无刷直流电机转矩波动的新型控制策略研究

在介绍无刷直流电机的优点及其应用领域的基础上，建立了电机的基本数学模型，并且阐述了其电磁转矩波动对电机运行中性能的影响，重点从理想反电动势无刷直流电机和非理想反电动势无刷直流电机两种情况下分析电磁转矩波动的因素，并采用相对的控制策略来控制电磁转矩波动；提前角开通换相法与电流控制相结合的控制策略，最后，利用MATLAB仿真软件组建了无刷直流电机的仿真模型，仿真实验结果验证了所提出的转矩波动控制策略的合理性和正确性。

The Research of A Novel Control Strategy on Torque Ripple for Brushless Direct Current Motor

The advantage and application area of Brushless Direct Current Motor（BLDCM） was described, the relative mathematic model was built and the effect of electromagnetic torque ripple on the performance of BLDCM was elaborat- ed. The paper discussed factors that affected the torque ripple from the case of the ideal back-EMF and non-ideal back-EMF for BLDCM, then the relevant control strategy are put forward to minimize the torque ripple. The strategy com- bines the advanced commutation with the current control to minimize the torque ripple caused by non-ideal back-EMF. Finally, the paper built simulation model for BLDCM by using software MATLAB according to the proposed control strat- egy targeted at torque ripple, the experimental simulation results show that the proposed control strategy for reducing torque ripple is correct and reasonable.