摘要
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。
This article introduces a design scheme of digital principal axis motor inverter based on DSR A series of optimizing strategy is given to enhance the system performance. In order to ensure the fast response and reliability of principal axis motor, indirect vector control strategy is adopted in the system. Due to the dependence of the control strategy on the motor parameters, off-line identification is used to obtain the motor parameters for control. In order to implement the total digital system and enhance the usage of generatrix voltage, the improved space vector PWM strategy is adopted in the system. For the purpose of lifting the load ability in weak magnet.ism field of principal axis motor and extending the constant power running range of principal motor, the optimized weak magnetism control strategy is adopted in the system. In the end, the experimental result designed on the base of the scheme is given. The result proves the scheme and reaches the anticipated goal.
出处
《变频器世界》
2007年第6期53-56,71,共5页
The World of Inverters
关键词
全数字
主轴电机
间接矢量控制
参数辨识
SVPWM
弱磁
Total digital Principal axis motor Indirect vector control Parameter identification SVPWM Weak field.
