对转式永磁无刷直流电机控制系统研究

发布时间：2018-05-14 20:53

本文选题：对转式永磁无刷直流电机 + 有位置检测　；参考：《浙江大学》2016年硕士论文

【摘要】：永磁无刷直流电机因为具有结构简单、运行效率高、控制简单和维护方便等优点而得到了广泛应用。永磁无刷直流电机一般采用三相六状态120。导通方式,在有位置传感器控制方式下,需要位置传感器在一个周期内检测六个关键的转子位置信号以便于对三相绕组进行换相控制。在无位置传感器控制策略下,常用的有基于反电势过零点的换相控制,通过反电势提取转子位置信息。对转式永磁无刷直流电机(简称对转BLDC)是一种特殊的永磁无刷直流电机,它的电磁结构与普通永磁无刷直流电机完全相同,所不同的是它除了作为永磁体部分可以旋转以外,它的电枢部分也可以相对静止部分旋转。对转式永磁无刷直流电机在作用力与反作用力下,两个转子进行对转。在水下推进系统中,由于流体中旋转有陀螺效应,利用对转可安装对转螺旋桨维持平衡,同时增大了能量转换效率；在风力发电领域可提高对风能利用率；在新型车领域也能利用对转电机减小机械复杂性,减小电机部分体积。本文以对转式永磁无刷直流电机为主要研究对象,通过与普通永磁无刷直流电机的对比,主要研究了对转BLDC的数学模型、转速影响因素、有位置检测控制策略、无位置检测控制策略。针对基于反电势过零点的无位置检测控制策略启动困难问题,提出了一种基于电感差异的启动方法。另外,论文还在MATLAB/Simulink平台上通过仿真实验验证了能够将普通永磁无刷直流电机的控制策略推广到对转式永磁无刷直流电机,最后基于TI公司TMS320F28069芯片搭建了电机控制系统硬件平台,在该硬件平台上完成了基于霍尔位置传感器的有位置检测控制策略和基于反电势过零点的无位置检测控制策略。
[Abstract]:Permanent magnet brushless DC motor is widely used because of its simple structure, high running efficiency, simple control and easy maintenance. Permanent magnet brushless DC motor generally adopts three-phase six-state 120. Under the control mode of position sensor, the position sensor is required to detect six key rotor position signals in one cycle to control the phase commutation of the three-phase winding. In the sensorless control strategy, commutative control based on inverse EMF zero crossing point is commonly used, and rotor position information is extracted by reverse EMF. The dual rotating permanent magnet brushless DC motor (BLDC) is a kind of special permanent magnet brushless DC motor. Its electromagnetic structure is identical with that of the ordinary permanent magnet brushless DC motor. The difference is that it can be rotated except as a permanent magnet. Its armature section can also rotate relative to the stationary part. Two rotors are rotated against the rotating permanent magnet brushless DC motor under the acting force and the reaction force. In underwater propulsion system, due to gyroscopic effect in fluid rotation, counterrotating propeller can be installed to maintain balance and increase energy conversion efficiency, and wind energy utilization rate can be improved in wind power generation field. In the field of new type vehicles, it is also possible to reduce the mechanical complexity and the partial volume of the motor by using the opposite rotating motor. In this paper, the author mainly studies the mathematical model of rotating permanent magnet brushless DC motor (BLDC), the influence factors of rotating speed and the control strategy of position detection by comparing it with the ordinary permanent magnet brushless DC motor. No position detection control strategy. A starting method based on inductance difference is proposed to solve the starting difficulty of position free detection control strategy based on zero crossing point of reverse EMF. In addition, the control strategy of the ordinary permanent magnet brushless DC motor can be extended to the counterrotating permanent magnet brushless DC motor on the MATLAB/Simulink platform by simulation experiments. Finally, the hardware platform of the motor control system is built based on TI's TMS320F28069 chip. On this hardware platform, the position detection control strategy based on Hall position sensor and the position detection control strategy without position detection based on inverse EMF crossing zero point are completed.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM33

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