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Research on Dead-zone Compensation of AC Servo System based on voltage feed forward decoupling and FOC

机译:基于电压前馈解耦和FOC的交流伺服系统死区补偿研究

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摘要

Martwa strefa czasowa przekształtnika serwomechanizmu ze sterowaniem FOC powoduje zniekształcenie prądu I pogorszenie możliwości sterowania. W artykule zaprezentowano ulepszona metodę kompensacji strefy martwej. Najpierw prądy w osiach d i q silnika synchronicznego są kompletnie odsprzężone, następnie jest określana zależność między kątem elektrycznym a kierunkami prądów trójfazowych. Wtedy kompensacja strefy martwej jest efektywna.%For the problem that the dead-zone time of the inverter of field-oriented control (FOC) alternating current (AC) servo leads to current distortion, torque impulse and degrades the control performance while the traditional compensation methods ignore incomplete decoupling and leads to compensation error, this paper presents an improved dead-time compensation method. First, the d and q-axis current of permanent magnet synchronous motor (PMSM) are completely decoupled, then the relationship of the electrical angle and the direction of the three-phase current is deduced by the principle of FOC. With the accurate direction of the three-phase, the dead-time compensation can be achieved effectively. The simulation results and analysis show that the wave of current is normal after compensation and the output is steady at low speed, which demonstrates the good effect of the proposed compensation method.
机译:具有FOC控制的伺服转换器的死区会导致电流失真和控制能力下降。本文提出了一种改进的死区补偿方法。首先,同步电动机的d和q轴上的电流完全解耦,然后确定电角与三相电流方向之间的关系。则死区补偿是有效的。%对于传统的补偿方式,磁场定向控制(FOC)交流伺服(AC)伺服逆变器的死区时间会导致电流失真,转矩脉冲并降低控制性能。该方法忽略了不完全的解耦,导致补偿误差,本文提出了一种改进的空载时间补偿方法。首先,永磁同步电动机(PMSM)的d和q轴电流完全解耦,然后根据FOC原理推导电角度与三相电流方向的关系。利用三相的正确方向,可以有效地实现空载时间补偿。仿真结果和分析表明,补偿后电流波形正常,低速时输出稳定,证明了该补偿方法的良好效果。

著录项

  • 来源
    《Przeglad Elektrotechniczny》 |2012年第7a期|p.86-89|共4页
  • 作者单位

    School of Energy Science and Engineering, University of Electronic Science and Technology of China;

    School of Energy Science and Engineering, University of Electronic Science and Technology of China;

    School of Energy Science and Engineering, University of Electronic Science and Technology of China;

    School of Energy Science and Engineering, University of Electronic Science and Technology of China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dead-zone compensation; voltage feed forward decoupling; PMSM; FOC;

    机译:死区补偿;电压前馈去耦;PMSM;FOC;

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