学术论文

      采用坐标变换的无刷直流电机换相过程分析及减小换相转矩脉动的方法

      The Commutation Process Analysis and the Method Reducing Commutation Torque Ripple of Brushless DC Motors Based on the Coordinate Transformation

      摘要:
      该文首先介绍了无刷直流电机的数学模型.利用坐标变换,在两相αβ静止坐标系下分析了无刷直流电机的换相过程.得到了两相αβ静止坐标系下无刷直流电机换相时的能量转换关系,推导出换相过程无转矩脉动的约束条件,得到最短换相时间的无换相转矩脉动的调制方法.两相αβ静止坐标系下将换相过程的控制转换为两个分量的控制,一个用来控制转矩,另一个用来控制换相时间.避免了求解其间复杂的电路过程,使得物理概念更明确,简单清晰地得到换相过程中无转矩脉动的约束条件,为无刷直流电机换相转矩脉动研究找到另一新的思路.最后通过实验验证了该方法的可行性和有效性.
      Abstract:
      Firstly the mathematical model of brushless DC motors (BLDCM) is introduced in this paper. The commutation process of brushless DC motors is analyzed in the two-phase αβ stationary coordinate by using coordinate transformation. The energy conversion relationship of brushless DC motors is obtained in the two-phase αβ stationary coordinate, the restrictive condition for reducing the torque ripple is derived during the commutation process in the αβ coordinate. The modulation method for shortest commutation time without the commutation torque ripple is obtained. The commutation is transferred the two components control, one is applied to control the toque and the other is used to control the commutation time. The complicated circuit equations during the commutation are avoided to solve, obtaining the clearer physical concept and the restriction condition with no torque ripple during the commutation. Find another new idea to study the commutation torque ripple of the brushless DC motor. Finally, the feasibility and effectiveness of the method are verified by experiments.
      作者: 姜卫东 [1] 胡杨 [1] 黄辉 [1] 张忠 [2]
      Author: JIANG Weidong [1] HU Yang [1] HUANG Hui [1] ZHANG Zhong [2]
      作者单位: 合肥工业大学电气与自动化工程学院,安徽省合肥市,230009 台州市金宇机电有限公司,浙江省台州市,318020
      刊 名: 中国电机工程学报 ISTICEIPKU
      年,卷(期): 2015, 35(24)
      分类号: TM351
      在线出版日期: 2016年2月25日
      基金项目: 国家自然科学基金项目,国家科技支撑计划(2012BAF01B05). Project Supported by National Natural Science Foundation of China,National Science and Technology Support Program