基于脉冲注入法的SRM无位置传感器控制系统研究
发布时间：2018-08-20 17:14
【摘要】：开关磁阻电机(Switched Reluctance Motor,简称SRM)具有制作成本低,机械结构简单,运行时容错能力强,可靠性高等一系列优点。而电机本体的双凸极构造,磁边缘效应和磁饱和效应使得电机各相磁链和转矩都是转子位置与定子电流的强耦合非线性函数,导致了电机模型的严重非线性。因此,SRM的可靠运行依赖于对转子位置的准确判断,传统的位置传感器的使用却降低了整个开关磁阻电机系统的可靠性,同时又增加了控制系统的成本与复杂性。基于开关磁阻电机的无位置传感器控制方法已日益成为SRM控制驱动技术研究领域的一大热点。目前本文所做的研究工作主要包括如下四个方面:(1)阐述了开关磁阻电机基本工作原理,详细分析了电机数学模型,为后续无位置传感器控制方法的研究提供理论依据。.(2)开关磁阻电机无位置传感器控制方法介绍,分析了各方法的优缺点,重点进行了基于高频脉冲注入法的无位置传感器控制策略研究。针对电机启动过程中的不同状态提出了前相检测控制策略和后相检测控制策略来实现电机的无反转启动以及后续高速运转。在高频注入法的基础上实现了电机转速闭环控制。(3)在SRM理论研究的基础上,设计了开关磁阻电机无位置传感器控制系统,包括基于MOSFET的驱动电路,基于STM32的控制电路以及相关控制程序。(4)搭建了开关磁阻电机控制系统试验平台,验证了高频脉冲注入控制策略的有效性以及整个控制系统的可靠性,并测试了系统的调速性能。
[Abstract]:Switched reluctance motor (Switched Reluctance Motor,) has a series of advantages, such as low cost, simple mechanical structure, strong fault tolerance and high reliability. Because of the double salient pole structure, the magnetic edge effect and the magnetic saturation effect, the flux chain and torque of the motor are strongly coupled nonlinear functions between the rotor position and the stator current, which leads to the serious nonlinearity of the motor model. Therefore, the reliable operation of SRM depends on the accurate determination of rotor position. The traditional position sensor reduces the reliability of the switched reluctance motor system and increases the cost and complexity of the control system. The sensorless control method based on switched reluctance motor (SRM) has become a hotspot in the field of SRM control and drive technology. At present, the research work in this paper mainly includes the following four aspects: (1) the basic working principle of switched reluctance motor (SRM) is expounded, and the mathematical model of SRM is analyzed in detail. (2) introduce the sensorless control method of switched reluctance motor, and analyze the advantages and disadvantages of each method. The research of position sensorless control strategy based on high frequency pulse injection method is emphasized. Aiming at the different states of motor start-up, the forward phase detection control strategy and the rear phase detection control strategy are proposed to realize the motor starting without inversion and subsequent high speed operation. The closed-loop control of motor speed is realized on the basis of high-frequency injection method. (3) based on the research of SRM theory, the sensorless control system of switched reluctance motor is designed, including the driving circuit based on MOSFET. Based on the STM32 control circuit and related control program. (4) the experimental platform of switched reluctance motor control system is built to verify the effectiveness of the high-frequency pulse injection control strategy and the reliability of the whole control system.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM352;TP273
本文编号：2194393
[Abstract]:Switched reluctance motor (Switched Reluctance Motor,) has a series of advantages, such as low cost, simple mechanical structure, strong fault tolerance and high reliability. Because of the double salient pole structure, the magnetic edge effect and the magnetic saturation effect, the flux chain and torque of the motor are strongly coupled nonlinear functions between the rotor position and the stator current, which leads to the serious nonlinearity of the motor model. Therefore, the reliable operation of SRM depends on the accurate determination of rotor position. The traditional position sensor reduces the reliability of the switched reluctance motor system and increases the cost and complexity of the control system. The sensorless control method based on switched reluctance motor (SRM) has become a hotspot in the field of SRM control and drive technology. At present, the research work in this paper mainly includes the following four aspects: (1) the basic working principle of switched reluctance motor (SRM) is expounded, and the mathematical model of SRM is analyzed in detail. (2) introduce the sensorless control method of switched reluctance motor, and analyze the advantages and disadvantages of each method. The research of position sensorless control strategy based on high frequency pulse injection method is emphasized. Aiming at the different states of motor start-up, the forward phase detection control strategy and the rear phase detection control strategy are proposed to realize the motor starting without inversion and subsequent high speed operation. The closed-loop control of motor speed is realized on the basis of high-frequency injection method. (3) based on the research of SRM theory, the sensorless control system of switched reluctance motor is designed, including the driving circuit based on MOSFET. Based on the STM32 control circuit and related control program. (4) the experimental platform of switched reluctance motor control system is built to verify the effectiveness of the high-frequency pulse injection control strategy and the reliability of the whole control system.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM352;TP273
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