车用冷却风扇的BLDC控制系统设计

Design of BLDC Control System for Vehicle Cooling Fan

目前,汽车引擎冷却风扇已由简单的继电器控制发展到了复杂的MCU及软件算法控制,与普通直流电机相比,无刷直流电机(BLDC)具有较高的功率密度、体积小及控制精度高等特征,可用于实现对冷却风扇的驱动。在研究四相双线绕组无刷直流电机机理的基础上,研制了一种车用冷却风扇的BLDC控制系统,选择合适的主控芯片XE162实现控制器对四相电机的控制。现场实验表明,该控制器性能稳定,运行可靠。

At present,the automobile engine cooling fan has developed from the simple relay control to the control of MCU and complex software algorithm.Compared with common DC motor, brushless DC motor（BLDC） has high power density,small volume and high precision control,it can be used to realize the drive of cooling fan.Based on the BLDC mechanism of four-phase bifilar winding,the BLDC control system for vehicle cooling fan is developed,the main control chip XE162 is selected to realize the four-phase motor control of controller.