低压永磁无刷电机控制系统关键参数计算  

Key Parameters Calculation of Low Voltage Permanent Magnet Brushless Motor Control System

作　　者：张云 王知学 谢君 李爱娟[3] ZHANG Yun;WANG Zhixue;XIE Jun;LI Aijuan(School of Rail Transportation,Shandong Jiao Tong University,Jinan 250357,China;Library,Shandong Jiao Tong University,Jinan 250357,China;College of Automotive Engineering,Shandong Jiao Tong University,Jinan 250357,China)

机构地区：[1]山东交通学院轨道交通学院,济南250357 [2]山东交通学院图书馆,济南250357 [3]山东交通学院汽车工程学院,济南250357

出　　处：《微电机》2021年第11期93-98,共6页Micromotors

基　　金：国家自然科学基金(51505258);山东省高等学校“青创科技计划”(2019KJB019)。

摘　　要：首先给出了永磁无刷直流电机控制系统硬件的基本结构;然后针对硬件系统的关键参数进行分析计算,给出了功率逆变电路的功率器件选择计算方法,提出根据负载特性选择电流容量,基于三电阻采样法设计了电流检测及保护电路,实现硬件电流滞环比较保护功能,分析了自举式功率管驱动电路的驱动电阻与自举电容的参数计算方法,给出了计算公式;最后通过实验测试验证了提出的关键硬件参数计算方法的有效性。Firstly,the basic hardware structure of the permanent magnet brushless DC motor control system was given.Then,the key parameters of the hardware system were analyzed and calculated.The power device selection method of the power inverter circuit was given,and the current capacity was selected according to the load characteristics.The current detection and protection circuit was designed based on the three resistance sampling method.The parameter calculation method of driving resistance and bootstrap capacitance of bootstrap power transistor driving circuit was analyzed,and the calculation formula was given.Finally,the validity of the proposed method was verified by experiments.

关 键 词：永磁无刷直流电机 电机控制系统 硬件参数计算 主电路电流容量 自举电路参数计算 

分 类 号：TM36[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]