基于正常解耦变换的双三相永磁同步电机缺相容错控制策略

发布时间：2018-07-09 23:39

本文选题：双三相永磁同步电机 + 容错　；参考：《电工技术学报》2017年03期

【摘要】：常用的多相电机缺相容错控制策略需要建立缺相后的降维数学模型,双三相电机缺相时具有两种不同中性点连接方式,每种情况对应不同的解耦变换阵,需要分别进行建模。根据双三相电机开路故障时,如果保持系统解耦变换阵不变,则电压方程、磁链方程和转矩方程不会受到影响的特点,构建了一种基于正常解耦变换阵的缺相容错控制策略,该策略适用于不同中性点连接方式,只需要改变谐波子空间参考电流即可。分别对定子铜耗最小和最大转矩输出两种优化电流工作方式进行分析,并分析了3次谐波磁动势对电磁转矩的影响。对一相开路和正交两相开路情况分别进行理论分析和实验验证,证明了所提控制策略的有效性和可行性。
[Abstract]:The commonly used fault-tolerant control strategy for multi-phase motor needs to establish a dimensionally reduced mathematical model after phase loss. There are two different neutral connection modes in the absence of phase, and each case corresponds to a different decoupling transformation matrix, which needs to be modeled separately. According to the characteristics that the voltage equation, flux equation and torque equation will not be affected if the decoupling transformation matrix is kept unchanged, a fault-tolerant control strategy based on the normal decoupling transformation matrix is proposed. This strategy is suitable for different neutral connection modes, only need to change the harmonic subspace reference current. The two optimal current working modes of minimum copper loss and maximum torque output of stator are analyzed, and the influence of the third harmonic magnetodynamic force on electromagnetic torque is analyzed. The theoretical analysis and experimental verification of one-phase open circuit and orthogonal two-phase open circuit respectively prove the effectiveness and feasibility of the proposed control strategy.
【作者单位】：哈尔滨工业大学电气工程及自动化学院;
【基金】：国家自然科学基金面上项目(51177026) 高等学校博士学科点专项科研基金项目(20132302120005)资助
【分类号】：TM341

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