BM6201FS在无叶风扇控制系统中的应用设计

Design of Bladeless Fan Control System Based on BM6201FS

摘要:

针对当前无叶风扇控制器存在成本高、稳定性差等问题,设计了一种低成本高稳定性的无叶风扇控制器;以 R5F104A单片机为控制核心,无位置传感器的三相无刷直流电机为控制对象,采用高耐压快速大功率MOS集成电路BM6201FS为电机功率驱动电路,降低无叶风扇电路系统成本,采用反电动势过零点检测法确定电机转子的位置信息,软件补偿硬件滤波电路产生的电机换相相移,提高控制器的可靠性；实验结果表明控制器工作稳定可靠,性价比高。

Abstract:

A low-cost and high-stability bladeless fan controller was designed to solve the problems that current bladeless fan controller was high cost and poor stability. The R5F104A microcontroller was used as controller core, and the three-phase BLDC motor without position sensor was used as control object. In order to reduce the cost of bladeless fan circuit system, High-voltage power PrestoMOS BM6201FS was used as motor drive IC. To improve the reliability of the controller, motor rotor position information was determined by detecting back-EMF zero, and motor commutation phase shift that is caused by hardware filtering circuit was compensated by software. The experimental results show that the controller is stable, reliable and cost-effective. 