无位置传感器无刷直流电机三闭环控制系统

发布时间：2018-06-11 10:20

本文选题：无位置传感器 + 无刷直流电机　；参考：《电机与控制学报》2017年04期

【摘要】：为了减小无位置传感器无刷直流电机的转矩脉动,在传统的转速电流双闭环控制的基础上,增加了功率抑制闭环,构成三闭环控制系统,针对换相转矩脉动提出了分阶段控制策略,有效减小了电机换相转矩脉动和母线换相电流脉动。首先建立无位置传感器无刷直流电机模型,给出功率抑制闭环的控制方法以及数学公式。然后建立三闭环控制模型,通过仿真结果验证了理论分析的结论。最后通过实验验证此控制策略可以将样机转矩抑制在额定转矩附近波动,无明显换相转矩脉动产生。结果表明,与传统的控制方法相比,提出的方法抑制换相转矩脉动的效果更佳。
[Abstract]:In order to reduce the torque ripple of the sensorless brushless DC motor, on the basis of the traditional double closed loop control of rotating speed and current, the closed loop of power suppression is added and the three closed loop control system is formed. A phased control strategy is proposed for the commutation torque ripple, which effectively reduces the torque ripple of the commutation of the electric machine and the pulsation of the commutation current of the bus. First, a position sensorless brushless DC motor model is set up, the control method and the mathematical formula of the closed loop power suppression are given. Then the three closed loop control model is established. The conclusion of the theoretical analysis is verified by the simulation results. Finally, the experimental results show that the control strategy can suppress the torque of the prototype near the rated torque and have no obvious change. The results show that compared with the traditional control method, the proposed method has better effect on suppressing commutation torque ripple.
【作者单位】：安徽大学高节能电机及控制技术国家地方联合工程实验室;合肥工业大学电气与自动化工程学院;
【基金】：安徽省自然科学基金(1508085ME89) 安徽大学高节能电机及控制技术国家地方联合工程实验室开放课题基金(KFKT201602)
【分类号】：TM33;TP273

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