无刷直流电机无位置传感器控制新方法与实现
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摘要
无刷直流电机的无位置传感器的控制通常采用反电动势法,但此方法存在滤波电路造成相位滞后、启动时反电动势检测困难、重载时换相续流的影响等问题。该文章提出一种根据非导通相端电压检测,无刷直流电机的无位置传感器直接换相方法。该方法克服了传统反电动势法存在的诸多缺陷,提高了换相的准确性,实现了无刷直流电机无位置传感器控制的直接换相。通过理论分析得出换相时非导通相端电压变化情况并进行了深入的研究。经过实验与研究,验证了该方法的可行性。
The control of brushless DC motor with no position sensor usually adopts the back-EMF method, however, this method has some problems such as filter circuit leading to phase lag, difficultly to detect the counter back-EMF at startup,the influence of the commutation freewheeling during heavy loads and so on. This paper proposed a methed of brushless DC motor with no position sensor to direct phase which based on non-conducting phase terminal voltage detection. This method overcomed many defects existing in the traditional back-EMF method, improved the accuracy of commutation and achieved brushless DC motor directly commutating without position sensor control.Through theoretical analysis, it is concluded that the voltage change of the non-conduction phase and conducted in-depth research after experiments and research, the feasibility of the method was verified.
The control of brushless DC motor with no position sensor usually adopts the back-EMF method, however, this method has some problems such as filter circuit leading to phase lag, difficultly to detect the counter back-EMF at startup,the influence of the commutation freewheeling during heavy loads and so on. This paper proposed a methed of brushless DC motor with no position sensor to direct phase which based on non-conducting phase terminal voltage detection. This method overcomed many defects existing in the traditional back-EMF method, improved the accuracy of commutation and achieved brushless DC motor directly commutating without position sensor control.Through theoretical analysis, it is concluded that the voltage change of the non-conduction phase and conducted in-depth research after experiments and research, the feasibility of the method was verified.
引文
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[2] Su G J, Mckeever J W. Low-cost Sensorless Control of Brushless DC Motors with Improved Speed Range[J]. IEEE Transactions on Power Electronics,2004,19(2):296-302.
[3] 刘栋良,崔言飞,陈镁斌.无刷直流电机反电动势估计方法[J].电工技术学报,2013,28(6):52-58.
[4] 邵建设,唐帅.基于DSP的无刷直流电机无位置传感器控制的实现[J].黄冈师范学院学报,2014,34(3):34-38.
[5] 张新荣,张理伟,刘红平,等.无刷直流电机基于线间反电动势的转子位置估计[J].长安大学学报(自然科学版),2016,36(1):105-111.
[6] 王晓远,傅涛.基于全局快速终端滑模观测器的无刷直流电机无位置传感器控制[J].电工技术学报,2017,32(11):164-172.
[7] 韩璐. 基于PIC无感无刷直流电动机控制系统研究[D].济南:山东科技大学,2017.
[8] 王新坤,杨娜. 无位置传感器无刷直流电机的换相方式研究[J]. 单片机与嵌入式系统应用,2011(6):22-24.
[9] 曹宽,万彦辉,王京锋,等. 一种改进三次谐波法的无刷直流电动机无位置传感器控制[J]. 微特电机,2013(3):40-43.
[10] 周美兰,高肇明,吴晓刚,等.五种PWM方式对直流无刷电机系统换相转矩脉动的影响[J].电机与控制学报,2013,17(7):15-21.
[2] Su G J, Mckeever J W. Low-cost Sensorless Control of Brushless DC Motors with Improved Speed Range[J]. IEEE Transactions on Power Electronics,2004,19(2):296-302.
[3] 刘栋良,崔言飞,陈镁斌.无刷直流电机反电动势估计方法[J].电工技术学报,2013,28(6):52-58.
[4] 邵建设,唐帅.基于DSP的无刷直流电机无位置传感器控制的实现[J].黄冈师范学院学报,2014,34(3):34-38.
[5] 张新荣,张理伟,刘红平,等.无刷直流电机基于线间反电动势的转子位置估计[J].长安大学学报(自然科学版),2016,36(1):105-111.
[6] 王晓远,傅涛.基于全局快速终端滑模观测器的无刷直流电机无位置传感器控制[J].电工技术学报,2017,32(11):164-172.
[7] 韩璐. 基于PIC无感无刷直流电动机控制系统研究[D].济南:山东科技大学,2017.
[8] 王新坤,杨娜. 无位置传感器无刷直流电机的换相方式研究[J]. 单片机与嵌入式系统应用,2011(6):22-24.
[9] 曹宽,万彦辉,王京锋,等. 一种改进三次谐波法的无刷直流电动机无位置传感器控制[J]. 微特电机,2013(3):40-43.
[10] 周美兰,高肇明,吴晓刚,等.五种PWM方式对直流无刷电机系统换相转矩脉动的影响[J].电机与控制学报,2013,17(7):15-21.