新型无刷电励磁直流电机控制策略研究

发布时间：2018-02-10 19:44

本文关键词： 高压断路器电机操动机构新型无刷电励磁直流电机模糊控制神经网络　出处：《沈阳工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：本世纪八十年代,随着微型计算机和互联网飞速的发展,电机的使用不仅仅局限在单纯的传递动能,而是越来越多的被用于各种复杂控制,电机根据应用的不同需要有不同的设计和控制方法。本文以高压断路器操动机构的驱动电机为研究对象,分析了高压断路器的工作特性及其电机操作机构的工作原理,提出了一种符合高压断路器工作特性的新型无刷电励磁直流电机操作机构。为了提高其操作的可靠性和可控性,在研究和分析新型无刷电励磁直流电机的结构、转矩特性的基础上,针对该新型电机无法获得精确数学解析模型的问题,提出了一种基于模糊神经网络学习的智能控制算法。(1)在研究高压断路器工作特性及其不同操作机构的特点的基础上,以高压断路器电机操作机构为研究重点,分析了40.5kV高压断路器电机操作机构的运动特性。并提出了基于新型电励磁无刷直流电机的操作机构,同时分析了该操作机构的负载特性并计算了其负载特性曲线。(2)从高压断路器电机操作机构的工作稳定性和可靠性方面出发,以新型无刷电励磁直流电机作为高压断路器操作机构的驱动电机,在对该新型电机的拓扑结构和工作原理进行分析的基础上,通过ANSYS Maxwell仿真软件对该电机进行了仿真,对该新型电机进行特性分析,并搭建了基于DSP(F28335)的实时电机控制试验平台。(3)在分析新型无刷电励磁直流电机工作原理和结构仿真的基础上,结合高压断路器操作机构的负载特性,通过分析该新型电机的控制特点,使用ANSYS Maxwell软件对该电机的静态转矩进行了采样,在此基础上进一步对该新型电机相应的控制策略展开研究。(4)在上述研究的基础上,针对该新型电机求解精确数学解析模型难度较大的问题,提出了一种新的无模型控制方法,该方法结合神经网络和模糊控制的特点对新型电机的转矩特性曲线进行了离线学习,获得了转矩逆函数。并在转矩逆函数的基础上,提出了一种新的转矩分配函数,在获得转矩分配函数和转矩逆函数之后,实现了对该新型电机的实时控制,并通过仿真数据进行了验证。
[Abstract]:In 80s, with the rapid development of microcomputers and the Internet, the use of motors was not confined to the mere transfer of kinetic energy, but more and more used in complex control. The motor has different design and control methods according to the different needs of application. This paper takes the driving motor of the operating mechanism of high voltage circuit breaker as the research object, analyzes the working characteristics of the high voltage circuit breaker and the working principle of the motor operating mechanism. In this paper, a new brushless excitation DC motor operating mechanism is proposed. In order to improve the reliability and controllability of the brushless excitation DC motor, the structure of the new brushless excitation DC motor is studied and analyzed. On the basis of torque characteristics, the new motor can not obtain accurate mathematical analytical model. This paper presents an intelligent control algorithm based on fuzzy neural network learning. On the basis of studying the characteristics of high voltage circuit breakers and their different operating mechanisms, this paper focuses on the motor operating mechanism of high voltage circuit breakers. The motion characteristics of the motor operating mechanism of 40.5 kV high voltage circuit breaker are analyzed, and the operating mechanism based on a new type of electric excitation brushless DC motor is proposed. At the same time, the load characteristic of the operating mechanism is analyzed and its load characteristic curve is calculated. (2) from the aspect of the working stability and reliability of the motor operating mechanism of the high voltage circuit breaker, The new brushless excitation DC motor is used as the driving motor of the high voltage circuit breaker. Based on the analysis of the topology and working principle of the new motor, the simulation of the motor is carried out by ANSYS Maxwell software. The characteristic of the new motor is analyzed, and the real time motor control test platform based on DSPF28335) is built. On the basis of analyzing the working principle and structure simulation of the new brushless excitation DC motor, combined with the load characteristics of the operating mechanism of the high voltage circuit breaker, By analyzing the control characteristics of the new motor, the static torque of the motor is sampled by using ANSYS Maxwell software. On this basis, the corresponding control strategy of the new motor is further studied. In view of the difficulty of solving the exact mathematical analytical model of the new motor, a new model-free control method is proposed, which combines the characteristics of neural network and fuzzy control to study the torque characteristic curve of the new motor off-line. The torque inverse function is obtained. Based on the torque inverse function, a new torque distribution function is proposed. After obtaining the torque distribution function and the torque inverse function, the real-time control of the new motor is realized. It is verified by simulation data.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM33

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