基于多级滞环控制器的永磁同步电机直接转矩控制

发布时间：2018-05-09 02:29

本文选题：永磁同步电机 + 直接转矩控制　；参考：《中国电机工程学报》2017年14期

【摘要】：该文提出一种多级滞环控制器与基于离散占空比的扩展开关表相结合的新型直接转矩控制策略。该策略可以在保证系统具有快速响应能力的前提下有效地降低磁链和转矩波动。所提出的多级滞环控制器将转矩、磁链误差大小划分成若干等级,从而能够更详尽的描述系统需要增、减转矩或磁链的程度。文中对占空比进行离散化处理,在此基础上生成不同幅值、不同相角的矢量作为备选矢量,丰富和扩展了传统DTC开关表。此外,本文采用倒三角矩阵存储备选矢量集合,并采用"二次寻优"的方法准确、快速地从扩展开关表中选出目标矢量。最后对本文算法的可行性与有效性进行了实验验证。
[Abstract]:In this paper, a novel direct torque control strategy based on multistage hysteresis controller and extended switch table based on discrete duty cycle is proposed. This strategy can effectively reduce flux chain and torque ripple while ensuring the fast response ability of the system. The proposed multistage hysteresis controller divides the torque and flux error into several classes, which can describe in detail the degree of torque or flux chain that the system needs to increase or decrease. In this paper, the duty cycle is discretized, on the basis of which different amplitudes and different phase angles are generated as alternative vectors, which enriches and extends the traditional DTC switching table. In addition, the inverted triangular matrix is used to store the set of alternative vectors, and the method of "quadratic optimization" is used to select the target vectors quickly from the extended switch table. Finally, the feasibility and effectiveness of the algorithm are verified by experiments.
【作者单位】：天津大学电气自动化与信息工程学院;天津市电机系统先进设计与智能控制技术工程中心;
【基金】：国家自然科学基金项目(51407127) 国家重点基础研究发展计划项目(973计划)(2013CB 035600)~~
【分类号】：TM341;TP273

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