基于直接转矩控制的开关磁阻电机模型预测控制方法

发布时间：2018-05-17 21:06

本文选题：开关磁阻电机 + 模型预测控制　；参考：《中国电机工程学报》2017年18期

【摘要】：为抑制开关磁阻电机总输出转矩的脉动、简化控制算法,该文研究一种基于直接转矩控制电压矢量选择的模型预测控制算法。该方法继承模型预测控制逻辑简单、控制灵活的优点,利用直接转矩控制扇区划分的原理进行换相的判断使得代价函数不再复杂,利用电压矢量与扇区的对应关系简化预测控制的输入变量。新算法避免了大量重复无用的计算,也不再依赖滞环信号选择电压矢量,在控制周期固定且相对较短的同时具有较好的转矩脉动抑制效果,其他性能也有所改善,为进一步优化算法提供了可能,增强了算法的实用性。在一台三相12/8结构样机上进行仿真和实验验证,并将传统模型预测控制与直接转矩控制的仿真、实验现象与之对比。结果表明,提出的新算法达到了预期的性能。
[Abstract]:In order to reduce the ripple of the total output torque of switched reluctance motor and simplify the control algorithm, a model predictive control algorithm based on direct torque control voltage vector selection is studied in this paper. This method inherits the advantages of simple predictive control logic and flexible control. The commutation judgment based on the principle of DTC sector partition makes the cost function less complex. The input variables of predictive control are simplified by using the corresponding relation between voltage vector and sector. The new algorithm avoids a large number of redundant and useless calculations and does not rely on hysteresis signals to select voltage vectors. The proposed algorithm has better torque ripple suppression effect and other performance improvements while the control period is fixed and relatively short. It provides the possibility for further optimization and enhances the practicability of the algorithm. The simulation and experimental verification are carried out on a three-phase 12 / 8 prototype, and the simulation of traditional model predictive control and direct torque control is compared with the experimental phenomenon. The results show that the proposed algorithm achieves the expected performance.
【作者单位】：多电飞机电气系统工信部重点实验室(南京航空航天大学);
【分类号】：TM352

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