基于SMO的PMSM无速度传感器调速系统

发布时间：2018-03-23 15:42

本文选题：永磁同步电机　切入点：无速度　出处：《广西大学学报(自然科学版)》2014年06期

【摘要】：为了进一步降低永磁同步电机调速系统的成本,提高系统的可靠性,设计了一种基于滑模观测器(SMO)理论的永磁同步电机(PMSM)无速度传感器调速系统。该系统使用滑模变结构理论估计电机的反电动势,滑模切换函数采用饱和线性函数代替了传统的符号函数,既可以有效地减少滑模变结构的‘抖振’效应,又容易在微控制器中实现。SMO的输出经过低通滤波后,使用锁相环(PLL)快速计算出电机磁极位置和转速,作为系统反馈。最终算法通过STM32F103单片机实现。实验结果表明,SMO能够准确地观测出磁极的位置和转子转速,响应速度快,抖动较小,整个系统的转速调节时间小于0.2 s。该调速系统可以方便地应用于冰箱制冷系统、空调压缩机系统等低成本的永磁同步电机中。
[Abstract]:In order to further reduce the cost of PMSM speed control system and improve the reliability of the system, A speed sensorless speed control system for permanent magnet synchronous motor (PMSM) based on sliding mode observer (SMO) theory is designed, in which the sliding mode variable structure theory is used to estimate the back EMF of the motor. The sliding mode switching function uses the saturation linear function instead of the traditional symbol function, which can effectively reduce the chattering effect of sliding mode variable structure, and it is easy to realize the SMO output in the microcontroller after low-pass filtering. The pole-position and rotational speed of the motor are calculated quickly by using phase-locked loop (PLL) as system feedback. Finally, the algorithm is realized by STM32F103 single chip microcomputer. The experimental results show that the pole position and rotor speed can be accurately observed, and the response speed is fast. The speed regulation time of the whole system is less than 0.2 s. The speed regulating system can be easily applied to the low cost permanent magnet synchronous motor such as refrigerator refrigeration system air conditioning compressor system and so on.
【作者单位】：广西大学电气工程学院;
【基金】：国家自然科学基金资助项目(51177018) 广西自然科学基金资助项目(2012GXNSFBA053144)
【分类号】：TM341

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