 10Hz in its loading frequency-width in sine tracking without interference,which is a significant development in loading capability compared with the conventional driver.