多扇区插值预测算法的BLDCM转矩脉动抑制策略  

Multi-sector Prediction Interpolation Function for BLDC Motor Torque Ripple Control

作　　者：王雨凝 王博[1] 江秀红[1] WANG Yuning;WANG Bo;JIANG Xiuhong(School of Electronic Information,Shenyang Aerospace University,Shenyang 110136,China)

机构地区：[1]沈阳航空航天大学电子信息学院,沈阳110136

出　　处：《微电机》2024年第7期36-42,共7页Micromotors

基　　金：辽宁省教育厅重点攻关项目(JYT2020160)。

摘　　要：无刷直流电机具有高可靠性、高效率等优点,但由于自身结构特点以及驱动特点,在运行过程中会产生较大的转矩脉动。针对该运行问题,构造了一种新型电压矢量扇区划分开关表,用于无刷直流电机的直接转矩控制。区别于传统的直接转矩控制只对电机电压矢量进行六扇区划分,提出将传统的扇区开关表扩展为十二扇区的方法。该策略通过将电压空间扩展为十二个扇区后,对应的有效电压矢量也增加至十二个,这使得转矩在每个扇区内可以选择更精准的电压矢量。改善了换相区域内电压矢量选择不准确所造成的转矩脉动这一问题,并通过生成三维插值特性曲线验证。最终实现电机控制性能的提高,达到高效率的直接转矩控制策略目的。最后,将该方案在仿真软件上进行测试,结果验证了所提出策略的准确性、有效性。The Brushless DC Motor(BLDCM)is broadly used due to its high reliability and efficiency.However,there will be high torque ripple because of its own structure and drive characteristics in the process of operation.Focused on the problem,a novel multi-sector subdivision look-up-table function for the voltage vector was proposed,which was used for the Direct Torque Control(DTC)of BLDCM.Firstly,in this paper,based on the traditional DTC that only divides the voltage vector into six sectors,the novel DTC strategy created a look-up-table of twelve-sectors.Secondly,on the basis of twelve sectors,the effective voltage vectors increase to twelve and thus,the torque of BLDCM was able to select more accurate voltage vectors in each sector.Finally,the method restrained the torque ripple of BLDCM during the period of commutation and increased efficiency of the direct torque control scheme based on the 3D interpolation characteristic curves.The proposed control technology was verified by the simulation results.

关 键 词：BLDCM DTC 转矩脉动抑制 扇区划分 多维插值 

分 类 号：TM361[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]