永磁无刷直流电机控制器的设计

【作者】 白世东；

【导师】 景占荣；

【作者基本信息】 西北工业大学 ， 电工理论与新技术， 2007， 硕士

【摘要】 研究“永磁无刷直流电机控制器”的设计，主要围绕控制器设计的几个关键技术——电机位置检测、起动、控制方法、功率因数校正和软硬件设计进行了深入的研究。 该论文的主要工作如下：讨论了永磁无刷直流电机的控制方案，详细分析了无传感器控制下电机转子位置检测，以反电势法为基础，设计了一种以电路实现反电势检测的新方法；提出了通过“三段式”实现的电机起动技术；在控制方法上采用基于PID方法的速度闭环控制，实现了电机的稳定运转；将PFC技术应用于驱动中，实现了功率因数的校正，降低了电磁干扰，达到了国家3C的要求；采用了新型的功率模块SPM，使系统电路更加简洁，设计使用更加方便，并给出了详细的外围电路设计方法；采用了德国infineon公司的XC164CM芯片作为控制核心，设计了一套永磁无刷直流电机无位置传感器驱动控制系统。 实验结果表明，该控制器结构简单，成本低，系统起动快速、稳定，运行可靠，具有较宽的调速范围，系统功率因数高，满足了用户的需要。更多还原

【Abstract】 The "design of Controller for permanent magnet brushless DC motor (BLDCM)" is studied on in this thesis, and the key technologies are presented,such as motor starting, rotor position detection, controlling method and power factor correction. At last, the controlling system is designed and the details is given for design of software and hardware.Controlling solution for BLDCM is discussed, the method for rotor position detection is analyzed and the circuit is designed for rotor position detection based on Back EMF. At the same time, it is studied on how to start BLDCM by "Three step" starting technique, how to adopt PID to regulate speed in closed loop to make motor run more reliably. In order to satisfy "3C" standards, the power factor corrector (PFC) is induced in system and the design parameter is given in details. The SPM (smart power module) is used to make the system design more convenient and brief. At last, use Infineon XC164CM as controlling core and the controlling system is designed.It is showed by the experiment results that the controller is better than others at these sides, such as fast starting, stabilization and wide speed regulation, and it is also cheap. The power factor is higher. So the controller would be used widely.更多还原