基于低分辨率位置传感器的电动汽车用轮毂电机的控制
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摘要
为了提高低分辨率位置传感器电机系统中的转子位置和转速估算精度,介绍了采用低分辨率霍尔位置传感器估算转子位置和转速的基本原理和方法,讨论并且比较了为提高估算精度所采取的不同策略,并结合电动汽车轮毂电机永磁体极对数较大的特点,提出了线性转子位置校正的方法以及自动边界位置补偿法,以抑制因电机霍尔位置传感器安装偏差导致的转子位置估算误差。并搭建了以TMS320F28035为核心的系统实验平台,通过与同轴连接的光电编码器信号进行比较分析,对提出的算法进行了实验研究。实验结果表明,该算法能够有效提高永磁同步轮毂电机转子位置和转速的估算精度,使系统的动态和稳态性能得到改善,并且为今后该算法在电动汽车上的应用打下了良好的基础。
In order to improve the accuracy of rotor position and speed estimated by low resolution Hall effect sensors,several different methods to obtain high resolution rotor position from the low resolution Hall sensors were described and compared with experimental test.Then a novel method to adjust rotor position gradually rather than immediately force to reference angle while sector switching and a new algorism to adjust reference angle automatically were proposed.Finally,a drive system was set with a control software coded based on TMS320F28035 as a platform to test the algorism.The experimental results indicate that the new method is capable of improving rotor speed and position with higher accuracy and lower error.And it lays a good foundation for further experiment in electric vehicle applications.
In order to improve the accuracy of rotor position and speed estimated by low resolution Hall effect sensors,several different methods to obtain high resolution rotor position from the low resolution Hall sensors were described and compared with experimental test.Then a novel method to adjust rotor position gradually rather than immediately force to reference angle while sector switching and a new algorism to adjust reference angle automatically were proposed.Finally,a drive system was set with a control software coded based on TMS320F28035 as a platform to test the algorism.The experimental results indicate that the new method is capable of improving rotor speed and position with higher accuracy and lower error.And it lays a good foundation for further experiment in electric vehicle applications.
引文
[1]葛英辉,李春生,倪光正.微型电动汽车用轮毂电机控制系统的研究[J].中小型电机,2003,30(2):34-37.
[2]邹继斌,徐永向,于成龙.正弦波无刷直流电机的新型转子位置检测方法[J].中国电机工程学报,2002,22(12):47-49.
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[6]王伊,程善美.采用低分辨率位置传感器的PMSM控制技术[J].河南科技大学学报:自然科学版,2006,27(3):11-13.
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[9]MORIMOTO S,SANADA M,TAKEDA Y.Sinusoidal Cur rent Drive System of Permanent Magnet Synchronous Motorwith Low Resolution Position Sensor[C].Industry Applica tions Conference,31st IAS Annual Meeting Sandiego[s.n.].1996:9-14.
[10]董窈窈.采用低分辨率位置传感器的正弦波永磁同步电机控制系统[D].济南:山东大学电气工程学院,2007:6-11.
[2]邹继斌,徐永向,于成龙.正弦波无刷直流电机的新型转子位置检测方法[J].中国电机工程学报,2002,22(12):47-49.
[3]王伊.永磁同步电动机转子位置检测策略的研究[D].武汉:华中科技大学控制科学与工程系,2006.
[4]许振伟.基于低分辨率传感器的PMSM伺服系统[J].电工技术学报,2004,19(10):38-41.
[5]王治国,荣军,黄海.基于简单位置传感器永磁电机矢量控制策略的研究[J].船电技术,2008,28(3):155-158.
[6]王伊,程善美.采用低分辨率位置传感器的PMSM控制技术[J].河南科技大学学报:自然科学版,2006,27(3):11-13.
[7]CAPPONI F G,DE D G,DEL F L.Brushless AC Drive Us ing An Axial Flux Synchronous Motor With Low ResolutionPosition Sensors[C]//Proceedings of IEEE 35th AnnualPower Electronics Specialist Conference Aachen:[s.n.],2004:2288-2292.
[8]CAPPONI F G,DE D G,DEL F L.AC Brushless Drivewith Low Resolution Hall-Effect Sensors For An Axial FluxPM Machine[C]//Industry Application Conference,39thIAS Annual Meeting Seattle[:s.n.],2004:2382-2389.
[9]MORIMOTO S,SANADA M,TAKEDA Y.Sinusoidal Cur rent Drive System of Permanent Magnet Synchronous Motorwith Low Resolution Position Sensor[C].Industry Applica tions Conference,31st IAS Annual Meeting Sandiego[s.n.].1996:9-14.
[10]董窈窈.采用低分辨率位置传感器的正弦波永磁同步电机控制系统[D].济南:山东大学电气工程学院,2007:6-11.