无刷直流励磁同步电机启动控制策略研究

Research on the Starting Control Strategy of Brushless Synchronous Motor with DC Excitation

针对无刷直流励磁同步电机启动过程的特殊性,提出了一种新的高性能启动控制方法。在分析同步电机异步启动等效电路模型的基础上,建立了不同速度段矢量控制模型(异步启动和整步运行矢量控制模型),并提出了不同控制模型的平滑切换控制策略,实现整个启动和整步运行阶段的高性能矢量控制。实验结果表明上述控制策略具有有效性,并可实现无刷直流励磁同步电机带载快速、平稳的启动,具有较大的实用价值。

Aiming at the particularity of the starting process of brushless synchronous motor with DC excitation,a new high-performance starting control method was proposed.On the basis of analyzing the equivalent circuit model of synchronous motor asynchronous in starting process,a vector control model of different speed sections,which including vector control model of asynchronous starting and synchronization running was established.A smooth switching control strategy with different control models was also proposed to complete the high performance vector control in the whole starting and running process.The experiment results indicate that the control strategy is effective and can realize fast and stable starting of brushless synchronous motor with DC excitation,and it has great practical value.