基于dsPIC33EP256MC504的电动汽车空调压缩机控制器设计研究
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摘要
针对电动汽车空调制冷系统压缩机的控制需求,设计了以dsPIC33EP256MC504为核心的永磁无刷直流电机控制器,给出了其硬件设计框图,重点介绍了控制器低压电源稳压模块、电机驱动模块和运放模块等在压缩机控制应用中的电路设计内容;在电机控制策略方面,结合压缩机控制系统目标,采用矢量控制算法实现压缩机转速的控制;在程序设计方面,采用模块化的编程方式调试了压缩机控制的主程序及各个模块的子程序,并增加了CAN通信模块以实现与整车CAN网络的数据交互;最后在空调系统台架上对控制器和压缩机进行台架试验,检测在实际工况下控制器和压缩机的运转情况及空调系统的制冷情况。实验结果表明,压缩机总成正常运转,空调系统台架能够实现制冷功能,验证了设计方案的可行性。
Aiming at the control requirements of the compressor of electric vehicle air conditioning system, a permanent magnet brushless DC motor controller based on dsPIC33 EP256 MC504 is designed. The hardware design block diagram is given, and the circuit design content of the controller low voltage power supply voltage regulator module, motor drive module and op amp module in compressor control application is introduced. In the motor control strategy, combined with the compressor control system target, the vector control algorithm is used to control the compressor speed. In terms of programming, modular programming is used to debug the main program of the compressor control and subroutines of each module, and the CAN communication module is added to realize data interaction with the vehicle CAN network; Finally, the bench test of the controller and the compressor is carried out on the air-conditioning system gantry to detect the operation of the controller and the compressor and the refrigeration of the air-conditioning system under actual working conditions. The experimental results show that the compressor assembly can operate normally, and the air conditioning system gantry can realize the cooling function, which verifies the feasibility of the design scheme.
Aiming at the control requirements of the compressor of electric vehicle air conditioning system, a permanent magnet brushless DC motor controller based on dsPIC33 EP256 MC504 is designed. The hardware design block diagram is given, and the circuit design content of the controller low voltage power supply voltage regulator module, motor drive module and op amp module in compressor control application is introduced. In the motor control strategy, combined with the compressor control system target, the vector control algorithm is used to control the compressor speed. In terms of programming, modular programming is used to debug the main program of the compressor control and subroutines of each module, and the CAN communication module is added to realize data interaction with the vehicle CAN network; Finally, the bench test of the controller and the compressor is carried out on the air-conditioning system gantry to detect the operation of the controller and the compressor and the refrigeration of the air-conditioning system under actual working conditions. The experimental results show that the compressor assembly can operate normally, and the air conditioning system gantry can realize the cooling function, which verifies the feasibility of the design scheme.
引文
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[2]刘颖琦,王萌,王静宇.中国新能源汽车市场预测研究[J].经济与管理研究,2016, 37(4):86-91.
[3]李风雷,李玉欣.新能源汽车空调电动压缩机控制技术研究[J].上海电气技术,2013,6(2).
[4]张丽凤.新能源汽车空调电动压缩机控制技术研究[J].汽车实用技术, 2017.
[5] AN1078 PMSM的无传感器磁场定向控制.
[6]车级IPM-20160516_APM27 FAM65V05DF1_adv-info.
[7]李风雷.新能源车用空调压缩机控制板的CAN通信系统开发[J].上海电气技术,2012, 05(1).
[8]魏海峰,张懿,杨康,等.电动汽车空调电机无位置传感器控制的实验研究[J].汽车工程, 2016, 38(1):116-121.