直流电机可逆调速系统的仿真研究
发布时间：2018-08-29 10:48
【摘要】：在实际生产过程中,经常控制的被控对象是电动机,由电动机组成的各种控制系统,在现代电机控制中,经常采用以微处理器作为核心控制器,采用全控驱动型电力电子器件变换装置作为相应的执行机构,一般电气传动控制系统采用转速闭环控制策略,从而保持转速在一定的精度范围之内,满足生产负荷的需求。根据电气传动输入电源的不同,主要分为电流电动机传动和交流电动机传动。在要求调速性能较高的场合,一般都采用直流电气传动。在大功率可逆调速系统中,晶闸管具有天然的优越性,因此由晶闸管组成的直流电机电枢可逆调速系统在大功率、高精度等方面得到了广泛的应用。同时,由晶闸管可逆调速系统可以方便地实现直流电机的可逆运行和能量的回馈制动,在实现正转到反转和反转到正转的过程中,可实现平滑的速度转换,同时,电枢电流没有死区,保证了电枢电流的连续性。通过仿真的手段研究调速系统是常用的手段之一。通过仿真可以简化实际调速系统搭建的时间并且提高稳定性与安全性。本文应用MATLAB下的Simulink中的基本模块以及电气工具箱中的专业模块,搭建了一个仿真系。并且应用脚本命令建立了直流调速系统的数学模型,应用于计算系统参数并且与仿真无缝对接。可运用到工程当中。最后使用GUI图形用户界面对仿真与脚本进行控制,得到结果。
[Abstract]:In the actual production process, the controlled object is the motor, which is composed of various control systems. In the modern motor control, the microprocessor is often used as the core controller. The full control drive power electronic device conversion device is used as the corresponding actuator, and the general electric drive control system adopts the speed closed loop control strategy to keep the speed within a certain precision range and to meet the demand of production load. According to the electrical drive input power, mainly divided into current motor drive and AC motor drive. In the case of high speed regulation performance, DC electric drive is generally used. The thyristor has the natural superiority in the high power reversible speed regulation system, so the DC armature reversible speed regulating system composed of the thyristor has been widely used in the high power, high precision and so on. At the same time, the reversible operation and energy feedback braking of DC motor can be easily realized by the thyristor reversible speed control system, and the smooth speed conversion can be realized in the process of positive to reverse and reverse to positive turn, at the same time, The armature current has no dead zone, which ensures the continuity of armature current. It is one of the common methods to study the speed regulation system by simulation. The simulation can simplify the time of setting up the actual speed control system and improve the stability and security. In this paper, a simulation system is built by using the basic module of Simulink and the professional module of electric toolbox under MATLAB. The mathematical model of DC speed regulation system is established by script command, which is used to calculate system parameters and connect seamlessly with simulation. Can be applied to engineering. Finally, GUI graphical user interface is used to control the simulation and script, and the results are obtained.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM33
，
本文编号：2210970
[Abstract]:In the actual production process, the controlled object is the motor, which is composed of various control systems. In the modern motor control, the microprocessor is often used as the core controller. The full control drive power electronic device conversion device is used as the corresponding actuator, and the general electric drive control system adopts the speed closed loop control strategy to keep the speed within a certain precision range and to meet the demand of production load. According to the electrical drive input power, mainly divided into current motor drive and AC motor drive. In the case of high speed regulation performance, DC electric drive is generally used. The thyristor has the natural superiority in the high power reversible speed regulation system, so the DC armature reversible speed regulating system composed of the thyristor has been widely used in the high power, high precision and so on. At the same time, the reversible operation and energy feedback braking of DC motor can be easily realized by the thyristor reversible speed control system, and the smooth speed conversion can be realized in the process of positive to reverse and reverse to positive turn, at the same time, The armature current has no dead zone, which ensures the continuity of armature current. It is one of the common methods to study the speed regulation system by simulation. The simulation can simplify the time of setting up the actual speed control system and improve the stability and security. In this paper, a simulation system is built by using the basic module of Simulink and the professional module of electric toolbox under MATLAB. The mathematical model of DC speed regulation system is established by script command, which is used to calculate system parameters and connect seamlessly with simulation. Can be applied to engineering. Finally, GUI graphical user interface is used to control the simulation and script, and the results are obtained.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM33
，
本文编号：2210970
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