车用空调系统中无位置传感器技术的应用

作者：韩则胤，邓志奇，陈阳生* 日期：2010-06-28/span> 浏览：3801 查看PDF文档

车用空调系统中无位置传感器技术的应用
韩则胤，邓志奇，陈阳生*
（浙江大学 电气工程学院，浙江 杭州 310027）

摘要：为了适应电动汽车的发展要求，同时解决汽车现有空调驱动系统效率低的问题，研究了一种适合汽车电动空调使用的驱动系统。该系统采用无位置传感器无刷直流电机技术，并已成功应用于电动汽车、工程车辆等多个领域。在驱动器设计中，使用了一种基于反电动势过零点检测的无位置传感器控制技术，对于因启动负载过大或者负载突变引起的转子位置检测误差等问题，提出了一种附加过零点异常情况判断的过零位置修正方法。研究结果表明，该驱动系统能够很好地满足车用空调运行要求，同时过零点位置修正方法的加入对于提高电机和压缩机启动时的成功率和正常运行时的稳定性是非常有益的。
关键词：无刷直流电机;无位置传感器;电动空调压缩机
中图分类号：TH7；TM341文献标识码：A文章编号：1001-4551(2010)06-0091-05

Application of sensorless control technique for electrical
airconditioning in vehicles

HAN Zeyin, DENG Zhiqi, CHEN Yangsheng
(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract: Aiming at meeting the requirements of electric vehicles and improving the efficiency of automotive air conditioning system, a drive for electrical airconditioning compressor system was developed, based on brushless DC and sensorless control techniques. The drive has been applied in electrical vehicles successfully. The zero crosspoints of backEMF method was implemented for rotor position detect and commutation control. The noise and occasional miss of zero crosspoints are common in sensorless drive during heavy load start and load disturbance. Hence, a correction method was investigated. The results indicate that the drive can meet the requirements of automotive airconditioning and the correction method is beneficial to improve the system stability and performance in starting stage.
Key words: brushless DC motor; sensorless; electrical airconditioning compressor