论文部分内容阅读
本文详细介绍了一种基于DSP的全数字主轴电机变频器的设计方案,并且给出了一系列的优化策略以提高系统性能。为了保证主轴电机响应的快速性和运转的平稳性,系统采用了间接矢量控制策略,考虑到该控制策略对于电机参数有一定的依赖性,因此采用离线辨识的方法来获取控制所需的电机参数;为了便于全数字化系统的实现,以及提高母线电压的利用率,系统采用了改进的空间矢量脉宽调制策略;为了提高主轴电机在弱磁区的带载能力,以及延长主轴电机恒功率运转的区间,系统采用了电压最大化利用的优化弱磁控制策略。最后,给出了依据本方案设计的主轴变频器的试验结果。结果证明了本方案是可行的,达到了预期目标。
In this paper, a design scheme of full digital spindle motor inverter based on DSP is introduced in detail, and a series of optimization strategies are given to improve system performance. In order to ensure the rapid response of the spindle motor and the smooth operation, the system adopts the indirect vector control strategy. Considering that the control strategy has some dependence on the motor parameters, the offline identification method is adopted to obtain the motor parameters In order to facilitate the realization of all-digital system and improve the utilization of bus voltage, the system adopts the improved space vector pulse width modulation strategy. In order to improve the carrying capacity of the spindle motor in the weak magnetic zone and extend the range of spindle motor constant power operation , The system uses the optimal voltage weakening magnetic control strategy to maximize the use of voltage. Finally, the experimental results of spindle frequency converter designed according to this scheme are given. The result proves that the scheme is feasible and achieves the expected goal.