东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (1): 15-19.DOI: 10.12068/j.issn.1005-3026.2014.01.004

• 信息与控制 • 上一篇    下一篇

一种改进式无刷双馈电机三电平直接转矩控制算法

刘岩，王旭，邢岩，杨丹   

  1. (东北大学 信息科学与工程学院， 辽宁 沈阳110819)
  • 收稿日期:2013-08-07 修回日期:2013-08-07 出版日期:2014-01-15 发布日期:2013-07-09
  • 通讯作者: 刘岩
  • 作者简介:刘岩(1983-)，男，辽宁法库人，东北大学博士研究生；王旭(1956-)，男，辽宁沈阳人，东北大学教授，博士生导师.
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N100304008).

An Improved ThreeLevel Direct Torque Control Method of Brushless DoublyFed Machine

LIU Yan， WANG Xu， XING Yan， YANG Dan   

  1. School of Information Science ＆Engineering， Northeastern University， Shenyang 110819， China.
  • Received:2013-08-07 Revised:2013-08-07 Online:2014-01-15 Published:2013-07-09
  • Contact: LIU Yan
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摘要： 针对无刷双馈电机直接转矩控制算法转矩脉动和磁链脉动大的问题，基于固定合成矢量方法提出了一种改进式无刷双馈电机三电平直接转矩控制算法，增加了空间电压矢量的可选择性，使得磁链脉动和转矩脉动控制在较小的范围内.在Matlab/Simulink软件平台上搭建了无刷双馈电机三电平直接转矩控制算法模型，并对改进式三电平直接转矩算法进行了验证.实验结果表明，该算法有效地减小了磁链脉动和转矩脉动，获得了更好的磁链轨迹和转矩波形，电机转速更加稳定，同时保持直接转矩控制算法转矩响应速度快的优点，提高了控制系统的鲁棒性和动态性能.

关键词: 无刷双馈电机, 直接转矩控制, 三电平逆变器, 固定合成矢量, 转矩脉动, 磁链脉动

Abstract: To solve the problem of high amplitude ripples of stator flux linkage and torque in the traditional threelevel direct torque control(DTC) algorithm for brushless doublefed machine(BDFM)， an improved threelevel direct torque algorithm for brushless doublyfed machines based on fixed synthesizing vectors was presented. The selectivity of voltage vector was added in order to deduce the torque ripple and the flux linkage ripple. A simulation model of threelevel DTC algorithm for BDFM was established in Matlab/Simulink software environment and the effectiveness of the proposed control algorithm was testified in this model. The simulation results show that the torque ripples and the flux linkage ripples were effectively reduced， the locus of the stator flux linkage was better and the rotor speed was more stable by this improved control method. In addition， the advantage of fast torque response in the DTC algorithm was maintained. The dynamic performance and robustness was improved in this DTC system.

Key words: brushless doublyfed machine, direct torque control(DTC), threelevel inverter, fixed synthesizing vectors, torque ripples, flux linkage ripples

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