基于FPGA的准正弦波无刷直流电机控制及系统实现

发布时间：2018-02-07 17:43

本文关键词： 准正弦波无刷直流电机双极性PWM-ON 不连续SVPWM 电压超前角控制联合仿真　出处：《西南交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：永磁无刷直流电动机有着控制简单、调速性能好、效率高等特点,目前在伺服控制等领域已经得到了广泛的应用,无刷直流电机专用数字控制器的出现,在一定程度上解决了电机控制复杂性的问题,而且便于控制系统通过代码下载进行升级,进一步扩展了永磁无刷直流电机在控制领域的应用范围。本文研究的准正弦波无刷直流电机是指反电动势平顶宽度小于110。电角度的梯形波永磁无刷直流电机或正弦波永磁无刷直流电机,通过比较方波电流和正弦波电流在不同平顶宽度下转矩脉动的区别,可知采用正弦波电流驱动比传统的方波驱动更有利于电机转矩脉动的抑制,结合两种驱动方式,采用复合驱动的控制方式来满足电机启动速度快,运行平稳的要求,在MATLAB/Simulink软件平台上搭建了平顶宽度为100。电角度的梯形波无刷直流电机复合驱动控制系统仿真模型,对控制系统进行了仿真实验,并对仿真结果进行分析,验证了准正弦波无刷直流电机控制系统设计的正确性。线性霍尔传感器一般是用于方波驱动的换相控制,而采用锁相环倍频方法对霍尔信号进行控制,可实现满足正弦波驱动要求的高精度转子位置检测,不仅降低了控制系统的成本,而且扩展了正弦波驱动的应用范围。本文使用硬件描述语言Verilog对控制系统模块进行了功能设计,并使用Modelsim仿真软件对控制模块进行了功能仿真与验证,本文还使用MATLAB和Modelsim软件把设计的控制模块与准正弦波永磁无刷直流电机、逆变器等结合进行了联合仿真,并对仿真结果进行了对比分析,最后通过下载代码到Cylonell系列EP2C5Q208C8N芯片中,进一步验证整个设计控制模块的可行性与有效性。
[Abstract]:Permanent magnet brushless DC motor has the characteristics of simple control, good speed regulation performance, high efficiency and so on. At present, it has been widely used in servo control field, and the emergence of special digital controller for brushless DC motor. The complexity of motor control is solved to a certain extent, and the control system is easily upgraded by code download, which further expands the application range of permanent magnet brushless DC motor in control field. The quasi-sinusoidal brushless DC motor studied in this paper refers to a trapezoidal permanent magnet brushless DC motor with an electric angle or a sinusoidal permanent magnet brushless DC motor with a flat-top width less than 110. By comparing the difference between square wave current and sine wave current in different flat-top width, it can be concluded that sinusoidal current drive is more advantageous to restrain torque ripple than traditional square wave drive. The control mode of compound drive is adopted to meet the requirements of fast starting speed and stable running of motor. The simulation model of trapezoidal wave brushless DC motor compound drive control system with electric angle is built on the platform of MATLAB/Simulink software. The simulation experiment of the control system is carried out, and the simulation results are analyzed to verify the correctness of the design of the control system of the quasi-sinusoidal brushless DC motor. The linear Hall sensor is generally used for the commutation control of square wave drive. By using the phase-locked loop frequency doubling method to control the Hall signal, the high precision rotor position detection can be realized, which not only reduces the cost of the control system, but also expands the application range of the sine wave drive. In this paper, the function of the control system module is designed by using the hardware description language Verilog, and the function of the control module is simulated and verified by using the Modelsim simulation software. This paper also uses MATLAB and Modelsim software to combine the designed control module with quasi-sinusoidal permanent magnet brushless DC motor, inverter and so on. The simulation results are compared and analyzed. Finally, the code is downloaded to Cylonell series EP2C5Q208C8N chip. Further verify the feasibility and effectiveness of the whole design control module.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM33

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