基于无位置传感器BLDCM转矩脉动抑制的研究
Research for BLDCM torque ripple suppression based on position sensorless
-
摘要: 针对无刷直流电机(BLDCM)因其本身结构特点和传统调制方式而产生转矩脉动,导致应用场合受到其限制,尤其是无法应用于高精度伺服系统的问题,提出了在无位置传感器的前提下,用PWM-ON-PWM调制方式和BUCK变换器相结合的控制方式消除或者抑制转矩脉动.仿真结果表明,该方法不仅可以完全消除电机运行过程中关断相的续流,从而消除了非换相转矩脉动,而且对换相转矩脉动也有一定的改善.
-
关键词:
- 无刷直流电机 /
- 转矩脉动抑制 /
- 无位置传感器 /
- PWM-ON-PWM调制 /
- BUCK变换器
Abstract: Brushless DC motor(BLDCM) has the problem of torque ripple due to its structural characteristics and traditional modulation mode,which limits its application range and especially in high precision servo system. A control method that combines the PWM-ON-PWM modulation mode with BUCK converter basis on position sensorless was proposed, to eliminate or suppress the torque ripple. Simulink results showed that the method can not noly completely eliminate the freewheel current of silent phase to eliminate the non-commutation torque ripple, but also decrease the commutation torque ripple in the running process of the motor. -
点击查看大图
计量
- PDF下载量: 26
- 文章访问数: 869
- 引证文献数: 0
下载:
